Ford Explorer: Modular Communication Network / Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).

Diagnostic Trouble Code Chart

Module	Trouble Code	Description	Action
GWM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AW
GWM	U3000:44	Control Module: Data Memory Failure	GO TO Pinpoint Test AV
GWM	U3000:45	Control module: software memory failure	GO TO Pinpoint Test AV
GWM	U3000:46	Control module: calibration / parameter memory failure	GO TO Pinpoint Test AV
GWM	U3000:47	Control Module: Watchdog/Safety µC Failure	GO TO Pinpoint Test AV
GWM	U3000:49	Control Module: Internal Electronic Failure	GO TO Pinpoint Test AV

Symptom Chart

Symptom Chart: Communication Network

Symptom Chart

Condition	Possible Sources	Action
Vehicle does not start with the diagnostic scan tool connected to the remote DLC, and/or multiple warning indicators illuminate only when the diagnostic scan tool is connected to the remote DLC.	Refer to Pinpoint Test	GO to Pinpoint Test AU
No HS-CAN1 communication, all modules do not respond	Refer to Pinpoint Test	GO to Pinpoint Test Access Point
No HS-CAN2 communication, all modules do not respond	Refer to Pinpoint Test	GO TO Pinpoint Test AQ
No HS-CAN3 communication, all modules do not respond	Refer to Pinpoint Test	GO TO Pinpoint Test AR
No HS-CAN4 communication, all modules do not respond	Refer to Pinpoint Test	GO TO Pinpoint Test AS
No MS-CAN communication, all modules do not respond	Refer to Pinpoint Test	GO to Pinpoint Test AT
PCM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test A
SOBDMC (HEV/PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test B
ABS module does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test C
RCM module does not respond to the diagnostic scan tool.	Refer to Pinpoint Test	GO to Pinpoint Test D
OCSM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test E
SCCM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test F
GSM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test G
All-wheel drive module does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test H
IPC does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test I
BCM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test J
BCMC [BJB] does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test K
PACM (HEV/PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test L
PAM does not respond to the diagnostic scan tool (rear parking aid camera only)	Refer to Pinpoint Test	GO to Pinpoint Test M
HVAC module does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test N
ACCM (HEV/PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test O
RHVAC module does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test P
ACM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test Q
HCM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test R
IPMA does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test S
IPMB does not respond to the diagnostic scan tool (360-degree view camera)	Refer to Pinpoint Test	GO TO Pinpoint Test T
APIM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test U
DSP does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test V
WACM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test W
TCU does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test X
RTM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test Y
PSCM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test Z
DSM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test AA
SCME does not respond to the diagnostic scan tool (integrated into DSM)	Refer to Pinpoint Test	GO TO Pinpoint Test AA
DDM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AB
PDM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AC
SODL does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test advertisement
SODR does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test AE
SCMG does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test AF
SCMH does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AG
SCMJ does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AH
RGTM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test AI
TRM does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO TO Pinpoint Test AJ
ATCM Does Not Respond to Diagnostic Scan Tool	Refer to Pinpoint Test	GO to Pinpoint Test AK
BECM (HEV/PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AL
SOBDM (Battery Charging Control Module [BCCM]) (PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AM
DCDC (HEV/PHEV) does not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AN
All networks do not respond to the diagnostic scan tool	Refer to Pinpoint Test	GO to Pinpoint Test AO
No power at remote DLC	Refer to Pinpoint Test	GO to Pinpoint Test AU

Pinpoint Tests

PINPOINT TEST A: PCM (POWERTRAIN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

For circuit and connector information, refer to Wiring Diagrams Cell 14. For circuit and connector information, refer to Wiring Diagrams Cell 23.

Normal Operation and Fault Symptoms

PCM communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PCM

A1 CHECK IF OTHER HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) MODULES PASS NETWORK TEST

Using a scan tool, perform the network test.

Does the text "pass" or a DTC appear next to any of the following modules (if equipped): ACCM, APIM, AWD module, BCMC [BJB], BCM, BECM, DCDC, PACM, SOBDM (Battery Charge Control Module [BCCM]), SOBDMC or PCM?

Yes

If a "pass" or DTC is indicated next to the PCM, there is no current network fault.
If a "pass" or DTC is indicated next to one or more modules other than the PCM, GO to A2.

No	None of the modules are currently communicating on HS-CAN1. GO to Pinpoint Test access point

A2 PC/ED (POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS) MANUAL PINPOINT TEST QUALITY CHECK VERIFICATION

Make sure the PC/ED manual quality check was completed.

Was the PC/ED manual quality check pinpoint test completed?

Yes

GO to A3

No	Refer to the PC/ED Pinpoint Test Quality Check manual.

A3 CHECK HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) TERMINATING RESISTANCE

Ignition OFF.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 C2431-19

Is the resistance between 108 and 132 ohms?

Yes

CONNECT the GWM. GO to A5

GO to A4

A4 CHECK HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN PCM (POWERTRAIN CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect PCM C1381B (2.3 L EcoBoost), C1551B (3 L EcoBoost) or C175B (3.3 L Duratec).

Action:
Click to display the connectors
2.3 L EcoBoost

Positive lead Measurement/Action Negative lead

C1381B-67 C2431-20

C1381B-66 C2431-19

Click to display the connectors
3 L EcoBoost

Positive lead Measurement/Action Negative lead

C1551B-27 C2431-20

C1551B-12 C2431-19

Click to display the connectors
3.3 L Duratec

Positive lead Measurement/Action Negative lead

C175B-27 C2431-20

C175B-12 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to A5

No	REPAIR the faulty circuit.

A5 CHECK PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the PCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided routine (PCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST B: SOBDMC (SECONDARY ONBOARD DIAGNOSTIC MONITORING CONTROL C) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagrams Cell 14. For circuit and connector information, refer to Wiring Diagrams Cell 21.

Normal Operation and Fault Symptoms

The SOBDMC communicates on the HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SOBDMC

Visual Inspection and Pre-checks

Make sure BCMC [BJB] fuses 5 (5 A) and 24 (10 A) are OK.

WARNING: To avoid the risk of electrical shock, always strictly observe all warnings and service instructions, including instructions to de-energize the system. The high-voltage system operates at approximately 300 volts DC, supplied through high-voltage cables to its components and modules. High-voltage cables and wiring are identified by orange wire harness tape or orange wire insulation. All high-voltage components are marked with high-voltage warning labels bearing the high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.

B1 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: SOBDMC C1458A

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1458A-M1 Ground

C1458A-K2 Ground

Is the voltage greater than 11 volts?

Yes

GO to B2

No	CHECK BCMC [BJB] fuse 5 (5A) or 24 (10A) is OK. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

B2 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) POWER RELAY VOLTAGE SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Connect a fused jumper wire:
Click to display connectors

Positive lead Measurement/Action Negative lead

C1458A-K3 Ground

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1458A-L2 Ground

C1458A-M2 Ground

Is the voltage greater than 11 volts?

Yes

REMOVE the fusible link. GO to B3

No	REMOVE the fusible link. CHECK that BCMC [BJB] fuse 95 (15A) is OK. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit. CHECK the SOBDMC power relay. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

B3 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) WAKE-UP CIRCUIT FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1458A-K1 Ground

Is the voltage greater than 11 volts?

Yes

GO to B4

No	DIAGNOSE the SOBDMC wake-up concern in the BCM. REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

B4 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1458A-L4 Ground

C1458A-M4 Ground

Is the resistance less than 3 ohms?

Yes

GO to B5

No	REPAIR the faulty circuit.

B5 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1458A-F1 C2431-20

C1458A-G1 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to B6

No	REPAIR the faulty circuit.

B6 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL MODULE C) OPERATION

Ignition OFF.

Disconnect and inspect the SOBDMC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SOBDMC connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST C: ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagrams Cell 14. For circuit and connector information, refer to Wiring Diagrams Cell 42.

Normal Operation and Fault Symptoms

The ABS module communicates on the HS-CAN2 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
ABS Module

Visual Inspection and Pre-checks

Make sure BCMC [BJB] fuses 23 (10 A), 28 (40 A) and 29 (60 A) are OK.

C1 CHECK ABS (ANTI-LOCK BRAKE SYSTEM) MODULE POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: ABS module C135A and C135B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C135B-1 Ground

Click to display connectors

Positive lead Measurement/Action Negative lead

C135A-14 Ground

C135A-41 Ground

Is the voltage greater than 11 volts?

Yes

GO to C2

No	CHECK BCMC [BJB] fuses 23 (10A), 28 (40A) and 29 (60A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

C2 CHECK ABS (ANTI-LOCK BRAKE SYSTEM) MODULE GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C135A-1 Ground

Click to display connectors

Positive lead Measurement/Action Negative lead

C135B-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to C3

No	REPAIR the faulty circuit.

C3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN ABS (ANTI-LOCK BRAKE SYSTEM) MODULE AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C135A-33 C2431-18

C135A-32 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to C4

No	REPAIR the faulty circuit.

C4 CHECK ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all ABS module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the ABS module connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the Managed Routine (ABS).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST D: RCM (RESTRAINTS CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagrams Cell 14. For circuit and connector information, refer to Wiring Diagrams Cell 46.

Normal Operation and Fault Symptoms

RCM communicates on the HS-CAN2 bus.

Possible Sources

Wiring, Terminals and Connectors
BCM
RCM

WARNING: Never probe the electrical connectors on the air bag, Canopy® or side curtain air bag assemblies. Failure to follow this instruction may result in accidental deployment of these assemblies, increasing the risk of serious injury or death.

WARNING: Never disassemble or modify the seat belt pretensioner, load limiter or inflator components. Never probe the electrical connectors of the retractor pretensioner. Tampering or back probing may cause accidental deployment and result in injury or death.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and functioning correctly before the vehicle is returned to the customer.

D1 CHECK THE RCM (RESTRAINTS CONTROL MODULE) COMMUNICATION

Ignition OFF.

De-power the SRS.
REFER TO: Supplemental Restraint System (SRS) Disarming and Arming (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RCM C310A and C310B.

Are the RCM C310A pin 19 and C310B pins 47 and 48 OK?

Yes

GO to D2

No	INSTALL a new wiring harness. Supplemental Restraint System (SRS) Upgrade. REFER TO: Supplemental Restraint System (SRS) Reconfiguration (501-20B Supplemental Restraint System, General Procedures).

D2 CHECK THE BCM (BODY CONTROL MODULE) NETWORK CONNECTION

The ignition is on.

Using a scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to D3

No	CHECK for a module communication concern. GO to Pinpoint Test J.

D3 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS)

Using a scan tool, perform the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

CHECK the Diagnostic Trouble Codes (DTCs).
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to D4

D4 CHECK THE RCM (RESTRAINTS CONTROL MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Reconfigure the SRS.
REFER TO: Supplemental Restraint System (SRS) Reconfiguration (501-20B Supplemental Restraint System, General Procedures).

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C310A-19 Ground

Is the voltage greater than 11 volts?

Yes

GO to D5

No	REPAIR the faulty circuit.

D5 CHECK THE RCM (RESTRAINTS CONTROL MODULE) HOUSING GROUND

Ignition OFF.

Measure the resistance between the RCM housing and a good vehicle chassis ground.

Is the resistance less than 3 ohms?

Yes

GO to D6

No	REPAIR the RCM ground circuit, if necessary.

D6 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE RCM (RESTRAINTS CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

De-power the SRS.
REFER TO: Supplemental Restraint System (SRS) Disarming and Arming (501-20B Supplemental Restraint System, General Procedures).

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C310B-48 C2431-18

C310B-47 C2431-17

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to D7.

No	REPAIR the faulty circuit.

D7 CHECK THE RCM (RESTRAINTS CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RCM and related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM and related inline connectors. Make sure they are fully seated and locked.

Supplemental Restraint System (SRS) Upgrade.
REFER TO: Supplemental Restraint System (SRS) Reconfiguration (501-20B Supplemental Restraint System, General Procedures).

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the Guided Routine (RCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST E: OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagrams Cell 14. For circuit and connector information, refer to Wiring Diagrams Cell 46.

Normal Operation and Fault Symptoms

The OCSM communicates on the HS-CAN2.

Possible Sources

Wiring, Terminals and Connectors
BCM
OCSM

E1 CHECK THE BCM (BODY CONTROL MODULE) NETWORK CONNECTION

The ignition is on.

Using a scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to E2

No	CHECK for a module communication concern. GO to Pinpoint Test J.

E2 RETRIEVE STORED DIAGNOSTIC TROUBLE CODES (DTCS)

Using a scan tool, perform the BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

CHECK the Diagnostic Trouble Codes (DTCs).
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to E3

E3 CHECK THE OCSM (OCCUPANT CLASSIFICATION SENSING MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Wait one minute.

Disconnect: OCSM C3285.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3285-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to E4

No	REPAIR the circuit.

E4 CHECK THE OCSM (OCCUPANT CLASSIFICATION SENSING MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3285-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to E5

No	REPAIR the circuit.

E5 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE OCSM (OCCUPANT CLASSIFICATION SENSING MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3285-2 C2431-18

C3285-3 C2431-17

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to E6.

No	REPAIR the faulty circuit.

E6 CHECK THE OCSM (OCCUPANT CLASSIFICATION SENSING MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the OCSM connector and the associated inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCSM connector and the associated inline connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new OCSM. If equipped with multi-contour seats,
REFER TO: Occupant Classification Sensing (OCS) Sensor - Vehicles With: Multi-Contour Seats (501-20B Supplemental Restraint System, Removal and Installation).
If not equipped with multi-contour seats, REFER TO: Occupant Classification Sensing (OCS) Sensor - Vehicles Without: Multi-Contour Seats (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST F: SCCM (STEERING COLUMN CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematic and connector information, refer to Wiring Diagrams Cell 14. For schematic and connector information, refer to Wiring Diagrams Cell 31.

Normal Operation and Fault Symptoms

The SCCM communicates on the HS-CAN2.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SCCM

Visual Inspection and Pre-checks

Make sure the BCM fuse 13 (7.5A) is serviceable.

F1 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the remote DLC.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 C2431-17

Is the resistance between 108 and 132 ohms?

Yes

RECONNECT the GWM. GO to F3.

GO to F2

F2 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: SCCM C226A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C226A-5 C2431-18

C226A-6 C2431-17

Is the resistance less than 3 ohms?

Yes

RECONNECT all disconnected connectors. GO to F5.

No	REPAIR the faulty circuit.

F3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Connect the battery negative cable.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C226A-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to F4

No	CONFIRM the BCM fuse 13 (7.5A) is serviceable. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams Cell Index to determine possible causes of the short circuit.

F4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C226A-8 Ground

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to F5.

No	REPAIR the circuit.

F5 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connector. Make sure it is fully seated and clicked into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST G: GSM (GEAR SHIFT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematic and connector information, refer to Wiring Diagrams Cell 14. For schematic and connector information, refer to Wiring Diagrams Cell 30.

Normal Operation and Fault Symptoms

The GSM communicates on the HS-CAN2.

Possible Sources

Fuse
Wiring, Terminals and Connectors
GSM

Visual Inspection and Pre-checks

Make sure the BCM fuse 12 (7.5A) is serviceable.

G1 CHECK THE GSM (GEAR SHIFT MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: GSM C3590.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3590-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to G2

No	CONFIRM the BCM fuse 12 (7.5A) is serviceable. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams Cell Index to determine possible causes of the short circuit.

G2 CHECK THE GSM (GEAR SHIFT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3590-9 Ground

C3590-18 Ground

Is the resistance less than 3 ohms?

Yes

GO to G3

No	REPAIR the faulty circuit.

G3 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE GSM (GEAR SHIFT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3590-3 C2431-18

C3590-2 C2431-17

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to G4.

No	REPAIR the faulty circuit.

G4 CHECK THE GSM (GEAR SHIFT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GSM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GSM connector. Make sure it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article exists for this condition, INSTALL a new GSM.
Refer to: Gear Shift Module (GSM) (307-05A Automatic Transmission External Controls - 10-Speed Automatic Transmission - 10R60, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST H: AWD (ALL-WHEEL DRIVE) MODULE DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematic and connector information, refer to Wiring Diagrams Cell 14. For schematic and connector information, refer to Wiring Diagrams Cell 34.

Normal Operation and Fault Symptoms

The Four-Wheel Drive module communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
AWD Module

Visual Inspection and Pre-checks

Make sure the BCMC [BJB] fuse 64 (40A) is serviceable.

H1 CHECK THE FULL TIME POWER DRIVE (FTPD) MODULE POWER SUPPLY CIRCUIT FOR AN OPEN

Disconnect the Four-Wheel Drive Module C3841.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3841-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to H2

No	CHECK the BCMC [BJB] fuse 64 (40A) is serviceable. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams Cell Index to determine possible causes of the short circuit.

H2 CHECK THE FULL TIME POWER DRIVE (FTPD) MODULE HOUSING GROUND

Ignition OFF.

Measure the resistance between the AWD module housing and a good vehicle ground.

Is the resistance less than 3 ohms?

Yes

GO to H3

No	REPAIR the AWD module housing ground, if necessary.

H3 CHECK THE HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE FULL TIME POWER DRIVE (FTPD) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3841-9 C2431-20

C3841-8 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to H4.

No	REPAIR the faulty circuit.

H4 CHECK THE FULL TIME POWER DRIVE (FTPD) MODULE FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the AWD module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the AWD module connector. Make sure it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin procedure. If no service bulletins apply, INSTALL a new four-wheel drive module.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST I: IPC (INSTRUMENT PANEL CLUSTER) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 14. For schematics and connector information, refer to Wiring Diagrams Section, Cell 60.

Normal Operation and Fault Symptoms

The IPC communicates on HS-CAN3.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PCM

Visual Inspection and Pre-checks

Make sure the BCM fuse 13 (7.5A) is serviceable.

I1 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the remote DLC.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 C2431-15

Is the resistance between 108 and 132 ohms?

Yes

CONNECT the GWM. GO to I3.

GO to I2.

I2 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN IPC (INSTRUMENT PANEL CLUSTER) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: MPK C220.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C220-12 C2431-16

C220-13 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to I5.

No	REPAIR the faulty circuit.

I3 CHECK IPC (INSTRUMENT PANEL CLUSTER) VOLTAGE SUPPLY CIRCUIT

Disconnect: MPK C220.

Connect the battery negative cable.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C220-8 Ground

Is the voltage greater than 11 volts?

Yes

GO to I4

No	CONFIRM the BCM fuse 13 (7.5A) is serviceable. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams Cell Index to determine possible causes of the short circuit.

I4 CHECK IPC (INSTRUMENT PANEL CLUSTER) GROUND CIRCUIT

Ignition OFF.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C220-3 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to I5.

No	REPAIR the circuit.

I5 CHECK IPC (INSTRUMENT PANEL CLUSTER) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (IPC).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST J: BCM (BODY CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 13. For schematics and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

The BCM communicates on HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
BCM

Visual Inspection and Pre-checks

Verify that BCMC [BJB] fuse 43 (60 A) is in good condition.

J1 CHECK BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: BCM C2280H.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280H-1 Ground

Is the voltage greater than 11 volts?

Yes

CONNECT the BCM C2280H. GO to J2.

No	CHECK BCMC [BJB] fuse 43 (60 A) is in good condition. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

J2 CHECK BCM (BODY CONTROL MODULE) GROUND CIRCUITS FOR OPEN

Ignition OFF.

Disconnect: BCM C2280C.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280C-6 Ground

C2280C-7 Ground

C2280C-10 Ground

Is the resistance less than 3 ohms?

Yes

GO to J3

No	REPAIR the faulty circuit.

J3 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN BCM (BODY CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: BCM C2280G.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280G-10 C2431-20

C2280G-9 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to J4.

No	REPAIR the faulty circuit.

J4 CHECK THE BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (BCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST K: BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 13. For schematics and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

The BCMC [BJB] communicates on HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
BCMC [BJB]

Visual Inspection and Pre-checks

Verify that high-current BJB MEGA fuse 203 (275 A) is in good condition.

K1 CHECK BCMC (BODY CONTROL MODULE C) [BJB (BATTERY JUNCTION BOX)] VOLTAGE SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: BCMC [BJB] C1035D.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035D-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to K2

No	CHECK high-current BJB MEGA fuse 203 (275 A) is in good condition. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

K2 CHECK BCMC (BODY CONTROL MODULE C) [BJB (BATTERY JUNCTION BOX)] GROUND CIRCUITS FOR OPEN

Ignition OFF.

Disconnect: BCMC [BJB] C1035A and C1035B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035A-18 Ground

C1035B-31 Ground

Is the resistance less than 3 ohms?

Yes

GO to K3

No	REPAIR the faulty circuit.

K3 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN BCMC (BODY CONTROL MODULE C) [BJB (BATTERY JUNCTION BOX)] AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035B-12 C2431-20

C1035B-11 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to K4.

No	REPAIR the faulty circuit.

K4 CHECK FOR PROPER OPERATION OF BCMC (BODY CONTROL MODULE C) [BJB (BATTERY JUNCTION BOX)]

Disconnect and inspect all BCMC [BJB] connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCMC [BJB] connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST L: PACM (PEDESTRIAN ALERT CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 13. For schematics and connector information, refer to Wiring Diagrams Cell 66.

Normal Operation and Fault Symptoms

The PACM communicates on HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PAKM

Visual Inspection and Pre-checks

Verify that BCM fuse 22 (5 A) is in good condition.

L1 CHECK PACM (PEDESTRIAN ALERT CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: PACM C4525.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4525-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to L2

No	VERIFY BCM fuse 22 (5 A) is in good condition. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

L2 CHECK PACM (PEDESTRIAN ALERT CONTROL MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4525-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to L3

No	REPAIR the circuit.

L3 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN PACM (PEDESTRIAN ALERT CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4525-2 C2431-20

C4525-3 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to L4.

No	REPAIR the faulty circuit.

L4 CHECK FOR PROPER OPERATION OF PACM (PEDESTRIAN ALERT CONTROL MODULE)

Disconnect and inspect the PACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PACM connector. Make sure it is fully seated and clicks into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins exist, INSTALL a new PACM.
REFER TO: Pedestrian Alert Control Module (PACM) (413-22 Pedestrian Alert System, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST M: PAM (PARK ASSIST MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 14. For schematics and connector information, refer to Wiring Diagrams Cell 145.

Normal Operation and Fault Symptoms

The PAM communicates on HS-CAN2.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PAM

Visual Inspection and Pre-checks

Verify that BCM fuse 36 (15 A) is in good condition.

M1 CHECK PAM (PARK ASSIST MODULE) VOLTAGE SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: PAM C3267A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3267A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to M2

No	VERIFY BCM fuse 36 (15 A) is in good condition. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

M2 CHECK PAM (PARK ASSIST MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3267A-20 Ground

Is the resistance less than 3 ohms?

Yes

GO to M3

No	REPAIR the circuit.

M3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN PAM (PARK ASSIST MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3267A-9 C2431-18

C3267A-8 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to M4.

No	REPAIR the faulty circuit.

M4 CHECK FOR PROPER OPERATION OF PAM (PARK ASSIST MODULE)

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST N: HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 14. For schematics and connector information, refer to Wiring Diagrams Section, Cell 55.

Normal Operation and Fault Symptoms

The HVAC module communicates on the MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
HVAC Module

Visual Inspection and Pre-checks

Make sure the BCM fuse 12 (7.5A) is serviceable.

N1 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the remote DLC.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 C2431-22

Is the resistance between 108 and 132 ohms?

Yes

CONNECT the GWM. GO to N3.

GO to N2

N2 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the HVAC module C228A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C228A-17 C2431-23

C228A-18 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to N5.

No	REPAIR the faulty circuit.

N3 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE VOLTAGE SUPPLY CIRCUIT FOR OPEN

Connect the battery negative cable.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C228A-26 Ground

Is the voltage greater than 11 volts?

Yes

GO to N4

No	CONFIRM the BCM fuse 12 (7.5A) is serviceable. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams Cell Index to determine possible causes of the short circuit.

N4 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C228A-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to N5

No	REPAIR the circuit.

N5 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION

Ignition OFF.

Disconnect and inspect all HVAC module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the HVAC module connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins exist, INSTALL a new HVAC module.
REFER TO: Heating, Ventilation and Air Conditioning (HVAC) Module (412-00 Climate Control System - General Information, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST O: ACCM (AIR CONDITIONING CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 14. For schematics and connector information, refer to Wiring Diagrams Section, Cell 55.

Normal Operation and Fault Symptoms

The ACCM communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
ACCM

Visual Inspection and Pre-checks

Check that fuse BCMC [BJB] 8 (20A) (HEV) or 14 (15A) (PHEV) is good.

O1 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) POWER SUPPLY CIRCUITS FOR OPEN

Ignition OFF.

Disconnect: ACCM C1803A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1803A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to O2

No	CHECK fuse BCMC [BJB] 8 (20A) (HEV) or 14 (15A) (PHEV) for good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Cell to identify possible causes of the short.

O2 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1803A-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to O3

No	REPAIR the circuit.

O3 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN ACCM (AIR CONDITIONING CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1803A-2 C2431-20

C1803A-3 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to O4

No	REPAIR the faulty circuit.

O4 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all ACCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new ACCM. For vehicles with 3.0L EcoBoost — Hybrid engine,
REFER to: Air Conditioning (A/C) Compressor — 3.3 L Duratec-V6 (412-00 Climate Control System — General Information, Removal and Installation).
For vehicles with 3.3L Duratec-V6 — Hybrid engine, REFER to: Air Conditioning (A/C) Compressor — 3.3L Duratec-V6 — Hybrid (BP) (412-00 Climate Control System — General Information, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST P: RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. Refer to Wiring Diagrams, Cell 119, for connector and circuit information. For wiring diagrams and connector information, refer to Wiring Diagrams Cell 131.

Normal Operation and Fault Symptoms

The RHVAC module communicates on the MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
HVAC Module

Visual Inspection and Pre-checks

Verify that BCM fuse 9 (5A) is in good condition.

P1 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: RHVAC Module C3198.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3198-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to P2

No	CONFIRM that BCM fuse 9 (5A) is in good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine possible causes of the short.

P2 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3198-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to P3

No	REPAIR the circuit.

P3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3198-1 C2431-23

C3198-2 C2431-22

Action:

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to P4

No	REPAIR the faulty circuit.

P4 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the RHVAC module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RHVAC module connector. Make sure it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST Q: ACM (FRONT AUDIO CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. Refer to Wiring Diagrams Cell 130. Refer to Wiring Diagrams Cell 131.

Normal Operation and Fault Symptoms

The ACM communicates on the HS-CAN3 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
ACM

Visual Inspection and Pre-checks

Check that BCM fuse 32 (20A) is good.

Q1 CHECK THE ACM (FRONT AUDIO CONTROL MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: ACM C4240A (with SYNC) or C240A (without SYNC).

The ignition is on.

Action:
Click to display the connectors
with SYNC

Positive lead Measurement/Action Negative lead

C4240A-1 Ground

Click to display the connectors
Without SYNC

Positive lead Measurement/Action Negative lead

C240A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to Q2

No	CHECK BCM fuse 32 (20A) for good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Cell to identify possible causes of the short.

Q2 CHECK THE ACM (FRONT AUDIO CONTROL MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors
with SYNC

Positive lead Measurement/Action Negative lead

C4240A-4 Ground

Click to display the connectors
Without SYNC

Positive lead Measurement/Action Negative lead

C240A-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to Q3

No	REPAIR the circuit.

Q3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE ACM (FRONT AUDIO CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors
with SYNC

Positive lead Measurement/Action Negative lead

C4240A-19 C2431-16

C4240A-30 C2431-15

Click to display the connectors
Without SYNC

Positive lead Measurement/Action Negative lead

C240A-19 C2431-16

C240A-30 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to Q4

No	REPAIR the faulty circuit.

Q4 CHECK THE ACM (FRONT AUDIO CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the ACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the ACM connector. Make sure that it is installed correctly and clicks into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new ACM. With SYNC
REFER to: Audio Control Module (ACM) (415-00B Information and Entertainment System — General Information — Vehicles With: SYNC 3, Removal and Installation).
Without SYNC, REFER to: Audio Control Module (ACM) (415-00A Information and Entertainment System — General Information — Vehicles Without SYNC 3, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST R: HCM (HEADLAMP CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. Refer to Wiring Diagrams, Cell 85, for connector and circuit information.

Normal Operation and Fault Symptoms

The HCM communicates on the HS-CAN2 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
HS-CAN

Visual Inspection and Pre-checks

Check that BCM fuse 17 (7.5A) is good.

R1 CHECK HCM (HEADLAMP CONTROL MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: HCM C2129.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2129-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to R2

No	CHECK BCM fuse 17 (7.5A) for good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Cell to identify possible causes of the short.

R2 CHECK HCM (HEADLAMP CONTROL MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2129-13 Ground

Is the resistance less than 3 ohms?

Yes

GO to R3

No	REPAIR the circuit.

R3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN HCM (HEADLAMP CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2129-2 C2431-18

C2129-3 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to R4

No	REPAIR the faulty circuit.

R4 CHECK HCM (HEADLAMP CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the HCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HCM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST S: IPMA (IMAGE PROCESSING MODULE A) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. Refer to Wiring Diagrams Cell 31. Refer to Wiring Diagrams Cell 146.

Normal Operation and Fault Symptoms

The IPMA communicates on the HS-CAN2 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
IPMA

Visual Inspection and Pre-checks

Verify that BCM fuse 36 (15 A) is in good condition.

S1 CHECK IPMA (IMAGE PROCESSING MODULE A) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: IPMA C9039.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C9039-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to S2

No	CHECK BCM fuse 36 (15A) for good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Cell to identify possible causes of the short.

S2 CHECK IPMA (IMAGE PROCESSING MODULE A) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C9039-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to S3

No	REPAIR the circuit.

S3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN IPMA (IMAGE PROCESSING MODULE A) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C9039-10 C2431-18

C9039-9 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to S4

No	REPAIR the faulty circuit.

S4 CHECK IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the IPMA connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMA connector. Make sure it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new IPMA.
REFER TO: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST T: IPMB (IMAGE PROCESSING MODULE B) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematics and connector information, refer to Wiring Diagrams Cell 14. For schematics and connector information, refer to Wiring Diagrams Cell 145.

Normal Operation and Fault Symptoms

The IPMB communicates via HS-CAN2.

Possible Sources

Fuse
Wiring, Terminals and Connectors
IPMB

Visual Inspection and Pre-checks

Check the BCMC [BJB] fuse 25 (10 A) for continuity.

T1 CHECK IPMB (IMAGE PROCESSING MODULE B) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: IPMB C3676B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3676B-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to T2

No	CHECK BCMC [BJB] fuse 25 (10 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

T2 CHECK IPMB (IMAGE PROCESSING MODULE B) BODY GROUND CIRCUIT

Ignition OFF.

Measure the resistance between the IPMB housing and a good body ground.

Is the resistance less than 3 ohms?

Yes

GO to T3

No	REPAIR the IPMB body ground as necessary.

T3 CHECK HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN IPMB (IMAGE PROCESSING MODULE B) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: IPMB C3676A.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3676A-18 C2431-18

C3676A-9 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to T4.

No	REPAIR the faulty circuit.

T4 CHECK IPMB (IMAGE PROCESSING MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the IPMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMB connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST U: APIM (APPLICATION AND PLATFORM INTERFACE MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 14. For circuit and connector information, refer to Wiring Diagram Cell 131.

Normal Operation and Fault Symptoms

The APIM communicates on the HS-CAN1, HS-CAN3 and HS-CAN4 buses.

Possible Sources

Fuse
Wiring, Terminals and Connectors
APIM

Visual Inspection and Pre-checks

Make sure that BCM fuse 15 (15 A) is good.

U1 CHECK APIM (ACCESSORY PROTOCOL INTERFACE MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: APIM C2383A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2383A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to U2

No	CHECK BCM fuse 15 (15 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

U2 CHECK APIM (ACCESSORY PROTOCOL INTERFACE MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2383A-37 Ground

Is the resistance less than 3 ohms?

Yes

GO to U3

No	REPAIR the circuit.

U3 CHECK HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN APIM (ACCESSORY PROTOCOL INTERFACE MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2383A-53 C2431-20

C2383A-54 C2431-19

Is the resistance less than 3 ohms?

Yes

GO to U4

No	REPAIR the faulty circuit.

U4 CHECK HS-CAN3 (HIGH SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN APIM (ACCESSORY PROTOCOL INTERFACE MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2383A-19 C2431-16

C2383A-20 C2431-15

Is the resistance less than 3 ohms?

Yes

If equipped with TCU, GO to U5.
If not equipped with TCU, GO to U6.

No	REPAIR the faulty circuit.

U5 CHECK HS-CAN4 (HIGH SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN APIM (ACCESSORY PROTOCOL INTERFACE MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2383A-41 C2431-7

C2383A-42 C2431-6

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to U6.

No	REPAIR the faulty circuit.

U6 CHECK APIM (ACCESSORY PROTOCOL INTERFACE MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (APIM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST V: DSP (DIGITAL SOUND PROCESSOR MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 14. For circuit and connector information, refer to Wiring Diagram Cell 131.

Normal Operation and Fault Symptoms

The DSP communicates on the HS-CAN3 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DSP

Visual Inspection and Pre-checks

Make sure the BCM [BJB] fuses 115 (20 A) and 127 (20 A) are OK.

V1 CHECK DSP (DIGITAL SOUND PROCESSOR) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: DSP C4326A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4326A-4 Ground

C4326A-8 Ground

Is the voltage greater than 11 volts?

Yes

GO to Step 2

No	CHECK BCMC [BJB] fuse 115 (20 A) or 127 (20 A) for continuity. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

V2 CHECK DSP (DIGITAL SOUND PROCESSOR) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4326A-1 Ground

C4326A-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to V3

No	REPAIR the faulty circuit.

V3 CHECK HS-CAN3 (HIGH SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN DSP (DIGITAL SOUND PROCESSOR) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Disconnect: DSP C4326B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4326B-1 C2431-16

C4326B-11 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to V4.

No	REPAIR the faulty circuit.

V4 CHECK DSP (DIGITAL SOUND PROCESSOR) OPERATION

Ignition OFF.

Disconnect and inspect all DSP connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new DSP.
REFER to: Digital Signal Processor (DSP) (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST W: WACM (WIRELESS ACCESSORY CHARGING MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 12. For circuit and connector information, refer to Wiring Diagram Cell 14.

Normal Operation and Fault Symptoms

The WACM communicates on the HS-CAN3 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
WACM

Visual Inspection and Pre-checks

Check that BCM fuse 3 (7.5A) is in good condition.

W1 CHECK WACM (WIRELESS ACCESSORY CHARGING MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: WACM C390.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C390-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to W2

No	CHECK BCM fuse 3 (7.5 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

W2 CHECK WACM (WIRELESS ACCESSORY CHARGING MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C390-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to W3

No	REPAIR the circuit.

W3 CHECK HS-CAN3 (HIGH SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN WACM (WIRELESS ACCESSORY CHARGING MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C390-8 C2431-16

C390-7 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to W4.

No	REPAIR the faulty circuit.

W4 CHECK WACM (WIRELESS ACCESSORY CHARGING MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the WACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the WACM connector. Make sure that it is correctly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new WACM.
REFER TO: Wireless Accessory Charging Module (WACM) (414-06 Accessory Charging, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST X: TCU (TELEMATICS CONTROL UNIT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 13. For circuit and connector information, refer to Wiring Diagram Cell 131.

Normal Operation and Fault Symptoms

The TCU communicates on the HS-CAN4 network.

Possible Sources

Fuse
Wiring, Terminals and Connectors
TCU

Visual Inspection and Pre-checks

Make sure the BCM fuse 8 (5 A) (without emergency call) or BCM fuses 2 (10 A) and 9 (5 A) (with emergency call) are OK.

X1 CHECK HS-CAN4 (HIGH SPEED CONTROLLER AREA NETWORK 4) TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the remote DLC.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 C2431-6

Is the resistance between 108 and 132 ohms?

Yes

CONNECT the GWM. GO to X3.

GO to X2

X2 CHECK HS-CAN4 (HIGH SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN TCU (TELEMATICS CONTROL UNIT) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: TCU C4803A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4803A-8 C2431-7

C4803A-16 C2431-6

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to X5.

No	REPAIR the faulty circuit.

X3 CHECK TCU (TELEMATICS CONTROL UNIT) POWER SUPPLY CIRCUIT FOR OPEN

Connect the battery negative cable.

The ignition is on.

Action:
Click to display the connectors
Without emergency call

Positive lead Measurement/Action Negative lead

C4803A-1 Ground

Click to display the connectors
With emergency call

Positive lead Measurement/Action Negative lead

C4803A-1 Ground

C4803A-9 Ground

Is the voltage greater than 11 volts?

Yes

GO to X4

No	CHECK BCM fuse 8 (5 A) (without emergency call) or BCM fuses 2 (10 A) and 9 (5 A) (with emergency call) for continuity. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

X4 CHECK TCU (TELEMATICS CONTROL UNIT) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4803A-13 Ground

Is the resistance less than 3 ohms?

Yes

GO to X5

No	REPAIR the circuit.

X5 CHECK TCU (TELEMATICS CONTROL UNIT) OPERATION

Ignition OFF.

Disconnect and inspect the TCU connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the TCU connector. Make sure it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSBs, GSBs, SSMs or FSAs. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service information applies, INSTALL a new TCU.
REFER TO: Telematics Communication Unit (TCU) Module (415-00B Information and Entertainment System - General Information, Removal and Installation) - Vehicles With: SYNC 3.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST Y: RTM (RADIO TRANSMITTER MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 14. For circuit and connector information, refer to Wiring Diagram Cell 118.

Normal Operation and Fault Symptoms

The RTM communicates on the MS-CAN network.

Possible Sources

Fuse
Wiring, Terminals and Connectors
RTM

Visual Inspection and Pre-checks

Make sure the BCM fuse 31 (10 A) is OK.

Y1 CHECK RTM (RADIO TRANSCEIVER MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: RTM C3156.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3156-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to Y2

No	CHECK BCM fuse 31 (10 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

Y2 CHECK RTM (RADIO TRANSCEIVER MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3156-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to Y3

No	REPAIR the circuit.

Y3 CHECK MS-CAN (MEDIUM SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN RTM (RADIO TRANSCEIVER MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3156-4 C2431-23

C3156-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to Y4

No	REPAIR the faulty circuit.

Y4 CHECK RTM (RADIO TRANSCEIVER MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RTM connector. Make sure that it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information procedure. If no service information applies, INSTALL a new RTM.
REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST Z: PSCM (POWER STEERING CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 43 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

The PSCM communicates on the HS-CAN2 network.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PSCM

Visual Inspection and Pre-checks

Check that the BJB MEGA fuse 204 (80A) and the BCMC [BJB] fuse 22 (10A) are OK.

Z1 CHECK PSCM (POWER STEERING CONTROL MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: PSCM C1463A and C1463B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1463A-1 Ground

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1463B-3 Ground

Is the voltage greater than 11 volts?

Yes

GO to Z2

No	CHECK BJB MEGA fuse 204 (80A) or BCMC [BJB] fuse 22 (10A) for OK. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

Z2 CHECK PSCM (POWER STEERING CONTROL MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1463A-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to Z3

No	REPAIR the circuit.

Z3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN PSCM (POWER STEERING CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1463B-1 C2431-18

C1463B-2 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to Z4

No	REPAIR the faulty circuit.

Z4 CHECK PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PSCM connectors and the related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and the related inline connectors. Make sure that they are fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided routine (EPAS).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AA: DSM (DRIVER SEAT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 123 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

The DSM communicates on the MS-CAN network.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DSM

Visual Inspection and Pre-checks

Check that BCMC [BJB] fuses 30 (30A) and 38 (30A) (climate-controlled seats) are OK.

AA1 CHECK DSM (DRIVER SEAT MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: DSM C341C.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341C-2 Ground

C341C-3 Ground

Is the voltage greater than 11 volts?

Yes

GO to AA2

No	CHECK BCMC [BJB] fuses 30 (30A) and 38 (30A) (climate-controlled seats) for OK. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

AA2 CHECK DSM (DRIVER SEAT MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341C-4 Ground

C341C-5 Ground

C341C-6 Ground

Is the resistance less than 3 ohms?

Yes

GO to AA3

No	REPAIR the faulty circuit.

AA3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN DSM (DRIVER SEAT MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the CSM C341A.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341A-5 C2431-23

C341A-15 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to AA4

No	REPAIR the faulty circuit.

AA4 CHECK DSM (DRIVER SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AB: DDM (DRIVER DOOR MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 100 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

The DDM communicates on the MS-CAN network.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DDM

Visual Inspection and Pre-checks

Check that BCMC [BJB] fuse 73 (30A) is OK.

AB1 CHECK DDM (DRIVER DOOR MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: DDM C501A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C501A-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to AB2

No	CHECK BCMC [BJB] fuse 73 (30A) for OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

AB2 CHECK DDM (DRIVER DOOR MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C501A-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to AB3

No	REPAIR the circuit.

AB3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN DDM (DRIVER DOOR MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C501A-4 C2431-23

C501A-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to AB4

No	REPAIR the faulty circuit.

AB4 CHECK DDM (DRIVER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all DDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connectors. Make sure they are fully seated and properly latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles exist for this concern, INSTALL a new DDM.
REFER TO: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AC: PDM (PASSENGER DOOR MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 100 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

PDM communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PDM

Visual Inspection and Pre-checks

Check that BCMC [BJB] fuse 109 (30A) is OK.

AC1 CHECK PDM (PASSENGER DOOR MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: PDM C652A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C652A-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to AC2

No	CHECK BCMC [BJB] fuse 109 (30A) for OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

AC2 CHECK PDM (PASSENGER DOOR MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C652A-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to AC3

No	REPAIR the circuit.

AC3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN PDM (PASSENGER DOOR MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C652A-4 C2431-23

C652A-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to AC4

No	REPAIR the faulty circuit.

AC4 CHECK PDM (PASSENGER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connectors. Make sure they are fully seated and properly latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, REPLACE the PDM.
REFER TO: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AD: SODL (SIDE OBSTACLE DETECTION CONTROL MODULE, LEFT) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 146 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

SODL communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PDM

Visual Inspection and Pre-checks

Check the BCMC [BJB] fuse 25 (10 A) for continuity.

AD1 CHECK SODL (SIDE OBSTACLE DETECTION CONTROL MODULE, LEFT) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: SODL C4369.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4369-5 Ground

Is the voltage greater than 11 volts?

Yes

GO to AD2

No	CHECK BCMC [BJB] fuse 25 (10 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

AD2 CHECK SODL (SIDE OBSTACLE DETECTION CONTROL MODULE, LEFT) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4369-8 Ground

Is the resistance less than 3 ohms?

Yes

GO to AD3

No	REPAIR the circuit.

AD3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN SODL (SIDE OBSTACLE DETECTION CONTROL MODULE, LEFT) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4369-6 C2431-23

C4369-7 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to AD4

No	REPAIR the faulty circuit.

AD4 CHECK SODL (SIDE OBSTACLE DETECTION CONTROL MODULE, LEFT) OPERATION

Ignition OFF.

Disconnect and inspect the SODL connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODL connector. Make sure it is properly installed and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new SODL.
REFER TO: Object Detection Control Module (419-04 Side and Rear Vision, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AE: SODR (SIDE OBSTACLE DETECTION CONTROL MODULE, RH) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 146 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

SODR communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DDM

Visual Inspection and Pre-checks

Check the BCMC [BJB] fuse 25 (10 A) for continuity.

AE1 CHECK SODR (SIDE OBSTACLE DETECTION CONTROL MODULE, RIGHT) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: SODR C4370.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4370-5 Ground

Is the voltage greater than 11 volts?

Yes

GO to AE2

No	CHECK BCMC [BJB] fuse 25 (10 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

AE2 CHECK SODR (SIDE OBSTACLE DETECTION CONTROL MODULE, RIGHT) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4370-3 Ground

C4370-8 Ground

Is the resistance less than 3 ohms?

Yes

GO to AE3

No	REPAIR the faulty circuit.

AE3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN SODR (SIDE OBSTACLE DETECTION CONTROL MODULE, RIGHT) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4370-6 C2431-23

C4370-7 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT GWM. GO to AE4

No	REPAIR the faulty circuit.

AE4 CHECK SODR (SIDE OBSTACLE DETECTION CONTROL MODULE, RIGHT) OPERATION

Ignition OFF.

Disconnect and inspect the SODR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODR connector. Make sure it is properly installed and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new SODR.
REFER TO: Object Detection Control Module (419-04 Side and Rear Vision, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AF: SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Cell 14 of the Wiring Diagrams. For circuit and connector information, refer to Cell 123 of the Wiring Diagrams.

Normal Operation and Fault Symptoms

SCMG communicates on the MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SCMG

Visual Inspection and Pre-checks

Check that BCMC [BJB] fuse 61 (15A) is OK.

AF1 CHECK SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect: SCMG C3385.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3385-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AF3.

No	CHECK the BCMC [BJB] fuse 61 (15A) for correct operation. If OK, go to AF2. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

AF2 CHECK THE MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCMC [BJB] C1035C.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035C-6 C3385-1

Is the resistance less than 3 ohms?

Yes

REFER to the Wiring Diagrams manual to determine the possible cause of the power supply circuit fault.

No	REPAIR the open circuit.

AF3 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3385-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AF4

No	REPAIR the circuit.

AF4 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3385-8 C2431-23

C3385-7 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AF5.

No	REPAIR the faulty circuit.

AF5 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connector and the related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector and the related inline connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new SCMG.
REFER TO: Driver Seat Multi-Contour Module [SCMG] (501-10A Front Seats, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AG: SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. For wiring diagrams and connector information, refer to Wiring Diagrams Cell 120.

Normal Operation and Fault Symptoms

The SCMH communicates on the MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SCMG

Visual Inspection and Pre-checks

Check that BCMC [BJB] fuse 61 (15A) is OK.

AG1 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCMH C3386.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3386-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AG3

No	CHECK the BCMC [BJB] fuse 61 (15A) for correct operation. If OK, GO to AG2. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

AG2 CHECK THE MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCMC [BJB] C1035C.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035C-6 C3386-1

Is the resistance less than 3 ohms?

Yes

REFER to the Wiring Diagrams manual to determine the possible cause of the power supply circuit fault.

No	REPAIR the circuit.

AG3 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3386-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AG4

No	REPAIR the circuit.

AG4 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3386-8 C2431-23

C3386-7 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AG5.

No	REPAIR the faulty circuit.

AG5 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connector and the related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector and the related inline connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists for this concern, INSTALL a new SCMH.
REFER TO: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AH: SCMJ (POWER FOLDING SEAT MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. For wiring diagrams and connector information, refer to Wiring Diagrams Cell 120.

Normal Operation and Fault Symptoms

The SCMJ communicates on the MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SCMJ

Visual Inspection and Pre-checks

Make sure the BCMC [BJB] fuse 131 (40A) is in good condition.

AH1 CHECK THE SCMJ (POWER FOLDING SEAT MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCMJ C4250A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4250A-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to AH3

No	CHECK the BCMC [BJB] fuse 131 (40A) for correct operation. If OK, go to AH2. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

AH2 CHECK THE THIRD ROW SEAT UNLOCK RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCMC [BJB] C1035C.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1035C-1 C4250A-10

Is the resistance less than 3 ohms?

Yes

REFER to the Wiring Diagrams manual to determine the possible cause of the power supply circuit fault.

No	REPAIR the circuit.

AH3 CHECK THE SCMJ (POWER FOLDING SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect SCMJ C4250B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4250B-7 Ground

Is the resistance less than 3 ohms?

Yes

GO to AH4

No	REPAIR the circuit.

AH4 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMJ (POWER FOLDING SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: SCMJ C4250C.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4250C-8 C2431-23

C4250C-7 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AH5.

No	REPAIR the faulty circuit.

AH5 CHECK THE SCMJ (POWER FOLDING SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all SCMJ connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMJ connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service documents apply, INSTALL a new SCMJ.
REFER to: Power Folding Seat Module [SCMJ] (501-10C Third Row Seats, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AI: RGTM (REAR LIFTGATE MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. Refer to Wiring Diagrams Cell 109 for wiring diagrams and connector information.

Normal Operation and Fault Symptoms

RGTM communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
RKE

Visual Inspection and Pre-checks

Make sure the BCMC [BJB] fuse 41 (30 A) and BCM fuse 8 (5 A) are in good condition.

AI1 CHECK THE RGTM (POWER LIFTGATE MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: RGTM C4174A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4174A-2 Ground

C4174A-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to AI2

No	CHECK the BCMC [BJB] fuse 41 (30 A) and BCM fuse 8 (5A) for correct operation. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

AI2 CHECK THE RGTM (POWER LIFTGATE MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4174A-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to AI3

No	REPAIR the circuit.

AI3 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE RGTM (POWER LIFTGATE MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4174A-4 C2431-23

C4174A-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AI4.

No	REPAIR the faulty circuit.

AI4 CHECK THE RGTM (POWER LIFTGATE MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the RGTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RGTM connector. Make sure it is installed correctly and clicks into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AJ: TRM (TRAILER MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 14. For wiring diagrams and connector information, refer to Wiring Diagrams Cell 95.

Normal Operation and Fault Symptoms

TRM communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
TRM

Visual Inspection and Pre-checks

Make sure the BCMC [BJB] fuses 57 (30 A) and 91 (20 A) are in good condition.

AJ1 CHECK THE TRM (TRAILER MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: TRM C2498A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2498A-2 Ground

C2498A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AJ2

No	CHECK the BCMC [BJB] fuse 57 (30A) or 91 (20A) for correct operation. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

AJ2 CHECK THE TRM (TRAILER MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: TRM C2498B and C2498C.

Action:
Click to display the connectors
With Police Package

Positive lead Measurement/Action Negative lead

C2498B-1 Ground

Click to display the connectors
Without Police Package only

Positive lead Measurement/Action Negative lead

C2498B-1 Ground

C2498C-6 Ground

Is the resistance less than 3 ohms?

Yes

GO to AJ3

No	REPAIR the faulty circuit.

AJ3 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE TRM (TRAILER MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2498B-3 C2431-23

C2498B-2 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AJ4.

No	REPAIR the faulty circuit.

AJ4 CHECK THE TRM (TRAILER MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the TRM connectors. Make sure that they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new TRM.
REFER TO: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AK: ATCM (ALL TERRAIN CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For schematic and connector information, refer to Wiring Diagrams Cell 14. For schematic and connector information, refer to Wiring Diagrams Cell 34.

Normal Operation and Fault Symptoms

The ATCM communicates on the HS-CAN2.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DSCM

Visual Inspection and Pre-checks

Make sure the BCM fuse 31 (10 A) is OK.

AK1 CHECK THE ATCM (ADVANCED TRAC CONTROL MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: ATCM C3639.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3639-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AK2

No	CHECK BCM fuse 31 (10 A) for continuity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

AK2 CHECK THE ATCM (ADVANCED TRAC CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3639-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AK3

No	REPAIR the circuit.

AK3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE ATCM (ALL TERRAIN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3639-3 C2431-18

C3639-2 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT THE GWM. GO to AK4

No	REPAIR the faulty circuit.

AK4 CHECK THE ATCM (ALL TERRAIN CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the ATCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ATCM connector. Make sure that it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST: BECM (BATTERY ENERGY CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

Refer to Wiring Diagram Cell 12 for schematic and connector information. Refer to Wiring Diagram Cell 21 for schematic and connector information.

Normal Operation and Fault Symptoms

BECM communicates via HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors

Visual Inspection and Pre-checks

Make sure that the BCMC [BJB] fuse 146 (15A) is in good condition.

AL1 CHECK THE 12V HIGH-VOLTAGE BATTERY POWER CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: High-Voltage Battery C4238.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4238-5 Ground

C4238-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to AL2

No	CHECK the BCMC [BJB] fuse 146 (15A) for good condition. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams Manual to determine possible causes for the short circuit.

AL2 CHECK THE HIGH-VOLTAGE BATTERY WAKE-UP CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4238-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AL3

No	DIAGNOSE the SOBDMC alarm.

AL3 CHECK THE 12V HIGH-VOLTAGE BATTERY GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4238-25 Ground

C4238-26 Ground

Is the resistance less than 3 ohms?

Yes

GO to AL4

No	REPAIR the faulty circuit.

AL4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE HIGH-VOLTAGE BATTERY AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4238-16 C2431-20

C4238-15 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT THE GWM. GO to AL5

No	REPAIR the faulty circuit.

AL5 CHECK THE HIGH-VOLTAGE BATTERY FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the high-voltage battery connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the high-voltage battery connector. Make sure that it is correctly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service information exists, INSTALL a new high-voltage battery. Refer to Section 414-03.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AM: SOBDM (SECONDARY ONBOARD DIAGNOSTIC MONITORING CONTROL A) (BATTERY CHARGE CONTROL MODULE [BCCM]) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 12. For circuit and connector information, refer to Wiring Diagram Cell 14.

Normal Operation and Fault Symptoms

SOBDM (battery charging control module [BCCM]) communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
SOBDM (Battery Charge Control Module [BCCM])

Visual Inspection and Pre-checks

Make sure that the BCMC [BJB] fuse 46 (15A) is in good condition.

AM1 CHECK THE SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) POWER SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: SOBDM (Battery Charging Control Module [BCCM]) C1821A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1821A-H1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AM2

No	Confirm that the BCMC [BJB] fuse 46 (15A) is in good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine possible causes for the short circuit.

AM2 CHECK THE SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) WAKE-UP CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1821A-C2 Ground

Is the voltage greater than 11 volts?

Yes

GO to AM3

No	DIAGNOSE the SOBDMC alarm.

AM3 CHECK THE SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) BODY GROUND

Ignition OFF.

Measure the resistance between the SOBDM (battery charging control module [BCCM]) housing and a good chassis ground.

Is the resistance less than 3 ohms?

Yes

GO to AM4

No	REPAIR the SOBDM (battery charging control module [BCCM]) housing ground, if necessary.

AM4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1821A-E2 C2431-20

C1821A-E1 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT THE GWM. GO to AM5

No	REPAIR the faulty circuit.

AM5 CHECK THE SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all SOBDM (battery charging control module [BCCM]) connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SOBDM (Battery Charging Control Module [BCCM]) connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service information exists, INSTALL a new SOBDM (Battery Charging Control Module [BCCM]). Refer to Section 414-03.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST: DCDC (DC/DC CONVERTER CONTROL MODULE) DOES NOT RESPOND TO DIAGNOSTIC SCAN

For circuit and connector information, refer to Wiring Diagram Cell 12. For circuit and connector information, refer to Wiring Diagram Cell 14.

Normal Operation and Fault Symptoms

DCDC communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DCDC

Visual Inspection and Pre-checks

Make sure that the high-current BJB MEGA fuse 201 (275A) and the BCMC [BJB] fuse 159 (15A) are in good condition.
First perform diagnosis of all Diagnostic Trouble Codes (DTCs) set in the SOBDMC. DTCs set in this module may cause the vehicle to disable the DCDC module wake-up circuit, leaving the DCDC disabled.

AN1 CHECK THE DCDC (DC/DC CONVERTER CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS

Ignition OFF.

Disconnect: DCDC C1457B and C1457C.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1457B-1 Ground

Click to display connectors

Positive lead Measurement/Action Negative lead

C1457C-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AN2

No	CHECK the high-current BJB MEGA fuse 201 (275A) or the BCMC [BJB] fuse 159 (15A) for good condition. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams Manual to determine possible causes for the short circuit.

AN2 CHECK THE DCDC (DC/DC CONVERTER CONTROL MODULE) WAKE-UP CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1457B-5 Ground

Is the voltage greater than 11 volts?

Yes

GO to AN3

No	DIAGNOSE the SOBDMC alarm.

AN3 CHECK THE DCDC (DC/DC CONVERTER CONTROL MODULE) GROUND

Ignition OFF.

Measure the resistance between the DCDC case and a good chassis ground.

Is the resistance less than 3 ohms?

Yes

GO to AN4

No	REPAIR the DCDC ground as necessary.

AN4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE DCDC (DC/DC CONVERTER CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1457B-3 C2431-20

C1457B-4 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT THE GWM. GO to AN5

No	REPAIR the faulty circuit.

AN5 CHECK THE DCDC (DC/DC CONVERTER CONTROL MODULE) FOR PROPER OPERATION

Disconnect and inspect all DCDC connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DCDC connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information instructions. If no service information applies, INSTALL a new DCDC.
Refer to: DC/DC Converter Module (414-05 Voltage Converter/Inverter, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AO: ALL NETWORKS DO NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

The GWM communicates with the diagnostic scan tool through the DIAG 1 and DIAG 2 networks. The GWM acts as a gateway for communication between modules on HS-CAN1, HS-CAN2, HS-CAN3, HS-CAN4 and MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
GWM
Remote Downloadable Content

Visual Inspection and Pre-checks

Make sure that the BCM fuses 7 (10A) and 13 (7.5A) are in good condition.

AO1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the removed DLC pins 3, 4, 5, 6, 11, 14 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are there any pin fitment issues or pin damage at the remote DLC 3, 4, 5, 6, 11, 14 and 16?

Yes

CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this concern, STOP this test and FOLLOW the service bulletin instructions. If no service bulletin exists for this concern, INSTALL a new removed DLC.

GO to A02

AO2 CHECK GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to A03

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AO3 CHECK GWM (GATEWAY MODULE A) POWER SUPPLY CIRCUITS FOR OPEN

Ignition OFF.

Disconnect: GWM C2431.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-24 Ground

C2431-13 Ground

Is the voltage greater than 11 volts?

Yes

GO to A04

No	CHECK BCM fuses 7 (10A) and 13 (7.5A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short circuit.

AO4 CHECK GWM (GATEWAY MODULE A) GROUND CIRCUITS FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-1 Ground

C2431-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to A05

No	REPAIR the faulty circuit.

AO5 CHECK DIAG 1 AND DIAG 2 NETWORK CIRCUITS FOR SHORT TO EACH OTHER

Connect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-5 C2431-3

C2431-5 C2431-2

C2431-4 C2431-3

C2431-4 C2431-2

Are the resistances greater than 1000 Ohms?

Yes

GO to AO6

No	REPAIR the faulty circuit.

AO6 CHECK CONTACT RESISTANCE ON DIAGRAM 1, COMPONENT SIDE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-5 (component side) C2431-4 (component side)

Is the resistance between 108 and 132 ohms?

Yes

GO to AO7

GO to AO8

AO7 CHECK JUMPER RESISTANCE ON DIAGRAM 2, COMPONENT SIDE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-3 (component side) C2431-2 (component side)

Is the resistance between 108 and 132 ohms?

Yes

Replace the removed DLC. If the concern persists, GO to AO8.

GO to AO8

AO8 VERIFY PROPER GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AP: NO HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) COMMUNICATION, ALL MODULES DO NOT RESPOND

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

The HS-CAN1 modules communicate with the diagnostic scan tool through the removed DLC DIAG 1 circuits. REFER to: Communications Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
Remote Downloadable Content
ACCM (HEV/PHEV)
APIM
All-Wheel Drive Module (if equipped)
BCM
BCMC [BJB]
BECM (HEV/PHEV)
DCDC (HEV/PHEV)
GWM
PACM (HEV/PHEV)
PCM
SOBDM (Battery Charge Control Module [BCCM]) (PHEV)
SOBDMC (HEV/PHEV)

NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after completing the test procedure.

AP1 CHECK REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the remote DLC pins 4, 5, 6, 14 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are any pin fitment or damage concerns observed on remote DLC pins 4, 5, 6, 14 and 16?

Yes

GO to AP2

AP2 CHECK GATEWAY MODULE A (GWM) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AP3

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AP3 CHECK NETWORK CIRCUIT END RESISTANCE. REFER TO FIGURE 1.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 C2122-14

Is the resistance between 108 and 132 ohms?

Yes

GO to AP4

No	If the resistance is greater than 132 ohms, GO to AP6. If the resistance is less than 108 ohms, GO to AP7.

AP4 CHECK NETWORK CIRCUITS (+) AND (-) ON DIAG 1 FOR SHORT TO GROUND

Connect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 Ground

C2122-14 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AP5

GO to AP8

AP5 CHECK NETWORK CIRCUITS (+) AND (-) ON DIAG 1 FOR SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 Ground

C2122-14 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the faulty circuit.

GO to AP9

AP6 CHECK NETWORK CIRCUIT (+) AND (-) ON DIAG 1 FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 C2431-5

C2122-14 C2431-4

Is the resistance less than 3 ohms?

Yes

GO to AP40

No	REPAIR the faulty circuit.

AP7 CHECK NETWORK CIRCUITS (+) AND (-) FOR SHORT TO EACH OTHER AND DIAG 1

Connect the battery negative cable.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 C2122-14

Is the resistance greater than 1000 Ohms?

Yes

GO to AP40

No	REPAIR the circuit.

AP8 CHECK NETWORK CIRCUITS (+) AND (-) ON DIAG 1 FOR SHORT TO GROUND

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-6 Ground

C2122-14 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AP40

No	REPAIR the faulty circuit.

AP9 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) TERMINATING RESISTOR (PCM (POWERTRAIN CONTROL MODULE)) WITH GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect the battery negative cable.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 C2431-19

Is the resistance between 108 and 132 ohms?

Yes

GO to AP10

No	If the resistance is greater than 132 ohms, GO to AP13. If the resistance is less than 108 ohms, GO to AP14.

AP10 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (-) CIRCUITS FOR SHORT TO GROUND

Connect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 Ground

C2431-19 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AP11

No	GO to AP15

AP11 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (-) CIRCUITS FOR SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 Ground

C2431-19 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the faulty circuit.

No	GO to AP12

AP12 CHECK GWM (GATEWAY MODULE A) TERMINATING RESISTOR (COMPONENT SIDE)

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 (component side) C2431-19 (component side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to AP40

No	INSTALL a new GWM. REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

AP13 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) CIRCUITS BETWEEN PCM (POWERTRAIN CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect PCM C1381B (2.3 L EcoBoost), C1551B (3 L EcoBoost) or C175B (3.3 L Duratec).

Disconnect: GWM C2431.

Action:
Click to display the connectors
2.3 L EcoBoost

Positive lead Measurement/Action Negative lead

C1381B-67 C2431-20

C1381B-66 C2431-19

Click to display the connectors
3 L EcoBoost

Positive lead Measurement/Action Negative lead

C1551B-27 C2431-20

C1551B-12 C2431-19

Click to display the connectors
3.3 L Duratec

Positive lead Measurement/Action Negative lead

C175B-27 C2431-20

C175B-12 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AP16

No	REPAIR the faulty circuit.

AP14 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (-) CIRCUITS FOR SHORT TO EACH OTHER WITH MODULES DISCONNECTED

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 C2431-19

Disconnect the modules one at a time until the resistance is greater than 3 ohms.
- ACCM C1803A (HEV/PHEV)
- APIM C2383A
- All-Wheel Drive Module C3841 (if equipped)
- BPCM C2280G
- BCMC [BJB] C1035B
- High-voltage battery C4238 (HEV/PHEV)
- DCDC C1457B (HEV/PHEV)
- PACM C4525 (HEV/PHEV)
- PCM C1381B (2.3 L EcoBoost), C1551B (3 L EcoBoost) or C175B (3.3 L Duratec)
- SOBDM (Battery Charge Control Module [BCCM]) C1821A (PHEV)
- SOBDMC C1458A (HEV/PHEV)

Did the resistance change to a value greater than 3 ohms when one of the modules was disconnected?

Yes

For ACCM, GO to AP33.
For APIM, GO to AP34.
For all-wheel drive module, GO to AP35.
For BCM, GO to AP36.
For BCMC [BJB], GO to AP37.
For high-voltage battery, GO to AP38.
For DCDC, GO to AP39.
For PACM, GO to AP41.
For PCM, GO to AP42.
For SOBDM (Battery Charge Control Module [BCCM]), GO to AP43.
For SOBDMC, GO to AP44.

No	REPAIR the faulty circuit. RECONNECT all modules.

AP15 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (-) CIRCUITS FOR SHORT TO GROUND WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-20 Ground

C2431-19 Ground

Disconnect the modules one at a time until the resistance to ground exceeds 1000 ohms.
- ACCM C1803A (HEV/PHEV)
- APIM C2383A
- All-Wheel Drive Module C3841 (if equipped)
- BPCM C2280G
- BCMC [BJB] C1035B
- High-voltage battery C4238 (HEV/PHEV)
- DCDC C1457B (HEV/PHEV)
- PACM C4525 (HEV/PHEV)
- PCM C1381B (2.3 L EcoBoost), C1551B (3 L EcoBoost) or C175B (3.3 L Duratec)
- SOBDM (Battery Charge Control Module [BCCM]) C1821A (PHEV)
- SOBDMC C1458A (HEV/PHEV)

Did the resistance increase to more than 1000 ohms when one of the modules was disconnected?

Yes

No	REPAIR the faulty circuit. RECONNECT all modules.

AP16 CHECK FOR RESTORED COMMUNICATION WITH PCM (POWERTRAIN CONTROL MODULE) AND SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MODULE C) (IF EQUIPPED) WITH MODULES DISCONNECTED

Disconnect: BCMC [BJB] fuses 5 (5A), 6 (20A) and 24 (10A).

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuses. If this is a hybrid vehicle, GO to AP17.
INSTALL the removed fuses. If this is not a hybrid vehicle, GO to Pinpoint Test A.

No	INSTALL the removed fuses. GO to AP18

AP17 CHECK FOR RESTORED COMMUNICATION WITH SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MODULE C) WITH MODULE DISCONNECTED

NOTE: When rerunning the network test, close the network test application, otherwise the display will return to the previous network test results. Disconnect: SOBDMC C1458A.

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test B

No	CONNECT the module. GO to Pinpoint Test A

AP18 CHECK FOR RESTORED COMMUNICATION NETWORK WITH APIM (SYNC MODULE) INCOMPLETE

Disconnect: BCM fuse 15 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test U.

No	INSTALL the removed fuse. GO to AP19

AP19 VEHICLE EQUIPMENT CHECK - DCDC (DC/DC CONVERTER CONTROL MODULE)

Inspect the vehicle for DCDC.

Is the vehicle equipped with DCDC?

Yes

GO to AP20

No	GO to AP21

AP20 CHECK FOR RESTORED COMMUNICATION NETWORK WITH DCDC (DC/DC CONVERTER CONTROL MODULE) INCOMPLETE

Disconnect: BJB MEGA fuse 201 (275A) and BCMC [BJB] fuse 159 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AN

No	INSTALL the removed fuses. GO to AP21

AP21 VEHICLE EQUIPMENT CHECK - ACCM (AIR CONDITIONING CONTROL MODULE)

Inspect the vehicle for ACCM.

Is the vehicle equipped with ACCM?

Yes

GO to AP22

No	GO to AP23

AP22 CHECK FOR RESTORED COMMUNICATION NETWORK WITH ACCM (AIR CONDITIONING CONTROL MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 8 (20A) (HEV) or 14 (15A) (PHEV).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test O

No	INSTALL the removed fuses. GO to AP23

AP23 CHECK FOR RESTORED COMMUNICATION NETWORK WITH BCM (BODY CONTROL MODULE) INCOMPLETE

Disconnect: BCM C2280G.

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test J

No	CONNECT the module. GO to AP24

AP24 VEHICLE EQUIPMENT CHECK - AWD (ALL-WHEEL DRIVE) MODULE

Inspect the vehicle for a four-wheel drive module.

Is the vehicle equipped with a four-wheel drive module?

Yes

GO to AP25

No	GO to AP26

AP25 CHECK FOR RESTORED COMMUNICATION NETWORK WITH AWD (ALL-WHEEL DRIVE) MODULE DISABLED

Disconnect: BCMC [BJB] fuse 64 (40A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test H

No	INSTALL the removed fuse. GO to AP26

AP26 CHECK FOR RESTORED COMMUNICATION NETWORK WITH BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] INCOMPLETE

Disconnect: BCMC [BJB] C1035B.

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO TO Pinpoint Test K.

No	CONNECT the module. GO to AP27

AP27 VEHICLE EQUIPMENT CHECK - BECM (BATTERY ENERGY CONTROL MODULE)

Inspect the vehicle for BECM.

Is the vehicle equipped with BECM?

Yes

GO to AP28

No	GO to AP29

AP28 CHECK FOR RESTORED COMMUNICATION NETWORK WITH BECM (BATTERY ENERGY CONTROL MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 146 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AL

No	INSTALL the removed fuse. GO to AP29

AP29 VEHICLE EQUIPMENT CHECK - SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM])

Inspect the vehicle for a SOBDM (battery charging control module [BCCM]).

Is the vehicle equipped with a SOBDM (battery charging control module [BCCM])?

Yes

GO to AP30

No	GO to AP31

AP30 CHECK FOR RESTORED COMMUNICATION NETWORK WITH SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) DISABLED

Disconnect: BCMC [BJB] fuse 46 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AM

No	INSTALL the removed fuse. GO to AP31

AP31 VEHICLE EQUIPMENT CHECK - PACM (PEDESTRIAN ALERT CONTROL MODULE)

Inspect the vehicle for PACKAGE.

Is the vehicle equipped with the PACK?

Yes

GO to AP32

No	HS-CAN1 tests within specification. The concern may have been caused by a communication module. CONNECT all disconnected connectors or fuses. Test for Normal Operation. If the concern is still present, REFER to the root cause of any connector or terminal issues.

AP32 CHECK FOR RESTORED COMMUNICATION NETWORK WITH PACM (PEDESTRIAN ALERT CONTROL MODULE) INCOMPLETE

Disconnect: BCM fuse 22 (5A).

Using a scan tool, perform the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test L

No	INSTALL the removed fuses. HS-CAN1 tests within specification. The concern may have been caused by a communication module. CONNECT all disconnected connectors or fuses. Test for Normal Operation. If the concern is still present, REFER to the root cause of any connector or terminal issues.

AP33 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all ACCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new ACCM. For vehicles with 3.0L EcoBoost — Hybrid engine,
REFER to: Air Conditioning (A/C) Compressor — 3.3 L Duratec-V6 (412-00 Climate Control System — General Information, Removal and Installation).
For vehicles with 3.3L Duratec-V6 — Hybrid engine, REFER to: Air Conditioning (A/C) Compressor — 3.3L Duratec-V6 — Hybrid (BP) (412-00 Climate Control System — General Information, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP34 CHECK APIM (SYNC MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (APIM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP35 CHECK AWD (ALL-WHEEL DRIVE) MODULE FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the AWD module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the AWD module connector. Make sure it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP36 CHECK BCM (BODY CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (BCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP37 CHECK BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all BCMC [BJB] connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCMC [BJB] connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP38 CHECK HIGH-VOLTAGE BATTERY FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the high-voltage battery connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the high-voltage battery connector. Make sure that it is correctly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service information exists, INSTALL a new high-voltage battery. Refer to Section 414-03.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP39 CHECK DCDC (DC/DC CONVERTER CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all DCDC connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DCDC connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP40 CHECK GWM (GATEWAY MODULE A) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP41 CHECK PACM (PEDESTRIAN ALERT CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the PACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PACM connector. Make sure it is fully seated and clicks into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP42 CHECK PCM (POWERTRAIN CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the PCM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided routine (PCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP43 CHECK SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all SOBDM (battery charging control module [BCCM]) connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SOBDM (Battery Charging Control Module [BCCM]) connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service information exists, INSTALL a new SOBDM (Battery Charging Control Module [BCCM]). Refer to Section 414-03.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AP44 CHECK SOBDMC (SECONDARY ONBOARD DIAGNOSTIC MODULE C) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SOBDMC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SOBDMC connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AQ: NO HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION, ALL MODULES DO NOT RESPOND

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

HS-CAN2 modules communicate with the scan tool through the remote DLC DIAG 2 circuits. REFER TO: Communication Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
Remote Downloadable Content
ABS Module
ATCM (if equipped)
GSM (if equipped)
GWM
HCM (if equipped)
IPMA (if equipped)
IPMB (if equipped)
OCSM
PAM (if equipped)
PSCM
RCM
SCCM

NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after completing the test procedure.

AQ1 CHECK REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are there any pin fit issues or damaged pins on the remote DLC 3, 4, 5, 11 and 16?

Yes

GO to AQ2

AQ2 CHECK GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AQ3

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AQ3 CHECK THE NETWORK CIRCUIT TERMINATING RESISTANCE SHOWN IN FIGURE 2.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 C2122-11

Is the resistance between 108 and 132 ohms?

Yes

GO to AQ4

No	If the resistance is greater than 132 ohms, GO to AQ6. If the resistance is less than 108 ohms, GO to AQ7.

AQ4 CHECK THE HS-CAN2 (+) AND HS-CAN2 (-) CIRCUITS FOR A SHORT TO GROUND ON DIAGNOSTIC 2

Connect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 Ground

C2122-11 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AQ5

GO to AQ8

AQ5 CHECK THE HS-CAN2 (+) AND HS-CAN2 (-) CIRCUITS FOR A SHORT TO VOLTAGE ON DIAGNOSTIC 2

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 Ground

C2122-11 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the faulty circuit.

GO to AQ9

AQ6 CHECK THE HS-CAN2 (+) AND HS-CAN2 (-) CIRCUITS FOR AN OPEN ON DIAGNOSTIC 2

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 C2431-3

C2122-11 C2431-2

Is the resistance less than 3 ohms?

Yes

GO to AQ35

No	REPAIR the faulty circuit.

AQ7 CHECK THE HS-CAN2 (+) AND HS-CAN2 (-) CIRCUITS FOR A SHORT TOGETHER ON DIAGNOSTIC 2

Connect the battery negative cable.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 C2122-11

Is the resistance greater than 1000 Ohms?

Yes

GO to AQ35

No	REPAIR the circuit.

AQ8 CHECK THE HS-CAN2 (+) AND HS-CAN2 (-) CIRCUITS FOR A SHORT TO GROUND ON DIAGNOSTIC 2

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-3 Ground

C2122-11 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AQ35

No	REPAIR the faulty circuit.

AQ9 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) TERMINATING RESISTOR (SCCM (STEERING COLUMN CONTROL MODULE)) WITH GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect the battery negative cable.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 C2431-17

Is the resistance between 108 and 132 ohms?

Yes

GO to AQ10

No	If the resistance is greater than 132 Ohms, GO to AQ13. If the resistance is less than 108 Ohms, GO to AQ14.

AQ10 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 Ground

C2431-17 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AQ11

No	GO to AQ15

AQ11 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (-) CIRCUITS FOR A SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 Ground

C2431-17 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the faulty circuit.

No	GO to AQ12

AQ12 CHECK THE GWM (GATEWAY MODULE A) TERMINATING RESISTOR (COMPONENT SIDE)

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 (component side) C2431-17 (component side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to AQ35

No	INSTALL a new GWM. REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

AQ13 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect the SCCM C226A.

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C226A-5 C2431-18

C226A-6 C2431-17

Is the resistance less than 3 ohms?

Yes

RECONNECT all disconnected connectors. GO to AQ16

No	REPAIR the faulty circuit.

AQ14 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Disconnect: GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 C2431-17

Disconnect the modules one at a time until the resistance is greater than 3 ohms.
- ABS module C135A
- KSDA C3639 (if equipped)
- GSM C3590 (if equipped)
- HCM C2129 (if equipped)
- IPMA C9039 (if equipped)
- IPMB C3676A (if equipped)
- OCSM C3285
- PAM C3267A (if equipped)
- PSCM C1463B
- RCM C310B
- SCCM C226A

Did the resistance change to a value greater than 3 ohms when one of the modules was disconnected?

Yes

For the ABS module, GO to AQ32.
For the ATCM, GO to AQ33.
For the GSM, GO to AQ34.
For the HCM, GO to AQ36.
For the IPMA, GO to AQ37.
For the IPMB, GO to AQ38.
For the OCSM, GO to AQ39.
For the PAM, GO to AQ40.
For the PSCM, GO to AQ41.
For the RCM, GO to AQ42.
For the SCCM, GO to AQ43.

No	REPAIR the faulty circuit. RECONNECT all modules.

AQ15 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-18 Ground

C2431-17 Ground

Disconnect the modules one at a time until the resistance to ground exceeds 1000 ohms.
- ABS module C135A
- KSDA C3639 (if equipped)
- GSM C3590 (if equipped)
- HCM C2129 (if equipped)
- IPMA C9039 (if equipped)
- IPMB C3676A (if equipped)
- OCSM C3285
- PAM C3267A (if equipped)
- PSCM C1463B
- RCM C310B
- SCCM C226A

Did the resistance increase to more than 1000 ohms when one of the modules was disconnected?

Yes

No	REPAIR the faulty circuit. RECONNECT all modules.

AQ16 CHECK FOR RESTORED COMMUNICATION WITH THE SCCM (STEERING COLUMN CONTROL MODULE) WITH THE MODULE DISCONNECTED

NOTE: When rerunning the network test, close the network test application, otherwise the display will return to the previous network test results. Disconnect: SCCM C226A.

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test F

No	RECONNECT the module. GO to AQ17

AQ17 CHECK FOR RESTORED COMMUNICATION WITH THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE WITH THE MODULE DISCONNECTED

NOTE: When rerunning the network test, close the network test application, otherwise the display will return to the previous network test results. Disconnect: BCMC [BJB] fuses 23 (10A), 28 (40A) and 29 (60A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test C

No	INSTALL the removed fuses. GO to AQ18

AQ18 VEHICLE EQUIPMENT CHECK — ATCM (ALL TERRAIN CONTROL MODULE)

Inspect the vehicle for an ATCM.

Is the vehicle equipped with an ATCM?

Yes

GO to AQ19

No	GO to AQ20

AQ19 CHECK FOR RESTORED COMMUNICATION WITH THE ATCM (ALL TERRAIN CONTROL MODULE) INCOMPLETE

NOTE: When rerunning the network test, close the network test application, otherwise the display will return to the previous network test results. Disconnect: BCM fuse 31 (10A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AK

No	INSTALL the removed fuse. GO to AQ20

AQ20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PSCM (POWER STEERING CONTROL MODULE) INCOMPLETE

Disconnect: BJB MEGA fuse 204 (80A) and BCMC [BJB] fuse 22 (10A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test Z

No	INSTALL the removed fuses. GO to AQ21

AQ21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) INCOMPLETE

Disconnect: OCSM C3285.

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test E

No	RECONNECT the module. GO to AQ22

AQ22 VEHICLE EQUIPMENT CHECK — GSM (GEAR SHIFT MODULE)

Inspect the vehicle for the presence of a GSM.

Is the vehicle equipped with a GSM?

Yes

GO to AQ23

No	GO to AQ24

AQ23 CHECK FOR RESTORED COMMUNICATION WITH THE GSM (GEAR SHIFT MODULE) INCOMPLETE

Disconnect: BCM fuse 12 (7.5A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test G

No	INSTALL the removed fuse. GO to AQ24

AQ24 VEHICLE EQUIPMENT CHECK — HCM (HEADLAMP CONTROL MODULE)

Inspect the vehicle for an HCM.

Is the vehicle equipped with an HCM?

Yes

GO to AQ25

No	GO to AQ26

AQ25 CHECK FOR RESTORED COMMUNICATION WITH THE HCM (HEADLAMP CONTROL MODULE) INCOMPLETE

Disconnect: BCM fuse 17 (7.5A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test R

No	INSTALL the removed fuse. GO to AQ26

AQ26 VEHICLE EQUIPMENT CHECK — IPMA (IMAGE PROCESSING MODULE A) OR PAM (PARK AID MODULE)

Inspect the vehicle for an IPMA or PAM.

Is the vehicle equipped with an IPMA or PAM?

Yes

GO to AQ27

No	GO to AQ28

AQ27 CHECK FOR RESTORED COMMUNICATION WITH THE IPMA (IMAGE PROCESSING MODULE A) AND PAM (PARK AID MODULE) INCOMPLETE

Disconnect: BCM fuse 36 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuses. GO to AQ28

No	INSTALL the removed fuses. GO to AQ29

AQ28 CHECK FOR RESTORED COMMUNICATION WITH THE IPMA (IMAGE PROCESSING MODULE A) WITH THE MODULE DISCONNECTED

Disconnect: IPMA C9039.

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass network testing with the module disconnected?

Yes

RECONNECT the module. GO to Pinpoint Test S

No	RECONNECT the module. GO to Pinpoint Test M

AQ29 VEHICLE EQUIPMENT CHECK — IPMB (IMAGE PROCESSING MODULE B)

Inspect the vehicle for IPMB.

Is the vehicle equipped with IPMB?

Yes

GO to AQ30

No	GO to AQ31

AQ30 CHECK FOR RESTORED COMMUNICATION WITH IPMB (IMAGE PROCESSING MODULE B) DISCONNECTED

Remove: BCMC [BJB] fuse 25 (10A).

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test T

No	INSTALL the removed fuse. GO to AQ31

AQ31 CHECK FOR RESTORED COMMUNICATION WITH RCM (RESTRAINTS CONTROL MODULE) DISCONNECTED

Disconnect: RCM C310B.

Using a scan tool, perform the network test.

Do all other HS-CAN2 modules pass network testing with the module disconnected?

Yes

CONNECT the module. GO to Pinpoint Test D

No	CONNECT the module. HS-CAN2 tests within specification. The concern may have been caused by the communication module. CONNECT all disconnected connectors or fuses. Test for Normal operation. If the concern is still present, REFER to the root cause of any connector or pin concerns.

AQ32 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the ABS module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ABS module connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the Managed Routine (ABS).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ33 CHECK FOR CORRECT ATCM (ALL TERRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ATCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ATCM connector. Make sure that it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ34 CHECK FOR CORRECT GSM (GEAR SHIFT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the GSM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GSM connector. Make sure it is properly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ35 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ36 CHECK FOR CORRECT HCM (HEADLAMP CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the HCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HCM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new HCM.
REFER TO: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ37 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the IPMA connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMA connector. Make sure it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new IPMA.
REFER TO: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ38 CHECK FOR CORRECT IPMB (IMAGE PROCESSING MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect all IPMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMB connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ39 CHECK FOR CORRECT OCSM (OCCUPANT CLASSIFICATION SYSTEM MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the OCSM connector and the associated inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCSM connector and the associated inline connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ40 CHECK FOR CORRECT PAM (PARK ASSIST MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ41 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PSCM connectors and the related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and the related inline connectors. Make sure that they are fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided routine (EPAS).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ42 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RCM and related inline connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM and related inline connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the Guided Routine (RCM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AQ43 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connector. Make sure it is fully seated and clicked into place.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AR: NO HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) COMMUNICATION, ALL MODULES NOT RESPONDING

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

Diagnostic messages sent to and from the diagnostic scanner and the HS-CAN3 modules are available through the DIAG 2 circuits at the remote DLC. REFER to: Communication Network - System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
Remote Downloadable Content
ACM
APIM (if equipped)
DSP (if equipped)
PCM
GWM
WACM (if equipped)

NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after completing the test procedure.

AR1 CHECK REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are there any pin fit issues or damaged pins on the remote DLC 3, 4, 5, 11 and 16?

Yes

GO to AR2

AR2 CHECK GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AR3

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AR3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION

Using a scan tool, perform the network test.

Does the RCM pass the network test?

Yes

GO to AR4

No	GO TO Pinpoint Test AQ

AR4 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (IPC (INSTRUMENT PANEL CLUSTER)) TERMINATION RESISTANCE

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 C2431-15

Is the resistance between 108 and 132 ohms?

Yes

GO to AR5

No	If the resistance is greater than 132 ohms, GO to AR8. If the resistance is less than 108 ohms, GO to AR9.

AR5 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (-) CIRCUITS FOR SHORT TO GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 Ground

C2431-15 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AR6

No	GO to AR10

AR6 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (-) CIRCUITS FOR SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 Ground

C2431-15 Ground

Is the voltage greater than 6 volts?

Yes

REPAIR the faulty circuit.

GO to AR7

AR7 CHECK GWM (GATEWAY MODULE A) HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATING RESISTOR (COMPONENT SIDE)

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 (component side) C2431-15 (component side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to AR23

No	INSTALL a new GWM. REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

AR8 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN IPC (INSTRUMENT PANEL CLUSTER) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect: MPK C220.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C220-12 C2431-16

C220-13 C2431-15

Is the resistance less than 3 ohms?

Yes

GO to AR11

No	REPAIR the faulty circuit.

AR9 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (-) CIRCUITS FOR SHORT TOGETHER WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 C2431-15

Disconnect the modules one at a time until the resistance is greater than 3 ohms.
- APIM C2383A (if equipped)
- ACM C4240A (with synchronization) or C240A (without synchronization)
- DSP C4326B (if equipped)
- IPC C220
- WACM C390 (if equipped)

Did the resistance change to a value greater than 3 ohms when one of the modules was disconnected?

Yes

For APIM, GO to AR19
For ACM, GO to AR20.
For DSP, GO to AR21.
For IPC, GO to AR22
For WACM, GO to AR24

No	REPAIR the affected circuits. CONNECT all modules.

AR10 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (-) CIRCUITS FOR SHORT TO GROUND WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-16 Ground

C2431-15 Ground

Disconnect the modules one at a time until the resistance to ground exceeds 1000 ohms.
- APIM C2383A (if equipped)
- ACM C4240A (with synchronization) or C240A (without synchronization)
- DSP C4326B (if equipped)
- IPC C220
- WACM C390 (if equipped)

Are the resistances greater than 1000 Ohms?

Yes

For APIM, GO to AR19
For ACM, GO to AR20.
For DSP, GO to AR21.
For IPC, GO to AR22
For WACM, GO to AR24

No	REPAIR the faulty circuit. RECONNECT all modules.

AR11 CHECK FOR RESTORED COMMUNICATION WITH IPC (INSTRUMENT PANEL CLUSTER) DISCONNECTED

Disconnect: MPK C220.

Using a scan tool, perform the network test.

Do all other HS-CAN3 modules pass network testing?

Yes

CONNECT the module. GO to Pinpoint Test I

No	CONNECT the module. GO to AR12

AR12 CHECK VEHICLE EQUIPMENT — APIM (SYNC MODULE)

Inspect the vehicle for APIM.

Is the vehicle equipped with APIM?

Yes

GO to AR13

No	GO to AR14

AR13 CHECK FOR RESTORED COMMUNICATION WITH APIM (SYNC MODULE) DISCONNECTED

Disconnect: BCM fuse 15 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN3 modules pass network testing?

Yes

INSTALL the removed fuse. GO to Pinpoint Test U.

No	INSTALL the removed fuse. GO to AR14

AR14 CHECK FOR RESTORED COMMUNICATION WITH ACM (FRONT AUDIO CONTROL MODULE) DISCONNECTED

Remove: BCM fuse 32 (20A).

Using a scan tool, perform the network test.

Do all other HS-CAN3 modules pass network testing?

Yes

INSTALL the removed fuse. GO to Pinpoint Test Q.

No	INSTALL the removed fuse. GO to AR15

AR15 CHECK VEHICLE EQUIPMENT — DSP (DIGITAL SIGNAL PROCESSOR MODULE)

Inspect the vehicle for a DSP.

Is the vehicle equipped with a DSP?

Yes

GO to AR16

No	GO to AR17

AR16 CHECK FOR RESTORED COMMUNICATION WITH DSP (DIGITAL SIGNAL PROCESSOR MODULE) DISCONNECTED

Disconnect: BCMC [BJB] fuses 115 (20A) and 127 (20A).

Using a scan tool, perform the network test.

Do all other HS-CAN3 modules pass network testing?

Yes

INSTALL the removed fuses. GO to Pinpoint Test V

No	INSTALL the removed fuses. GO to AR17

AR17 CHECK VEHICLE EQUIPMENT — WACM (WIRELESS ACCESSORY CHARGING MODULE)

Inspect the vehicle for WACM.

Is the vehicle equipped with WACM?

Yes

GO to AR18

No	HS-CAN3 tests within specification. The concern may have been caused by the communication module. CONNECT all disconnected connectors or fuses. Test for Normal operation. If the concern is still present, REFER to the root cause of any connector or pin concerns.

AR18 CHECK FOR RESTORED COMMUNICATION WITH WACM (WIRELESS ACCESSORY CHARGING MODULE) DISCONNECTED

Disconnect: BCM module fuse 3 (7.5A).

Using a scan tool, perform the network test.

Do all other HS-CAN3 modules pass network testing?

Yes

INSTALL the removed fuse. GO to Pinpoint Test W

No	INSTALL the removed fuse. HS-CAN3 tests within specification. The concern may have been caused by the communication module. CONNECT all disconnected connectors or fuses. Test for Normal operation. If the concern is still present, REFER to the root cause of any connector or pin concerns.

AR19 CHECK APIM (SYNC MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (APIM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AR20 CHECK ACM (FRONT AUDIO CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all ACM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the ACM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new ACM. With SYNC
REFER to: Audio Control Module (ACM) (415-00B Information and Entertainment System — General Information — Vehicles With: SYNC 3, Removal and Installation).
Without SYNC, REFER to: Audio Control Module (ACM) (415-00A Information and Entertainment System — General Information — Vehicles Without SYNC 3, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AR21 CHECK THE DSP (DIGITAL SOUND PROCESSOR) MODULE FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all DSP connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new DSP.
REFER to: Digital Signal Processor (DSP) (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AR22 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (IPC).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AR23 CHECK THE GWM (GATEWAY MODULE A) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AR24 CHECK THE WACM (WIRELESS ACCESSORY CHARGING MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the WACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the WACM connector. Make sure that it is correctly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article addresses this concern, INSTALL a new WACM.
REFER TO: Wireless Accessory Charging Module (WACM) (414-06 Accessory Charging, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AS: NO HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) COMMUNICATION, ALL MODULES NOT RESPONDING

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

Diagnostic messages sent to and received from the diagnostic scan tool and the HS-CAN4 modules are available through the DIAG 2 circuits at the remote DLC. REFER TO: Network Communication - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
Remote Downloadable Content
APIM
GWM
TCU

NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after completing the test procedure.

AS1 CHECK THE REMOTE CONTROL DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are there any pin fit issues or damaged pins on the remote DLC 3, 4, 5, 11 and 16?

Yes

GO to AS2

AS2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AS3.

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AS3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION

Using a scan tool, perform the network test.

Does the RCM pass the network test?

Yes

GO to AS4.

No	GO TO Pinpoint Test AQ

AS4 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) TCU (TELEMATICS CONTROL UNIT) TERMINATING RESISTANCE

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 C2431-6

Is the resistance between 108 and 132 ohms?

Yes

GO to AS5.

No	If the resistance is greater than 132 ohms, GO to AS8. If the resistance is less than 108 ohms, GO to AS9.

AS5 CHECK HS-CAN4 (+) AND HS-CAN4 (-) CIRCUITS FOR A SHORT TO GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 Ground

C2431-6 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AS6.

No	GO to AS10

AS6 CHECK HS-CAN4 (+) AND HS-CAN4 (-) CIRCUITS FOR A SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 Ground

C2431-6 Ground

Is the voltage greater than 6 volts?

Yes

REPAIR the faulty circuit.

No	GO to AS7.

AS7 CHECK THE GWM (GATEWAY MODULE A) HS-CAN4 TERMINATING RESISTOR (COMPONENT SIDE)

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 (component side) C2431-6 (component side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to AS14

No	INSTALL a new GWM. REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

AS8 CHECK THE HS-CAN4 CIRCUITS BETWEEN THE TCU (TELEMATICS CONTROL UNIT) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: TCU C4803A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4803A-8 C2431-7

C4803A-16 C2431-6

Is the resistance less than 3 ohms?

Yes

GO to AS11

No	REPAIR the faulty circuit.

AS9 CHECK HS-CAN4 (+) AND HS-CAN4 (-) CIRCUITS FOR A SHORT TOGETHER WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 C2431-6

Disconnect the modules one at a time until the resistance is greater than 3 ohms.
- APIM C2383A
- TCU C4803A

Did the resistance change to a value greater than 3 ohms when one of the modules was disconnected?

Yes

For APIM, GO to AS13
For TCU, GO to AS15

No	REPAIR the affected circuits. CONNECT all modules.

AS10 CHECK HS-CAN4 (+) AND HS-CAN4 (-) CIRCUITS FOR A SHORT TO GROUND WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-7 Ground

C2431-6 Ground

Disconnect the modules one at a time until the resistance to ground exceeds 1000 ohms.
- APIM C2383A
- TCU C4803A

Are the resistances greater than 1000 Ohms?

Yes

For APIM, GO to AS13
For TCU, GO to AS15

No	REPAIR the faulty circuit. RECONNECT all modules.

AS11 CHECK FOR RESTORED COMMUNICATION WITH THE TCU (TELEMATICS CONTROL UNIT) INCOMPLETE

Disconnect: fuse 8 (5A) BCM (without emergency call) or fuses 2 (10A) and 9 (5A) BCM (with emergency call).

Using a scan tool, perform the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test X

No	INSTALL the removed fuse(s). GO to AS12

AS12 CHECK FOR RESTORED COMMUNICATION WITH THE APIM (AUDIO/VIDEO SYNCHRONIZATION MODULE) INCOMPLETE

Disconnect: BCM fuse 15 (15A).

Using a scan tool, perform the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test U.

No	INSTALL the removed fuse. HS-CAN4 tests within specification. The concern may have been caused by a communication module. CONNECT all disconnected connectors or fuses. Test for Normal Operation. If the concern is still present, REFER to the root cause of any connector or terminal concerns.

AS13 CHECK THE APIM (AUDIO/VIDEO SYNCHRONIZATION MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access the guided procedure (APIM).

Internet Explorer version 11 or later is required to perform this Pinpoint test.

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AS14 CHECK THE GWM (GATEWAY MODULE A) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AS15 CHECK THE TCU (TELEMATICS CONTROL UNIT) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all TCU connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the TCU connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AT: NO MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) COMMUNICATION, ALL MODULES NOT RESPONDING

For circuit and connector information, refer to Wiring Diagrams Cell 14.

Normal Operation and Fault Symptoms

Diagnostic messages sent to and received from the diagnostic scan tool and the MS-CAN modules are available through the DIAG 2 circuits at the remote DLC. REFER TO: Network Communication - System Operation and Component Description (418-00 Module Communication Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
Remote Downloadable Content
DDM (if equipped)
DSM (if equipped)
GWM
HVAC Module
PDM (if equipped)
RGTM (if equipped)
HVAC Module
RTM (if equipped)
SCMG (if equipped)
SCMG (if equipped)
SCMJ (if equipped)
SODL (if equipped)
SODR (if equipped)
TRM (if equipped)

NOTE: Various modules set network DTCs during this test procedure. Clear the DTCs from all modules after completing the test procedure.

AT1 CHECK THE REMOTE CONTROL DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a flexible probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (violet).

Are there any pin fit issues or damaged pins on the remote DLC 3, 4, 5, 11 and 16?

Yes

GO to AT2

AT2 CHECK THE GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AT3

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AT3 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION

Using a scan tool, perform the network test.

Does the RCM pass the network test?

Yes

GO to AT4

No	GO TO Pinpoint Test AQ

AT4 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE TERMINATING RESISTANCE

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 C2431-22

Is the resistance between 108 and 132 ohms?

Yes

GO to AT5

No	If the resistance is greater than 132 ohms, GO to AT8. If the resistance is less than 108 ohms, GO to AT9.

AT5 CHECK MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 Ground

C2431-22 Ground

Are the resistances greater than 1000 Ohms?

Yes

GO to AT6

No	GO to AT10

AT6 CHECK MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO VOLTAGE

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 Ground

C2431-22 Ground

Is the voltage greater than 6 volts?

Yes

REPAIR the faulty circuit.

GO to AT7

AT7 CHECK THE GWM (GATEWAY MODULE A) MS-CAN TERMINATING RESISTOR (COMPONENT SIDE)

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 (component side) C2431-22 (component side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to AT34

No	INSTALL a new GWM. REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

AT8 CHECK THE MS-CAN CIRCUITS BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: HVAC module C228A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C228A-17 C2431-23

C228A-18 C2431-22

Is the resistance less than 3 ohms?

Yes

GO to AT11

No	REPAIR the faulty circuit.

AT9 CHECK MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TOGETHER WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 C2431-22

Disconnect the modules one at a time until the resistance is greater than 3 ohms.
- DDM C501A (if equipped)
- SCMG C341A (if equipped)
- HVAC Module C228A
- DPM C652A (if equipped)
- RGTM C4174A (if equipped)
- RHVAC Module C3198
- RTM C3156
- SCMG C3385 (if equipped)
- SCMG C3386 (if equipped)
- SCMJ C4250C (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (if equipped)
- TRM C2498B (if equipped)

Did the resistance change to a value greater than 3 ohms when one of the modules was disconnected?

Yes

For DDM, GO to AT32.
For DSM, GO to AT33.
For HVAC module, GO to AT35.
For PDM, GO to AT36.
For RGTM, GO to AT37.
For RHVAC module, GO to AT38.
For RTM, GO to AT39.
For SCMG, GO to AT40.
For SCMH, GO to AT41.
For SCMJ, GO to AT42.
For SODL, GO to AT43.
For SODR, GO to AT44.
For TRM, GO to AT45.

No	REPAIR the affected circuits. CONNECT all modules.

AT10 CHECK MS-CAN (+) AND MS-CAN (-) CIRCUITS FOR A SHORT TO GROUND WITH MODULES DISCONNECTED

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-23 Ground

C2431-22 Ground

Disconnect the modules one at a time until the resistance to ground exceeds 1000 ohms.
- DDM C501A (if equipped)
- SCMG C341A (if equipped)
- HVAC Module C228A
- DPM C652A (if equipped)
- RGTM C4174A (if equipped)
- RHVAC Module C3198
- RTM C3156
- SCMG C3385 (if equipped)
- SCMG C3386 (if equipped)
- SCMJ C4250C (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (if equipped)
- TRM C2498B (if equipped)

Are the resistances greater than 1000 Ohms?

Yes

No	REPAIR the faulty circuit. RECONNECT all modules.

AT11 CHECK FOR RESTORED COMMUNICATION WITH THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DISCONNECTED

Disconnect: BCM fuse 12 (7.5A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test N

No	INSTALL the removed fuse. GO to AT12

AT12 CHECK FOR RESTORED COMMUNICATION WITH THE RTM (RADIO TRANSCEIVER MODULE) INCOMPLETE

Disconnect: BCM fuse 31 (10A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test Y

No	INSTALL the removed fuse. GO to AT13

AT13 VEHICLE EQUIPMENT CHECK – SODL (LEFT BLIND SPOT DETECTION CONTROL MODULE) AND SODR (RIGHT BLIND SPOT DETECTION CONTROL MODULE)

Inspect the vehicle for SODL and SODR.

Is the vehicle equipped with SODL and SODR?

Yes

GO to AT14

No	GO to AT16

AT14 CHECK FOR RESTORED COMMUNICATION WITH SODL (LEFT BLIND SPOT DETECTION CONTROL MODULE) AND SODR (RIGHT BLIND SPOT DETECTION CONTROL MODULE) INCOMPLETE

Remove: BCMC [BJB] fuse 25 (10A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to AT15

No	INSTALL the removed fuse. GO to AT16

AT15 CHECK FOR RESTORED COMMUNICATION WITH SODR (RIGHT BLIND SPOT DETECTION CONTROL MODULE) MODULE DISABLED

Disconnect: SODR C4370.

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AE

No	CONNECT the module. GO to Pinpoint Test AE

AT16 VEHICLE EQUIPMENT CHECK – TRM (TRAILER MODULE)

Inspect the vehicle for TRM.

Is the vehicle equipped with TRM?

Yes

GO to AT17

No	GO to AT18

AT17 CHECK FOR RESTORED COMMUNICATION WITH TRM (TRAILER MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuses 57 (30A) and 91 (20A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AJ

No	INSTALL the removed fuses. GO to AT18

AT18 VEHICLE EQUIPMENT CHECK – PDM (PASSENGER DOOR MODULE)

Inspect the vehicle for PDM.

Is the vehicle equipped with PDM?

Yes

GO to AT19

No	GO to AT20

AT19 CHECK FOR RESTORED COMMUNICATION WITH PDM (PASSENGER DOOR MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 109 (30A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AC

No	INSTALL the removed fuse. GO to AT20

AT20 VEHICLE EQUIPMENT CHECK – DDM (DRIVER DOOR MODULE)

Inspect the vehicle for DDM.

Is the vehicle equipped with DDM?

Yes

GO to AT21

No	GO to AT22

AT21 CHECK FOR RESTORED COMMUNICATION WITH DDM (DRIVER DOOR MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 73 (30A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AB

No	INSTALL the removed fuse. GO to AT22

AT22 CHECK FOR RESTORED COMMUNICATION WITH RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE DISABLED

Disconnect: BCM fuse 9 (5A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO TO Pinpoint Test P.

No	INSTALL the removed fuse. GO to AT23

AT23 VEHICLE EQUIPMENT CHECK – SCMJ (POWER FOLDING SEAT MODULE)

Inspect the vehicle for SCMJ.

Is the vehicle equipped with SCMJ?

Yes

GO to AT24

No	GO to AT25

AT24 CHECK FOR RESTORED COMMUNICATION WITH SCMJ (POWER FOLDING SEAT MODULE) MODULE DISABLED

Disconnect: BCMC [BJB] fuse 131 (40A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AH

No	INSTALL the removed fuse. GO to AT25

AT25 VEHICLE EQUIPMENT CHECK – SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE)

Inspect the vehicle for SCMG and SCMH.

Is the vehicle equipped with SCMG and SCMH?

Yes

GO to AT26

No	GO to AT28

AT26 CHECK FOR RESTORED COMMUNICATION WITH SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 61 (15A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to AT27

No	INSTALL the removed fuse. GO to AT28

AT27 CHECK FOR RESTORED COMMUNICATION WITH SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) MODULE DISABLED

Disconnect: SCMG C3385.

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AF

No	CONNECT the module. GO to Pinpoint Test AG

AT28 VEHICLE EQUIPMENT CHECK – DSM (DRIVER FRONT SEAT MODULE)

Inspect the vehicle for DSM.

Is the vehicle equipped with DSM?

Yes

GO to AT29

No	GO to AT30

AT29 CHECK FOR RESTORED COMMUNICATION WITH DSM (DRIVER FRONT SEAT MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuses 30 (30A) and 38 (30A) (seats with climate control).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AA

No	INSTALL the removed fuses. GO to AT30

AT30 VEHICLE EQUIPMENT CHECK – RGTM (REAR LIFTGATE MODULE)

Inspect the vehicle for RGTM.

Is the vehicle equipped with RGTM?

Yes

GO to AT31

No	MS-CAN tests within specification. The concern may have been caused by the communication module. CONNECT all disconnected connectors or fuses. Test for Normal Operation. If the concern is still present, REFER to the root cause of any connector or pin problems.

AT31 CHECK FOR RESTORED COMMUNICATION WITH RGTM (REAR LIFTGATE MODULE) INCOMPLETE

Disconnect: BCMC [BJB] fuse 41 (30A) and BCM fuse 8 (5A).

Using a scan tool, perform the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AI

No	INSTALL the removed fuses. MS-CAN tests within specification. The concern may have been caused by the communication module. CONNECT all disconnected connectors or fuses. Test for Normal Operation. If the concern is still present, REFER to the root cause of any connector or pin problems.

AT32 CHECK DDM (DRIVER DOOR MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all DDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connectors. Make sure they are fully seated and properly latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles exist for this concern, INSTALL a new DDM.
REFER TO: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT33 CHECK DSM (DRIVER FRONT SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT34 CHECK GWM (GATEWAY MODULE A) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT35 CHECK HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all HVAC module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the HVAC module connectors. Make sure they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins exist, INSTALL a new HVAC module.
REFER TO: Heating, Ventilation and Air Conditioning (HVAC) Module (412-00 Climate Control System - General Information, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT36 CHECK PDM (PASSENGER DOOR MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all PDM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connectors. Make sure they are fully seated and properly latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, REPLACE the PDM.
REFER TO: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT37 CHECK RGTM (REAR LIFTGATE MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all RGTM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RGTM connectors. Make sure they are properly installed and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT38 CHECK RHVAC (REAR HEATING, VENTILATION AND AIR CONDITIONING) MODULE FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the RHVAC module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RHVAC module connector. Make sure it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply, INSTALL a new RHVAC module.
REFER to: Rear Heating, Ventilation and Air Conditioning (RHVAC) Control Module (412-02 Rear Climate Control, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT39 CHECK RTM (RADIO TRANSCEIVER MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the RTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RTM connector. Make sure that it is fully seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT40 CHECK SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector. Make sure that it is correctly installed and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles apply to this concern, INSTALL a new SCMG.
REFER TO: Driver Seat Multi-Contour Module [SCMG] (501-10A Front Seats, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT41 CHECK SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector. Make sure that it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists for this concern, INSTALL a new SCMH.
REFER TO: Driver Multi-Contour Seat Module [SCMG] (501-10A Front Seats, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT42 CHECK SCMJ (POWER FOLDING SEAT MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all SCMJ connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMJ connectors. Make sure they are installed and locked correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT43 CHECK SODL (LEFT BLIND SPOT DETECTION CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SODL connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODL connector. Make sure it is properly installed and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new SODL.
REFER TO: Object Detection Control Module (419-04 Side and Rear Vision, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT44 CHECK SODR (RIGHT BLIND SPOT DETECTION CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the SODR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SODR connector. Make sure it is properly installed and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new SODR.
REFER TO: Object Detection Control Module (419-04 Side and Rear Vision, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AT45 CHECK TRM (TRAILER MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent terminals/pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Connect the TRM connectors. Make sure that they are fully seated and locked.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new TRM.
REFER TO: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AU: NO POWER TO REMOTE DLC (DATA LINK CONNECTOR)

Normal Operation and Fault Symptoms

The scan tool is connected to the remote DLC for communication with the DIAG 1 and DIAG 2 circuits. The GWM translates diagnostic messages for HS-CAN1, HS-CAN2, HS-CAN3, HS-CAN4 and MS-CAN.

Possible Sources

Fuse
Wiring, terminals or connector
Diagnostic scan tool
Remote Downloadable Content

Visual Inspection and Pre-checks

Make sure that the BCM fuse 7 (10 A) is in good condition.

AU1 CHECK REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

NOTE: If the vehicle has one or more modules that become inoperative or exhibit observed symptoms when the scan tool is connected, this condition is likely caused by split ground terminals 4 and 5 at the remote DLC. An improperly grounded scan tool may corrupt network message traffic. Disconnect the diagnostic scan tool cable from the remote DLC.

Inspect remote DLC pins 4, 5 and 16 for spreading or damage using a flex probe with dimensions: width 1.5 mm x thickness 0.080 mm, Rotunda probe 300-08039 (purple).

Are there any problems with the fit of the terminals or any terminal damage at remote DLC pins 4, 5 and 16?

Yes

GO to AU2

AU2 CHECK GWM (GATEWAY MODULE A) C2431

Disconnect and inspect GWM connector C2431.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- spread, damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect GWM connector C2431. Make sure it is properly seated and latched.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

GO to AU3

No	The system is currently operating correctly. The concern may have been caused by module or scan tool connection. REFER to the root cause of any connector or pin issues.

AU3 CHECK REMOTE DLC (DATA LINK CONNECTOR) VOLTAGE SUPPLY TO OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to AU4

No	CONFIRM BCM fuse 7 (10 A) is in good condition. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to identify possible causes of the short circuit.

AU4 CHECK REMOTE DLC (DATA LINK CONNECTOR) GROUND CIRCUITS FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2122-4 Ground

C2122-5 Ground

Is the resistance less than 3 ohms?

Yes

CHECK the diagnostic scan tool for proper operation.

No	REPAIR the faulty circuit.

PINPOINT TEST AV: U3000:44, U3000:45, U3000:46, U3000:47 OR U3000:49

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
GWM U3000:44	Control Module: Data Memory Failure	Set in the GWM when an internal memory failure is detected.
GWM U3000:45	Control module: software memory failure	Set in the GWM when an internal fault is detected.
GWM U3000:46	Control module: calibration/parameter memory failure	Set in the GWM when an internal fault is detected.
GWM U3000:47	Control Module: Microcontroller Watchdog/Safety Failure	Set in the GWM when an internal fault is detected.
GWM U3000:49	Control Module: Internal Electronic Failure	Set in the GWM when an internal fault is detected.

Possible Sources

AV1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on.

Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using the diagnostic scan tool, perform the GWM self-test.

Is DTC U3000:44, U3000:45, U3000:46, U3000:47 or U3000:49 recorded?

Yes

INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

No	The system is currently operating correctly.

PINPOINT TEST AW: U2100:00

Normal Operation and Fault Symptoms

CHECK the vehicle service history for recent service actions related to this module.

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
GWM U2100:00	Initial Configuration Not Complete: No Sub Type Information	Sets due to incomplete or incorrect PMI procedures.

Possible Sources

Incomplete or incorrect PMI procedures.

AW1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the GWM self-test.

Is DTC U2100:00 recorded?

Yes

PROGRAM the initial configuration data from the PTS, following the scan tool instructions in the Module Programming > Initial section.

No	The system is currently operating correctly.

Diagnosis and Testing - Communication Network

Diagnostic Trouble Code (DTC) Chart

Diagnostic Trouble Code Chart

Symptom Chart

Symptom Chart: Communication Network

Symptom Chart

Pinpoint Tests

Normal Operation and Fault Symptoms

Possible Sources

2.3 L EcoBoost

3 L EcoBoost

3.3 L Duratec

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Normal Operation and Fault Symptoms

Possible Sources

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

with SYNC

Without SYNC

with SYNC

Without SYNC

with SYNC

Without SYNC

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms