Ford Escape: Module Communications 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).

Module	Trouble Code	Description	Action
GWM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO TO Pinpoint Test AR
GWM	U3000:44	Control Module: Data Memory Failure	GO TO Pinpoint Test AQ
GWM	U3000:45	Control module: software memory failure	GO TO Pinpoint Test AQ
GWM	U3000:46	Control module: calibration/parameter memory failure	GO TO Pinpoint Test AQ
GWM	U3000:47	Control Module: Microcontroller Watchdog/Safety Failure	GO TO Pinpoint Test AQ

Symptom Chart

Symptom Chart: Communication Network

Symptom Chart

Condition	Action
Vehicle does not crank with the diagnostic scan tool connected to the DLC and/or multiple warning indicators illuminate only when the diagnostic scan tool is connected to the DLC	GO to Pinpoint Test Access Point
No HS-CAN1 communication, all modules do not respond	GO to Pinpoint Test AK
No HS-CAN2 communication, all modules do not respond	GO to Pinpoint Test AL
No HS-CAN3 communication, all modules do not respond	GO to Pinpoint Test AM
No HS-CAN4 communication, all modules do not respond	GO to Pinpoint Test AN
No MS-CAN communication, all modules do not respond	GO to Pinpoint Test AO
PCM does not respond to the diagnostic scan tool	GO to Pinpoint Test A
SOBDM (Battery Charging Control Module [BCCM]) (PHEV) does not respond to the diagnostic scan tool	GO to Pinpoint Test B
SOBDMC (HEV/PHEV) does not respond to the diagnostic scan tool	GO to Pinpoint Test C
ABS module does not respond to the diagnostic scan tool	GO to Pinpoint Test D
RCM module does not respond to the diagnostic scan tool.	GO to Pinpoint Test E
OCS module does not respond to the diagnostic scan tool	GO to Pinpoint Test F
SCCM does not respond to the diagnostic scan tool	GO to Pinpoint Test G
GSM does not respond to the diagnostic scan tool	GO to Pinpoint Test H
All-wheel drive module does not respond to the diagnostic scan tool	GO to Pinpoint Test I
IPC does not respond to the diagnostic scan tool	GO to Pinpoint Test J
BCM does not respond to the diagnostic scan tool	GO to Pinpoint Test K
BCMC [BJB] (HEV/PHEV) does not respond to the diagnostic scan tool	GO to Pinpoint Test L
PACM (HEV/PHEV) does not respond to the diagnostic scan tool	GO to Pinpoint Test M
PAM does not respond to the diagnostic scan tool	GO to Pinpoint Test N
HVAC module does not respond to the diagnostic scan tool	GO TO Pinpoint Test O
ACCM (HEV/PHEV) does not respond to the diagnostic scan tool	GO to Pinpoint Test P
ACM does not respond to the diagnostic scan tool	GO to Pinpoint Test Q
IPMA does not respond to the diagnostic scan tool	GO TO Pinpoint Test R
APIM does not respond to the diagnostic scan tool	GO to Pinpoint Test S
DSP does not respond to the diagnostic scan tool	GO TO Pinpoint Test T
TCU does not respond to the diagnostic scan tool	GO to Pinpoint Test U
RTM does not respond to the diagnostic scan tool	GO to Pinpoint Test V
PSCM does not respond to the diagnostic scan tool	GO to Pinpoint Test W
DSM does not respond to the diagnostic scan tool	GO TO Pinpoint Test X
DDM does not respond to the diagnostic scan tool	GO to Pinpoint Test Y
PDM does not respond to the diagnostic scan tool	GO to Pinpoint Test Z
SODL does not respond to the diagnostic scan tool	GO TO Pinpoint Test AA
SODR does not respond to the diagnostic scan tool	GO to Pinpoint Test AB
RGTM does not respond to the diagnostic scan tool	GO to Pinpoint Test AC
TRM does not respond to the diagnostic scan tool	GO to Pinpoint Test advertisement
BECM (HEV/PHEV) does not respond to the diagnostic scan tool	GO TO Pinpoint Test AE
DCDC (HEV/PHEV) does not respond to the diagnostic scan tool	GO TO Pinpoint Test AF
HUD module does not respond to the diagnostic scan tool	GO to Pinpoint Test AG
BECMB does not respond to the diagnostic scan tool	GO to Pinpoint Test AH
WACM does not respond to the diagnostic scan tool	GO TO Pinpoint Test AI
All networks do not respond to the diagnostic scan tool	GO TO Pinpoint Test AJ
No power at DLC	GO to Pinpoint Test Access Point

Pinpoint Tests

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

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 23 for schematic and connector information. Refer to Wiring Diagrams Cell 24 for schematic and connector information. Refer to Wiring Diagrams Cell 25 for schematic and connector information.

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.

Is a "pass" or DTC indicated next to any of the following modules (if equipped): ACCM, APIM, all-wheel drive module, BCMC [BJB], BCM, BECM, BECMB, DCDC, PACM, SOBDM (battery charging 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 AK.

A2 REFER TO SECTION 303-14 PINPOINT TEST: UNABLE TO INITIATE SELF-TEST/NETWORK COMMUNICATION FAULT

Refer to Section 303-14 Pinpoint Test UNABLE TO INITIATE SELF-TEST/NETWORK COMMUNICATION FAULT.

Was Section 303-14 Pinpoint Test UNABLE TO INITIATE SELF-TEST/NETWORK COMMUNICATION FAULT performed?

Yes

GO to A3

Refer to Section 303-14 Electronic Engine Controls Pinpoint Test D&T: UNABLE TO INITIATE SELF-TEST/NETWORK COMMUNICATION FAULT. If equipped with 1.5L EcoBoost,
Refer to: Electronic Engine Controls (303-14A Electronic Engine Controls — 1.5 L EcoBoost (132 kW/180 L hp) — I3 (Y1), Diagnosis and Testing).
If equipped with 2.0L EcoBoost, REFER TO: Electronic Engine Controls (303-14B Electronic Engine Controls — 2 L EcoBoost (177 kW/240 L hp) — MI4, Diagnosis and Testing).
If equipped with 2.5L Duratec — Hybrid, REFER TO: Electronic Engine Controls (303-14C Electronic Engine Controls, Diagnosis and Testing).

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 the PCM C175B (1.5 L EcoBoost), C1551B (2 L EcoBoost) or C1381B (2.5 L Duratec — HEV/PHEV).

Action:
Click to display the connectors
1.5 L EcoBoost

Positive lead Measurement/Action Negative lead

C175B-67 C2431-20

C175B-66 C2431-19

Click to display the connectors
2 L EcoBoost

Positive lead Measurement/Action Negative lead

C1551B-67 C2431-20

C1551B-66 C2431-19

Click to display the connectors
2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C1381B-75 C2431-20

C1381B-76 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

VIN required to access Guided Routine (PCM)

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: SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 12 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

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 BJB fuse 46 (15A) is good.

B1 CHECK SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the SOBDM (battery charging control module [BCCM]) C3471A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3471A-H1 Ground

Is the voltage greater than 11 volts?

Yes

GO to B2

No	Verify BJB fuse 46 (15A) is good. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short circuit.

B2 CHECK SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) WAKE-UP CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3471A-C2 Ground

Is the voltage greater than 11 volts?

Yes

GO to B3

No	DIAGNOSE the SOBDMC alarm.

B3 CHECK SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) HOUSING 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 B4

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

B4 CHECK HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3471A-E2 C2431-20

C3471A-E1 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to B5

No	REPAIR the faulty circuit.

B5 CHECK SOBDM (SECONDARY ONBOARD DIAGNOSTIC MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) 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 articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If there are no service articles to resolve this concern, INSTALL a new SOBDM (Battery Charging Control Module [BCCM]). REFER to the appropriate 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 C: SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MODULE C) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 21 for schematic and connector information. Refer to Wiring Diagrams Cell 30 for schematic and connector information.

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 the BCMC (BJB) fuse 95 (15A), BJB fuses 5 (5A) and 26 (5A) are OK.

C1 CHECK THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) POWER SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect the SOBDMC C199A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C199A-4 Ground

C199A-34 Ground

Is the voltage greater than 11 volts?

Yes

GO to C2

No	CHECK the BJB fuse 5 (5A) or 26 (5A) 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.

C2 CHECK THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) POWER RELAY VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Connect a fused jumper wire:
Click to display connectors

Positive lead Measurement/Action Negative lead

C199A-14 Ground

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C199A-39 Ground

C199A-40 Ground

Is the voltage greater than 11 volts?

Yes

REMOVE the fusible link. GO to C3

REMOVE the fusible link. CHECK the BJB fuse 95 (15A) is OK. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit. If OK, PERFORM the SOBDMC Power Relay diagnostics. REFER to Section 303-14 Electric Drive Transmission D&T, Pinpoint Test, Diagnostic Trouble Codes: P0886 or P0887.
REFER TO: Electric Drive Control (303-14D Electric Drive Control, Diagnosis and Testing).

C3 CHECK THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) WAKE-UP CIRCUIT FOR AN OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C199A-13 Ground

Is the voltage greater than 11 volts?

Yes

GO TO C4

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

C4 CHECK THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C199A-9 Ground

C199A-10 Ground

Is the resistance less than 3 ohms?

Yes

GO to C5

No	REPAIR the faulty circuit.

C5 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C199A-1 C2431-20

C199A-11 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to C6

No	REPAIR the faulty circuit.

C6 CHECK THE SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITORING CONTROL) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all SOBDMC 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 SOBDMC 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: TSBs, GSBs, SSMs or FSAs. If a service document exists for this concern, STOP this test and FOLLOW the service document instructions. If no service information exists to resolve this concern, INSTALL a new SOBDMC.
REFER TO: Inverter System Controller [SOBDMC] (303-14D Electric Drive 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 D: ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 42 for schematic and connector information.

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 the BJB fuses 23 (5A), 28 (40A) and 29 (60A) are OK.

D1 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE POWER SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect the ABS Module C155 (1.5 L EcoBoost), C135A and C135B (2 L EcoBoost/2.5 L Duratec — HEV/PHEV).

The ignition is on.

Action:
Click to display the connectors
1.5 L EcoBoost

Positive lead Measurement/Action Negative lead

C155-1 Ground

C155-30 Ground

C155-35 Ground

Click to display the connectors
2 L EcoBoost/2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C135B-1 Ground

Click to display the connectors
2 L EcoBoost/2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C135A-14 Ground

C135A-41 Ground

Is the voltage greater than 11 volts?

Yes

GO to D2

No	CHECK the BJB fuses 23 (5A), 28 (40A) or 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.

D2 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors
1.5 L EcoBoost

Positive lead Measurement/Action Negative lead

C155-14 Ground

Click to display the connectors
2 L EcoBoost/2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C135A-1 Ground

Click to display the connectors
2 L EcoBoost/2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C135B-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to D3

No	REPAIR the faulty circuit.

D3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors
1.5 L EcoBoost

Positive lead Measurement/Action Negative lead

C155-42 C2431-18

C155-43 C2431-17

Click to display the connectors
2 L EcoBoost/2.5 L Duratec — HEV/PHEV

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 D4

No	REPAIR the faulty circuit.

D4 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE FOR CORRECT 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

VIN required to access Guided Routine (ABS)

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: RCM (RESTRAINTS CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Symptoms

The RCM communicates on the HS-CAN2 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
RCM

Visual Inspection and Pre-checks

Make sure the BCM fuses 10 (10A) and 15 (15A) are OK.

E1 CHECK THE RCM (RESTRAINT 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 the RCM C310A and C310B.

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

Yes

GO to E2

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

E2 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) COMMUNICATION NETWORK

The ignition is on.

Using a scan tool, perform the network test.

Does the BECMB pass the network test?

Yes

GO to E3

No	CHECK the module communication concern. GO to Pinpoint Test AH

E3 RETRIEVE the BECMB (BATTERY ENERGY CONTROL MODULE B) STORED DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the BECMB self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

CHECK the Diagnostic Trouble Codes (DTCs).
REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

GO to E4

E4 CHECK THE RCM (RESTRAINT CONTROL MODULE) POWER SUPPLY CIRCUITS 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 E5

No	CHECK the BCM fuses 10 (10A) or 15 (15A) are OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

E5 CHECK THE RCM (RESTRAINT 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 E6

No	REPAIR the RCM ground circuit, if necessary.

E6 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

CONNECT the GWM. GO to E7

No	REPAIR the faulty circuit.

E7 CHECK THE RCM (RESTRAINTS CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all RCM 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 RCM connectors. Make sure they are fully seated and locked.

Supplemental Restraint System (SRS) Upgrade.

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 address this concern, INSTALL a new RCM. Refer to the appropriate Removal and Installation procedure in Section 501-20B.

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: OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Symptoms

The OCS module communicates on the HS-CAN2 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
OCS Module

Visual Inspection and Pre-checks

Make sure the BCM fuses 10 (10A) and 15 (15A) are OK.

F1 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) NETWORK COMMUNICATION

The ignition is on.

Using a scan tool, perform the network test.

Does the BECMB pass the network test?

Yes

GO to F2

No	CHECK the module communication concern. GO to Pinpoint Test AH

F2 RETRIEVE THE BECMB (BATTERY ENERGY CONTROL MODULE B) STORED DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scan tool, perform the BECMB self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

CHECK the Diagnostic Trouble Codes (DTCs).
REFER TO: Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing).

GO to F3

F3 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Wait one minute.

Disconnect the OCS module C3159.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3159-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to F4

No	CHECK the BCM fuses 10 (10A) or 15 (15A) are OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.

F4 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3159-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to F5

No	REPAIR the circuit.

F5 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE OCS (OCCUPANT CLASSIFICATION SYSTEM) 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

C3159-2 C2431-18

C3159-3 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to F6

No	REPAIR the faulty circuit.

F6 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the OCS module 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 OCS module connector and the 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

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 address this concern, INSTALL a new OCS module.
REFER TO: Occupant Classification Sensor (OCS) (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 G: SCCM (STEERING COLUMN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams Cell 14 for component location and connector information. See Wiring Diagrams Cell 31 for component location and connector information.

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 22 (7.5A) is OK.

G1 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 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

CONNECT the GWM. GO to G3

GO to G2

G2 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 the 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 G5

No	REPAIR the faulty circuit.

G3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE 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 G4

No	CHECK the BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

G4 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

CONNECT the GWM. GO to G5

No	REPAIR the circuit.

G5 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect all SCCM 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 SCCM 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 articles address this concern, 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 H: GSM (GEAR SHIFT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams Cell 14 for component location and connector information. See Wiring Diagrams Cell 29 for component location and connector information. See Wiring Diagrams Cell 37 for component location and connector information.

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 21 (7.5A) is OK.

H1 CHECK THE GSM (GEARSHIFT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the GSM C3532.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3532-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to H2

No	CHECK the BCM fuse 21 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

H2 CHECK THE GSM (GEARSHIFT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3532-9 Ground

C3532-18 Ground

Is the resistance less than 3 ohms?

Yes

GO to H3

No	REPAIR the faulty circuit.

H3 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE GSM (GEARSHIFT 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

C3532-3 C2431-18

C3532-2 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to H4

No	REPAIR the faulty circuit.

H4 CHECK THE GSM (GEARSHIFT MODULE) FOR PROPER 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 concern, STOP this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GSM. With HF45 automatic transmission,
REFER TO: Gearshift Module (GSM) (307-05B Automatic Transmission - External Controls - HF45 Automatic Transmission, Removal and Installation).
With 8-speed automatic transmission - 8F35/8F40, REFER TO: Gearshift Module (GSM) (307-05A Automatic Transmission - External Controls - 8-Speed Automatic Transmission - 8F35/8F40, Removal and Installation).
With 8-speed automatic transmission - 8F24, REFER TO: Gearshift Module (GSM) (307-05A Automatic Transmission - External Controls - 8-Speed Automatic Transmission - 8F35/8F40, 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 I: AWD (ALL-WHEEL DRIVE) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 34 for schematic and connector information.

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 BJB fuse 54 (40A) is OK.

I1 CHECK THE FOUR-WHEEL DRIVE (4WD) MODULE VOLTAGE 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

For hybrid vehicles, GO to I2
For gasoline engine vehicles, GO to I3

No	CHECK the BJB fuse 54 (40A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

I2 CHECK THE AWD (ALL-WHEEL DRIVE) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3841-46 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT the battery negative cable. GO to I4.

No	REPAIR the circuit.

I3 CHECK THE AWD (ALL-WHEEL DRIVE) 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 I4

No	REPAIR the AWD module housing ground, if necessary.

I4 CHECK THE HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE AWD (ALL-WHEEL DRIVE) 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 I5.

No	REPAIR the faulty circuit.

I5 CHECK THE 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

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 resolves the concern, INSTALL a new AWD module. With the 1.5L EcoBoost engine (132 kW/180 L PS) – I3/2 L. EcoBoost (177 kW/240 L PS) – MI4. With the 2.5L Duratec engine – hybrid (121 kW/164 L PS) (BG).

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: IPC (INSTRUMENT PANEL CLUSTER) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 60 for schematic and connector information.

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 22 (7.5A) is OK.

J1 CHECK THE 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 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

RECONNECT the GWM. GO to J3.

GO to J2

J2 CHECK THE HS-CAN3 (HIGH SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect 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

RECONNECT all disconnected connectors. GO to J5.

No	REPAIR the faulty circuit.

J3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) VOLTAGE SUPPLY CIRCUIT

Disconnect the CCM 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 J4

No	CHECK the BCM fuse 22 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

J4 CHECK THE 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 battery negative cable. GO to J5.

No	REPAIR the circuit.

J5 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

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: BCM (BODY CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Symptoms

The BCM communicates on HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
BCM

Visual Inspection and Pre-checks

Make sure the BJB MEGA 3 (125A) high-current fuse and BJB fuse 1 (40A) are OK.

K1 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect BCM C2280A and C2280B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280A-1 Ground

Click to display connectors

Positive lead Measurement/Action Negative lead

C2280B-1 Ground

Is the voltage greater than 11 volts?

Yes

Reconnect BCM C2280A and C2280B. GO to K2.

No	CHECK the BJB MEGA 3 (125 A) high-current fuse or BJB fuse 1 (40 A) for being OK. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short.

K2 CHECK THE BCM (BODY CONTROL MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect the C2280F connector.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280F-8 Ground

C2280F-9 Ground

C2280F-24 Ground

Is the resistance less than 3 ohms?

Yes

GO to K3

No	REPAIR the faulty circuit.

K3 CHECK THE HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCM (BODY CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect the C2280E connector.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2280E-4 C2431-20

C2280E-5 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT all disconnected connectors. GO to K4.

No	REPAIR the faulty circuit.

K4 CHECK THE BCM (BODY CONTROL MODULE) FOR PROPER 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

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 address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

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

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

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

Make sure BJB fuses 26 (10A) and 102 (40A) are OK.

L1 CHECK THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect BCMC [BJB] C1002.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1002-21 Ground

C1002-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to L2

No	CHECK the BJB fuses 26 (10A) or 102 (40A) for being OK. If OK, repair the circuit in question. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short.

L2 CHECK THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1002-1 Ground

C1002-17 Ground

Is the resistance less than 3 ohms?

Yes

GO to L3

No	REPAIR the faulty circuit.

L3 CHECK THE HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1002-23 C2431-20

C1002-24 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to L4.

No	REPAIR the faulty circuit.

L4 CHECK THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] FOR PROPER OPERATION

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

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 resolves the concern, INSTALL a new BCMC [ BJB ].
REFER TO: Body Control Module C (BCMC) (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 M: PACM (PEDESTRIAN ALERT CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 66 for schematic and connector information.

Normal Operation and Fault Symptoms

The PACM communicates on HS-CAN1.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PAKM

Visual Inspection and Pre-checks

Make sure BCM fuse 3 (10A) is OK.

M1 CHECK THE PACM (PEDESTRIAN ALERT CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN 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 M2

No	CONFIRM the BCM fuse 3 (10A) is OK. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short.

M2 CHECK THE PACM (PEDESTRIAN ALERT CONTROL MODULE) GROUND CIRCUIT FOR AN 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 M3

No	REPAIR the circuit.

M3 CHECK THE HS-CAN1 (HIGH SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE PACM (PEDESTRIAN ALERT 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

C4525-2 C2431-20

C4525-3 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT the GWM. GO to M4.

No	REPAIR the faulty circuit.

M4 CHECK THE PACM (PEDESTRIAN ALERT CONTROL MODULE) FOR PROPER OPERATION

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 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 address this concern, 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 N: PAM (PARK ASSIST MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 145 for schematic and connector information.

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 8 (5A) is in good condition.

N1 CHECK THE PAM (PARK ASSIST MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the PAM C4226A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to N2

No	CONFIRM that BCM fuse 8 (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.

N2 CHECK THE PAM (PARK ASSIST MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-20 Ground

Is the resistance less than 3 ohms?

Yes

GO to N3

No	REPAIR the circuit.

N3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE PAM (PARK ASSIST MODULE) AND THE GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-9 C2431-18

C4226A-8 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to N4.

No	REPAIR the faulty circuit.

N4 CHECK THE PAM (PARK ASSIST MODULE) FOR PROPER OPERATION

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 OASIS for any applicable service information: 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 information applies to this condition, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Aid System - Vehicles With: Rear Park Aid 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 O: HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 54, for component and connector information. See Wiring Diagrams, Cell 55, for connector information.

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 21 (7.5A) is OK.

O1 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the 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 O3.

GO to O2

O2 CHECK THE MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE AND THE GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the HVAC Module C228A (EATC/DATC) or C2357A (EMTC).

Action:
Click to display the connectors
EATC/DATC

Positive lead Measurement/Action Negative lead

C228A-17 C2431-23

C228A-18 C2431-22

Click to display the connectors
EMTC

Positive lead Measurement/Action Negative lead

C2357A-17 C2431-23

C2357A-18 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to O5.

No	REPAIR the faulty circuit.

O3 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE POWER SUPPLY CIRCUIT FOR OPEN

Connect the battery negative cable.

The ignition is on.

Action:
Click to display the connectors
EATC/DATC

Positive lead Measurement/Action Negative lead

C228A-26 Ground

Click to display the connectors
EMTC

Positive lead Measurement/Action Negative lead

C2357A-26 Ground

Is the voltage greater than 11 volts?

Yes

GO to O4

No	CHECK the BCM fuse 21 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

O4 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE GROUND CIRCUIT FOR OPEN

Ignition OFF.

Action:
Click to display the connectors
EATC/DATC

Positive lead Measurement/Action Negative lead

C228A-1 Ground

Click to display the connectors
EMTC

Positive lead Measurement/Action Negative lead

C2357A-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to O5

No	REPAIR the circuit.

O5 CHECK THE 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 articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If there is no service article for this concern, INSTALL a new HVAC module. Refer to the appropriate Removal and Installation procedure in Section 412-00.

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: ACCM (AIR CONDITIONING CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 54, for component and connector information.

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

Make sure the BJB fuse 8 (15A) is in good condition.

P1 CHECK THE ACCM (AIR CONDITIONING CONTROL MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the 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 P2

No	CHECK the BDJB fuse 8 (15A) for integrity. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

P2 CHECK THE 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 P3

No	REPAIR the circuit.

P3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE ACCM (AIR CONDITIONING CONTROL MODULE) AND THE 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 the GWM. GO to P4.

No	REPAIR the faulty circuit.

P4 CHECK THE ACCM (AIR CONDITIONING CONTROL MODULE) FOR PROPER OPERATION

Ignition OFF.

Disconnect and inspect the ACCM 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 ACCM 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 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 articles resolve this concern, INSTALL a new ACCM.
REFER TO: Air Conditioning (A/C) Compressor – 2.5 L Duratec – Hybrid (121 kW/164 L PS) (BG) (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 Q: ACM (FRONT AUDIO CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 130, for component and connector information.

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

Verify that BCM fuse 23 (15A) is in good condition.

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

Ignition OFF.

Disconnect ACM C240A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C240A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to Q2

No	CONFIRM that BCM fuse 23 (15A) 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.

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

Ignition OFF.

Action:
Click to display the connectors

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

Positive lead Measurement/Action Negative lead

C240A-19 C2431-16

C240A-30 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the 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 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 OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service article resolves this concern, INSTALL a new ACM.
REFER TO: Front Audio Control Module (ACM) (415-00 Infotainment 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 R: IPMA (IMAGE PROCESSING MODULE A) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams Cell 14 for component location and connector information. See Wiring Diagrams Cell 31 for component location and connector information.

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 9 (5A) is in good condition.

R1 CHECK THE IPMA (IMAGE PROCESSING MODULE A) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the 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 R2

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.

R2 CHECK THE 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 R3

No	REPAIR the circuit.

R3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE IPMA (IMAGE PROCESSING MODULE A) AND THE 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 the GWM. GO to R4.

No	REPAIR the faulty circuit.

R4 CHECK THE IPMA (IMAGE PROCESSING MODULE A) FOR PROPER 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 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 articles address this concern, 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 S: APIM (SYNC MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 130, for component and connector information.

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

Verify that BCM fuse 17 (15A) is in good condition.

S1 CHECK THE APIM (SYNC MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the 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 S2

No	CONFIRM that BCM fuse 17 (15A) 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.

S2 CHECK THE APIM (SYNC 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 S3

No	REPAIR the circuit.

S3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE 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 S4

No	REPAIR the faulty circuit.

S4 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE 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 a TCU, GO to S5.
If the TCU is not installed, GO to S6.

No	REPAIR the faulty circuit.

S5 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE 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 S6.

No	REPAIR the faulty circuit.

S6 CHECK THE 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

VIN required to access Guided Routine (APIM)

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: DSP (DIGITAL SOUND PROCESSOR) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 130, for component and connector information.

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

Verify that BJB fuses 136 (20A) and 137 (20A) are in good condition.

T1 CHECK THE DSP (DIGITAL SOUND PROCESSOR) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the DSP C3154B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3154B-4 Ground

C3154B-8 Ground

Is the voltage greater than 11 volts?

Yes

GO to T2

No	CHECK the BJB fuse 136 (20A) or 137 (20A) for being OK. If OK, REPAIR the affected circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

T2 CHECK THE DSP (DIGITAL SOUND PROCESSOR) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3154B-1 Ground

C3154B-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to T3

No	REPAIR the faulty circuit.

T3 CHECK THE HS-CAN3 (HIGH SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE DSP (DIGITAL SOUND PROCESSOR) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Disconnect the DSP C3154A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3154A-1 C2431-16

C3154A-11 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to T4.

No	REPAIR the faulty circuit.

T4 CHECK THE DSP (DIGITAL SOUND PROCESSOR) 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 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 address this concern, INSTALL a new DSP.
REFER TO: Digital Sound Processor (DSP) (415-00 Information and Entertainment 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 U: TCU (TELEMATICS CONTROL UNIT) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

See Wiring Diagrams, Cell 14, for component and connector information. See Wiring Diagrams, Cell 130, for component and connector information.

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 that the BCM fuse 11 (5A) is OK.

U1 CHECK THE HS-CAN4 (HIGH SPEED CONTROLLER AREA NETWORK 4) FOR A TERMINATING RESISTANCE

Ignition OFF.

Disconnect the battery negative cable.

Disconnect the diagnostic scan tool cable from the 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 U3.

GO to U2

U2 CHECK THE HS-CAN4 (HIGH SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE TCU (TELEMATICS CONTROL UNIT) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect the TCU C2494A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2494A-8 C2431-7

C2494A-16 C2431-6

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to U5.

No	REPAIR the faulty circuit.

U3 CHECK THE TCU (TELEMATICS CONTROL UNIT) 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

C2494A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to U4

No	CONFIRM the BCM fuse 11 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

U4 CHECK THE TCU (TELEMATICS CONTROL UNIT) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2494A-13 Ground

Is the resistance less than 3 ohms?

Yes

GO to U5

No	REPAIR the circuit.

U5 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

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 address this concern, INSTALL a new TCU.
REFER TO: Telematics Control Unit (TCU) (415-00 Information and Entertainment 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 V: RTM (RADIO TRANSCEIVER MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 118 for schematic and connector information.

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

Verify that BCM fuse 17 (15A) is in good condition.

V1 CHECK THE RTM (RADIO TRANSCEIVER MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the RTM C9026.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C9026-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to Step 2

No	CONFIRM that BCM fuse 17 (15A) 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.

V2 CHECK THE RTM (RADIO TRANSCEIVER MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C9026-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to V3

No	REPAIR the circuit.

V3 CHECK THE MS-CAN (MEDIUM SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE RTM (RADIO TRANSCEIVER 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

C9026-4 C2431-23

C9026-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to V4.

No	REPAIR the faulty circuit.

V4 CHECK THE 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

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 address this concern, 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 W: PSCM (POWER STEERING CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 43 for schematic and connector information.

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

Make sure that the BJB MEGA 2 fuse (80A) and BJB fuse 22 (5A) are OK.

W1 CHECK THE PSCM (POWER STEERING CONTROL MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the PSCM C225A and C225B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C225A-1 Ground

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C225B-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to W2

No	CHECK the BJB MEGA 2 fuse (80A) or BJB fuse 22 (5A) for being OK. If OK, REPAIR the affected circuit. If not OK, REFER to the Wiring Diagrams Manual to determine the possible causes of the short circuit.

W2 CHECK THE PSCM (POWER STEERING CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C225B-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to W3

No	REPAIR the circuit.

W3 CHECK THE HS-CAN2 (HIGH SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE PSCM (POWER STEERING 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

C225A-2 C2431-18

C225A-3 C2431-17

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to W4.

No	REPAIR the faulty circuit.

W4 CHECK THE PSCM (POWER STEERING CONTROL MODULE) FOR PROPER 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

VIN is required to access the Guided Routine (EPAS)

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: DSM (DRIVER SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

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

Make sure that fuse BJB 30 (30A) is in good condition.

X1 CHECK THE DSM (DRIVER SEAT MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the CSM C341A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341A-10 Ground

Is the voltage greater than 11 volts?

Yes

GO to X2

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

X2 CHECK THE DSM (DRIVER SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the CSM C341B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341B-7 Ground

C341B-8 Ground

C341B-9 Ground

Is the resistance less than 3 ohms?

Yes

GO to X3

No	REPAIR the faulty circuit.

X3 CHECK THE MS-CAN (MEDIUM SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE DSM (DRIVER SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect the CSM C341C.

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C341C-2 C2431-23

C341C-3 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to X4.

No	REPAIR the faulty circuit.

X4 CHECK THE DSM (DRIVER 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.

PINPOINT TEST Y: DDM (DRIVER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 117 for schematic and connector information.

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

Make sure that the BCM fuse 14 (30A) is OK.

Y1 CHECK THE DDM (DRIVER DOOR MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the 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 Y2

No	CONFIRM the BCM fuse 14 (30A) is OK. 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 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 Y3

No	REPAIR the circuit.

Y3 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

RECONNECT GWM. GO TO Y4

No	REPAIR the faulty circuit.

Y4 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 applies to this condition, STOP this test and FOLLOW the service article instructions. If no service articles address this condition, INSTALL a new DDM module.
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 Z: PDM (PASSENGER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 117 for schematic and connector information.

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 BCM fuse 7 (30 A) is OK.

Z1 CHECK PDM (PASSENGER DOOR MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the 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 Z2

No	CHECK BCM fuse 7 (30 A) is OK. If OK, REPAIR the circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

Z2 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 Z3

No	REPAIR the circuit.

Z3 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

RECONNECT GWM. GO TO Z4

No	REPAIR the faulty circuit.

Z4 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 address this concern, INSTALL a new 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 AA: SODL (SIDE OBJECT DETECTION CONTROL MODULE, LH) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for component location and connector information. Refer to Wiring Diagrams Cell 146 for circuit and connector information.

Normal Operation and Fault Symptoms

SODL communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
PDM

Visual Inspection and Pre-checks

Check that BJB fuse 25 (10 A) is OK.

AA1 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 AA2

No	CHECK BJB fuse 25 (10 A) is OK. If OK, REPAIR the circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

AA2 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 AA3

No	REPAIR the circuit.

AA3 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

RECONNECT GWM. GO TO AA4

No	REPAIR the faulty circuit.

AA4 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 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 address this concern, INSTALL a new SODL.
REFER TO: Side Object Detection Control Module (SODCM) (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 AB: SODR (SIDE OBJECT DETECTION CONTROL MODULE, RH) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for component location and connector information. Refer to Wiring Diagrams Cell 146 for circuit and connector information.

Normal Operation and Fault Symptoms

SODR communicates via MS-CAN.

Possible Sources

Fuse
Wiring, Terminals and Connectors
DDM

Visual Inspection and Pre-checks

Check that BJB fuse 25 (10 A) is OK.

AB1 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 AB2

No	CHECK BJB fuse 25 (10 A) is OK. If OK, REPAIR the circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

AB2 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 AB3

No	REPAIR the faulty circuit.

AB3 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

RECONNECT GWM. GO TO AB4

No	REPAIR the faulty circuit.

AB4 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 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 address this concern, INSTALL a new SODR.
REFER TO: Side Object Detection Control Module (SODCM) (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 AC: RGTM (REAR GATE MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for component location and connector information. Refer to Wiring Diagrams Cell 109 for circuit 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

Check that BJB fuse 41 (30 A) and BCM fuse 11 (5 A) are OK.

AC1 CHECK RGTM (REAR GATE TRUNK MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect the 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 AC2

No	CHECK BJB fuse 41 (30 A) or BCM fuse 11 (5 A) is OK. If OK, REPAIR the faulty circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

AC2 CHECK RGTM (REAR GATE TRUNK MODULE) GROUND CIRCUIT FOR 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 AC3

No	REPAIR the circuit.

AC3 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) CIRCUITS BETWEEN RGTM (REAR GATE TRUNK MODULE) AND GWM (GATEWAY MODULE A) FOR 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

RECONNECT GWM. GO TO AC4

No	REPAIR the faulty circuit.

AC4 CHECK RGTM (REAR GATE TRUNK MODULE) 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

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 address this concern, INSTALL a new RGTM.
REFER to: Rear Gate Liftgate Module (RGTM) (501-03 Body Closures, 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: TRM (TRAILER MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for component location and connector information. Refer to Wiring Diagrams Cell 95 for circuit and connector information.

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 that fuse BJB 91 (40A) is in good condition.

AD1 CHECK TRM (TRAILER MODULE) POWER SUPPLY CIRCUIT FOR OPEN

Ignition OFF.

Disconnect TRM C425A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C425A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AD2

No	CHECK BJB fuse 91 (40 A) is OK. If OK, REPAIR the circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

AD2 CHECK TRM (TRAILER MODULE) GROUND CIRCUIT FOR OPEN

Ignition OFF.

Disconnect TRM C425B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C425B-1 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 TRM (TRAILER MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C425B-3 C2431-23

C425B-2 C2431-22

Is the resistance less than 3 ohms?

Yes

RECONNECT GWM. GO TO AD4

No	REPAIR the faulty circuit.

AD4 CHECK TRM (TRAILER MODULE) 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 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 address this concern, 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 AE: BECM (BATTERY ENERGY CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 12 for component location and connector information. Refer to Wiring Diagrams Cell 21 for circuit 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

Check that BJB fuse 146 (5 A) is OK.

AE1 CHECK HIGH-VOLTAGE BATTERY 12 V POWER SUPPLY CIRCUITS FOR OPEN

Ignition OFF.

Disconnect the high-voltage battery C3733 (HEV) or C3732 (PHEV).

The ignition is on.

Action:
Click to display the connectors
HEV

Positive lead Measurement/Action Negative lead

C3733-5 Ground

C3733-6 Ground

Click to display the connectors
PHEV

Positive lead Measurement/Action Negative lead

C3732-5 Ground

C3732-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to AE2

No	CHECK BJB fuse 146 (5 A) is OK. If OK, REPAIR the faulty circuit. If not OK, REFER to Wiring Diagrams to identify possible causes of the short circuit.

AE2 CHECK HIGH-VOLTAGE BATTERY WAKE-UP CIRCUIT

Action:
Click to display the connectors
HEV

Positive lead Measurement/Action Negative lead

C3733-1 Ground

Click to display the connectors
PHEV

Positive lead Measurement/Action Negative lead

C3732-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AE3

No	DIAGNOSE the SOBDMC alarm.

AE3 CHECK HIGH-VOLTAGE BATTERY 12 V GROUND CIRCUITS FOR OPEN

Ignition OFF.

Action:
Click to display the connectors
HEV

Positive lead Measurement/Action Negative lead

C3733-25 Ground

C3733-26 Ground

Click to display the connectors
PHEV

Positive lead Measurement/Action Negative lead

C3732-25 Ground

C3732-26 Ground

Is the resistance less than 3 ohms?

Yes

GO to AE4.

No	REPAIR the faulty circuit.

AE4 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN HIGH-VOLTAGE BATTERY AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors
HEV

Positive lead Measurement/Action Negative lead

C3733-16 C2431-20

C3733-15 C2431-19

Click to display the connectors
PHEV

Positive lead Measurement/Action Negative lead

C3732-16 C2431-20

C3732-15 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT GWM. GO TO AE5

No	REPAIR the faulty circuit.

AE5 CHECK HIGH-VOLTAGE BATTERY 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 article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article resolves this concern, INSTALL a new high-voltage battery. Refer to the appropriate 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 AT: DC-DC (DC/DC CONVERTER CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 12 for schematic and connector information.

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 BJB MEGA 4 (300 A) high-current fuse and the BJB fuse 159 (15 A) are in good condition.
Diagnose all diagnostic trouble codes (DTCs) stored in the SOBDMC first. Diagnostic trouble codes (DTCs) stored in this module may cause the vehicle to disable the DCDC module wake-up circuit, leaving the DCDC inoperative.

AF1 CHECK THE DCDC (DC-TO-DC CONVERTER CONTROL MODULE) POWER SUPPLY CIRCUIT FOR VOLTAGE

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 AF2.

No	CHECK the BJB MEGA 4 (300 A) high-current fuse or BJB fuse 159 (15 A) for good condition. If OK, REPAIR the faulty circuit. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the circuit short to ground.

AF2 CHECK THE DCDC (DC-TO-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 AF3.

No	DIAGNOSE the SOBDMC alarm.

AF3 CHECK THE DCDC (DC-TO-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 AF4

No	REPAIR the DCDC ground as necessary.

AF4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE DCDC (DC-TO-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 AF5.

No	REPAIR the faulty circuit.

AF5 CHECK THE DCDC (DC-TO-DC CONVERTER CONTROL MODULE) 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 articles: TSB, GSB, SSM or FSA. If a service article exists for this symptom, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, INSTALL a new DCDC.
REFER TO: Direct Current (DC/DC) Converter Control 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 AG: HUD (HEAD-UP DISPLAY) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 60 for schematic and connector information.

Normal Operation and Fault Symptoms

The HUD module communicates on the HS-CAN3 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
HUD

Visual Inspection and Pre-checks

Make sure that the BCM fuse 12 (10 A) is in good condition.

AG1 CHECK THE HUD (HEAD-UP DISPLAY) MODULE POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the HUD module C2395.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2395-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to AG2

No	CONFIRM the BCM fuse 12 (10 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.

AG2 CHECK THE HUD (HEAD-UP DISPLAY) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2395-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AG3

No	REPAIR the circuit.

AG3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE HUD (HEAD-UP DISPLAY) 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

C2395-2 C2431-16

C2395-3 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AG4.

No	REPAIR the faulty circuit.

AG4 CHECK THE HUD (HEAD-UP DISPLAY) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the HUD 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 HUD 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

CHECK OASIS for any applicable service information: 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 information applies to this condition, INSTALL a new HUD module.
REFER TO: Heads-Up Display (HUD) Module (419-03C Collision Warning and Avoidance 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 AH: BECMB (BATTERY ENERGY CONTROL MODULE B) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Symptoms

The BECMB communicates on the HS-CAN1 bus.

Possible Sources

Fuse
Wiring, Terminals and Connectors
BCM

Visual Inspection and Pre-checks

Make sure the BCM fuses 10 (10A) and 15 (15A) are OK.

AH1 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) POWER SUPPLY CIRCUIT FOR AN OPEN

Disconnect BECMB C2518.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2518-11 Ground

C2518-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to AH2

No	CONFIRM the BCM fuses 10 (10 A) or 15 (15 A) are in good condition. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams to determine the possible causes of the short circuit.

AH2 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2518-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AH3

No	REPAIR the circuit.

AH3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BECMB (BATTERY ENERGY CONTROL MODULE B) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2518-8 C2431-20

C2518-2 C2431-19

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AH4.

No	REPAIR the faulty circuit.

AH4 CHECK THE BECMB (BATTERY ENERGY CONTROL MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the BECMB 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 BECMB 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 article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article resolves this concern, INSTALL a new BECMB.
REFER TO: Battery Energy Control Module B (BECMB) (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 AI: WACM (WIRELESS ACCESSORY CHARGING MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 44 for connector information.

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

Make sure that the BCM fuse 18 (7.5 A) is in good condition.

AI1 CHECK THE WACM (WIRELESS ACCESSORY CHARGER MODULE) POWER SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect C390 at the WACM.

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 AI2

No	CONFIRM the BCM fuse 18 (7.5 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.

AI2 CHECK THE WACM (WIRELESS ACCESSORY CHARGER MODULE) GROUND CIRCUIT FOR AN 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 AI3

No	REPAIR the circuit.

AI3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE WACM (WIRELESS ACCESSORY CHARGER 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

C390-8 C2431-16

C390-7 C2431-15

Is the resistance less than 3 ohms?

Yes

CONNECT the GWM. GO to AI4.

No	REPAIR the faulty circuit.

AI4 CHECK THE WACM (WIRELESS ACCESSORY CHARGER 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

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: ALL MODULES 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

Visual Inspection and Pre-checks

Make sure that BCM fuse 22 (7.5 A) and BJB fuse 186 (10 A) are OK.

AJ1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 3, 4, 5, 6, 11, 14 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any concerns with the seating or damage of DLC pins 3, 4, 5, 6, 11, 14 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AJ2

AJ2 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 AJ3

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.

AJ3 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 AJ4

No	CHECK BCM fuse 22 (7.5 A) and BJB fuse 186 (10 A) are OK. If OK, REPAIR the faulty circuit. If not OK, REFER to the wiring diagrams to determine the possible causes of a short circuit in the circuit.

AJ4 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 AJ5

No	REPAIR the faulty circuit.

AJ5 CHECK CONTACT RESISTANCE ON DIAGRAM 1, COMPONENT SIDE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-6 (component side) C251-14 (component side)

Is the resistance between 108 and 132 ohms?

Yes

GO to AJ6

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

AJ6 CHECK PAD RESISTANCE ON DIAGRAM 2, COMPONENT SIDE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-3 (component side) C251-11 (component side)

Is the resistance between 108 and 132 ohms?

Yes

Reconnect the disconnected connector and check for normal operation. If the concern is still present, GO to AJ7.

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

AJ7 CHECK 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AK: 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

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

Possible Sources

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

AK1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect pins 4, 5, 6, 14 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any concerns with the seating or damage of DLC pins 4, 5, 6, 14 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AK2

AK2 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 AK3

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.

AK3 CHECK NETWORK CIRCUIT END-TO-END RESISTANCE AS SHOWN IN FIGURE 1.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-6 C251-14

Is the resistance between 108 and 132 ohms?

Yes

GO to AK4

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

AK4 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) LOAD 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 AK5

No	If the resistance is greater than 132 ohms, GO to AK8. If the resistance is less than 108 ohms, RECONNECT all disconnected connectors. GO to AK9.

AK5 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 AK6

No	GO to AK10.

AK6 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.

GO to AK7

AK7 CHECK GWM (GATEWAY MODULE A) HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) LOAD 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 AK38.

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

AK8 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) CIRCUITS BETWEEN PCM (POWERTRAIN CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the PCM C175B (1.5 L EcoBoost), C1551B (2 L EcoBoost) or C1381B (2.5 L Duratec — HEV/PHEV).

Action:
Click to display the connectors
1.5 L EcoBoost

Positive lead Measurement/Action Negative lead

C175B-67 C2431-20

C175B-66 C2431-19

Click to display the connectors
2 L EcoBoost

Positive lead Measurement/Action Negative lead

C1551B-67 C2431-20

C1551B-66 C2431-19

Click to display the connectors
2.5 L Duratec — HEV/PHEV

Positive lead Measurement/Action Negative lead

C1381B-75 C2431-20

C1381B-76 C2431-19

Is the resistance less than 3 ohms?

Yes

RECONNECT all disconnected connectors. GO to AK11.

No	REPAIR the faulty circuit.

AK9 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER NETWORK 1) (-) CIRCUITS FOR SHORT TOGETHER 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 (if equipped)
- All-Wheel Drive Module C3841 (if equipped)
- BECM C2280E
- BCMC (BJB) C1002 (HEV/PHEV)
- High-Voltage Battery C3733 (HEV) or C3732 (PHEV)
- BECMB C2518
- DCDC C1457B (HEV/PHEV)
- PACM C4525 (HEV/PHEV)
- PCM C175B (1.5 L EcoBoost), C1551B (2 L EcoBoost) or C1381B (2.5 L Duratec — HEV/PHEV)
- SOBDM (Battery Charge Control Module [BCCM]) (PHEV) C3471A
- SOBDMC C199A (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 AK30.
For APIM, GO to AK31.
For All-Wheel Drive Module, GO to AK32.
For BCM, GO to AK33.
For BCMC (BJB), GO to AK34.
For High-Voltage Battery, GO to AK35.
For BECMB, GO to AK36.
For DCDC, GO to AK37.
For PACM, GO to AK39.
For PCM, GO to AK40.
For SOBDM (Battery Charge Control Module [BCCM]) (PHEV), GO to AK41.
For SOBDMC, GO to AK42.

No	REPAIR the faulty circuit. RECONNECT all modules.

AK10 CHECK HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA 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 (if equipped)
- All-Wheel Drive Module C3841 (if equipped)
- BECM C2280E
- BCMC (BJB) C1002 (HEV/PHEV)
- High-Voltage Battery C3733 (HEV) or C3732 (PHEV)
- BECMB C2518
- DCDC C1457B (HEV/PHEV)
- PACM C4525 (HEV/PHEV)
- PCM C175B (1.5 L EcoBoost), C1551B (2 L EcoBoost) or C1381B (2.5 L Duratec — HEV/PHEV)
- SOBDM (Battery Charge Control Module [BCCM]) (PHEV) C3471A
- SOBDMC C199A (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.

AK11 CHECK FOR RESTORED COMMUNICATION WITH PCM (POWERTRAIN CONTROL MODULE) INCOMPLETE

Remove BJB fuses 6 (15A) and 24 (10A).

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuses. GO TO Pinpoint Test A.

No	INSTALL the removed fuses. GO TO AK12.

AK12 CHECK VEHICLE EQUIPMENT - SOBDMC (SECONDARY ONBOARD DIAGNOSTIC MODULE CONTROLLER C) AND BCMC (BODY CONTROL MODULE CONTROLLER C) (BJB)

Inspect the vehicle for SOBDMC and BCMC (BJB).

Is the vehicle equipped with SOBDMC and BCMC (BJB)?

Yes

GO TO AK13

No	GO TO AK15

AK13 CHECK FOR RESTORED COMMUNICATION WITH SOBDMC (SECONDARY ONBOARD DIAGNOSTIC MODULE CONTROLLER C) AND BCMC (BODY CONTROL MODULE CONTROLLER C) (BJB) INVALID

Remove BCMC (BJB) fuses 95 (15A), BJB fuses 5 (5A), 26 (5A) and 102 (40A).

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 AK14

No	INSTALL the removed fuses. GO TO AK15

AK14 CHECK FOR RESTORED COMMUNICATION WITH BCMC (BODY CONTROL MODULE CONTROLLER C) (BJB) DISCONNECTED

Disconnect BCMC (BJB) C1002.

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 L.

No	CONNECT the module. GO TO Pinpoint Test C.

AK15 CHECK VEHICLE EQUIPMENT - APIM (SYNC MODULE)

Inspect the vehicle for APIM.

Is the vehicle equipped with APIM?

Yes

GO TO AK16

No	GO TO AK17

AK16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH APIM (SYNC MODULE) INCOMPLETE

Remove BCM fuse 17 (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 S.

No	INSTALL the removed fuse. GO TO AK17.

AK17 CHECK VEHICLE EQUIPMENT - DCDC (DC/DC CONVERTER CONTROL MODULE)

Inspect the vehicle for DCDC.

Is the vehicle equipped with DCDC?

Yes

GO TO AK18

No	GO TO AK19

AK18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH DCDC (DC/DC CONVERTER CONTROL MODULE) INCOMPLETE

Disconnect high-current BJB MEGA fuse 4 (300A) and 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 AF.

No	INSTALL the removed fuses. GO TO AK19.

AK19 CHECK VEHICLE EQUIPMENT - ACCM (AIR CONDITIONING CONTROL MODULE)

Inspect the vehicle for ACCM.

Is the vehicle equipped with ACCM?

Yes

GO TO AK20

No	GO TO AK21

AK20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH ACCM (AIR CONDITIONING CONTROL MODULE) INCOMPLETE

Disconnect Fuse BJB 8 (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 P.

No	INSTALL the removed fuse. GO TO AK21.

AK21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH BCM (BODY CONTROL MODULE) INCOMPLETE

Disconnect the C2280E connector.

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 AK22.

AK22 CHECK VEHICLE EQUIPMENT - FOUR-WHEEL DRIVE (4WD) MODULE

Inspect the vehicle for a four-wheel drive module.

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

Yes

GO TO AK23

No	GO TO AK24

AK23 CHECK FOR RESTORED NETWORK COMMUNICATION WITH FOUR-WHEEL DRIVE (4WD) MODULE DISCONNECTED

Remove BJB fuse 54 (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 I.

No	INSTALL the removed fuse. GO TO AK24.

AK24 CHECK VEHICLE EQUIPMENT - BECM (BATTERY ENERGY CONTROL MODULE)

Inspect the vehicle for BECM.

Is the vehicle equipped with BECM?

Yes

GO TO AK25

No	GO TO AK27

AK25 CHECK FOR RESTORED NETWORK COMMUNICATION WITH BECM (BATTERY ENERGY CONTROL MODULE) INCOMPLETE

Remove BJB fuse 146 (5A).

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 AE.

No	INSTALL the removed fuse. For PHEV, GO TO AK26. For HEV, GO TO AK27.

AK26 CHECK FOR RESTORED NETWORK COMMUNICATION WITH SOBDMC (SECONDARY ONBOARD DIAGNOSTIC MODULE CONTROLLER A) (BATTERY CHARGING CONTROL MODULE [BCCM]) DISCONNECTED

Remove 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 B.

No	INSTALL the removed fuse. GO TO AK27.

AK27 CHECK FOR RESTORED NETWORK COMMUNICATION WITH BECMB (BATTERY ENERGY CONTROL MODULE B) INCOMPLETE

Remove BCM fuses 10 (10A) and 15 (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 AH.

No	INSTALL the removed fuses. GO TO AK28.

AK28 CHECK VEHICLE EQUIPMENT - PACM (PEDESTRIAN ALERT CONTROL MODULE)

Inspect the vehicle for PACKAGE.

Is the vehicle equipped with the PACK?

Yes

GO to AK29

No	HS-CAN1 tests within specification. The concern may have been caused by a communication module. RECONNECT 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.

AK29 CHECK PACM (PEDESTRIAN ALERT CONTROL MODULE) COMMUNICATION NETWORK RESTORATION INCOMPLETE

Disconnect BCM Fuse 3 (10A).

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 M

No	INSTALL the removed fuse. HS-CAN1 tests within specification. The concern may have been caused by a communication module. RECONNECT 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.

AK30 CHECK ACCM (AIR CONDITIONING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ACCM 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 ACCM 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.

AK31 CHECK APIM (SYNC MODULE) 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

VIN required to access Guided Routine (APIM)

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.

AK32 CHECK ON-DEMAND (ALL-WHEEL DRIVE) MODULE 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 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 resolves the concern, INSTALL a new AWD module. With the 1.5L EcoBoost engine (132 kW/180 L PS) – I3/2 L. EcoBoost (177 kW/240 L PS) – MI4. With the 2.5L Duratec engine – hybrid (121 kW/164 L PS) (BG).

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.

AK33 CHECK BCM (BODY CONTROL MODULE) 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

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.

AK34 CHECK BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] 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

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 resolves the concern, INSTALL a new BCMC [ BJB ].
REFER TO: Body Control Module C (BCMC) (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.

AK35 CHECK HIGH-VOLTAGE BATTERY 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 article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article resolves this concern, INSTALL a new high-voltage battery. Refer to the appropriate 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.

AK36 CHECK BECMB (BATTERY ENERGY CONTROL MODULE B) OPERATION

Ignition OFF.

Disconnect and inspect the BECMB 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 BECMB 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 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 resolves this concern, INSTALL a new BECMB.
REFER TO: Battery Energy Control Module B (BECMB) (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.

AK37 CHECK DCDC (DC-TO-DC CONVERTER CONTROL MODULE) 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.

AK38 CHECK 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AK39 CHECK PACM (PEDESTRIAN ALERT CONTROL MODULE) 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

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 address this concern, 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.

AK40 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

VIN required to access Guided Routine (PCM)

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.

AK41 CHECK SOBDM (SECONDARY ON-BOARD DIAGNOSTIC MONITOR MODULE A) (BATTERY CHARGING CONTROL MODULE [BCCM]) 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 articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If there are no service articles to resolve this concern, INSTALL a new SOBDM (Battery Charging Control Module [BCCM]). REFER to the appropriate 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.

AK42 CHECK SOBDMC (SECONDARY ON-BOARD DIAGNOSTIC MONITOR 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 AL: 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 diagnostic scan tool through the DLC DIAG 2 circuits. REFER TO: Communication Network - System Operation and Component Description (418-00 Communication Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
ABS Module
GSM (if equipped)
GWM
IPMA (if equipped)
OCS Module
PAM (if equipped)
PSCM
RCM
SCCM

AL1 INSPECT 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any fitment or damage concerns with DLC pins 3, 4, 5, 11 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AL2

AL2 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 AL3

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.

AL3 CHECK THE NETWORK CIRCUIT TERMINATING RESISTANCE AS SHOWN IN FIGURE 2.

Disconnect the battery negative cable.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-3 C251-11

Is the resistance between 108 and 132 ohms?

Yes

GO to AL4

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

AL4 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) LOAD 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 AL5

No	If the resistance is greater than 132 Ohms, GO to AL8. If the resistance is less than 108 Ohms, RECONNECT all disconnected connectors. GO to AL9

AL5 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR 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 AL6

No	GO to AL10

AL6 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR 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.

GO to AL7

AL7 CHECK GWM (GATEWAY MODULE A) HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) LOAD 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 AL25

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

AL8 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN SCCM (STEERING COLUMN CONTROL MODULE) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the 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 AL11

No	REPAIR the faulty circuit.

AL9 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR SHORT TOGETHER WITH 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 C155 (1.5 L EcoBoost) or C135A (2 L EcoBoost/2.5 L Duratec — HEV/PHEV)
- GSM C3532 (if equipped)
- IPMA C9039 (if equipped)
- OCS module C3159
- PAM C4226A (if equipped)
- PSCM C225A
- RCM C310B
- SCCM C226A

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

Yes

For ABS module GO to AL23
For GSM GO to AL24.
For IPMA GO to AL26
For OCS module GO to AL27
For PAM GO to AL28.
For PSCM GO to AL29.
For RCM GO to AL30.
For SCCM GO to AL31.

No	REPAIR the faulty circuit. RECONNECT all modules.

AL10 CHECK HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR SHORT TO GROUND WITH 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 C155 (1.5 L EcoBoost) or C135A (2 L EcoBoost/2.5 L Duratec — HEV/PHEV)
- GSM C3532 (if equipped)
- IPMA C9039 (if equipped)
- OCS module C3159
- PAM C4226A (if equipped)
- PSCM C225A
- RCM C310B
- SCCM C226A

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

Yes

For ABS module GO to AL23
For GSM GO to AL24.
For IPMA GO to AL26
For OCS module GO to AL27
For PAM GO to AL28.
For PSCM GO to AL29.
For RCM GO to AL30.
For SCCM GO to AL31.

No	REPAIR the faulty circuit. RECONNECT all modules.

AL11 CHECK COMMUNICATION NETWORK RESTORATION WITH SCCM (STEERING COLUMN CONTROL MODULE) DISCONNECTED

Disconnect the SCCM C226A.

Using a scan tool, perform the network test.

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

Yes

RECONNECT the module. GO to Pinpoint Test G

No	RECONNECT the module. GO to AL12

AL12 CHECK COMMUNICATION NETWORK RESTORATION WITH ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DISCONNECTED

Disconnect BJB Fuses 23 (5A), 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 D

No	INSTALL the removed fuses. GO to AL13

AL13 CHECK COMMUNICATION NETWORK RESTORATION WITH PSCM (POWER STEERING CONTROL MODULE) INCOMPLETE

Disconnect BJB MEGA High Current Fuse 2 (80A) and BJB Fuse 22 (5A).

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 W

No	INSTALL the removed fuses. GO to AL14

AL14 CHECK VEHICLE EQUIPMENT — OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE

Inspect the vehicle for the presence of an OCS module.

Is the vehicle equipped with an OCS module?

Yes

GO to AL15

No	GO to AL16

AL15 CHECK FOR RESTORED COMMUNICATION WITH OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DISABLED

Disconnect the OCS module C3159.

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	CONNECT the module. GO to AL16

AL16 CHECK VEHICLE EQUIPMENT — GSM (GEAR SHIFT MODULE)

Inspect the vehicle for the presence of a GSM.

Is the vehicle equipped with a GSM?

Yes

GO to AL17

No	GO to AL18

AL17 CHECK FOR RESTORED COMMUNICATION WITH GSM (GEAR SHIFT MODULE) INCOMPLETE

Disconnect BCM Fuse 21 (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 H

No	INSTALL the removed fuse. GO to AL18

AL18 CHECK VEHICLE EQUIPMENT — PAM (PARK ASSIST MODULE)

Inspect the vehicle for the presence of a PAM.

Is the vehicle equipped with a PAM?

Yes

GO to AL19

No	GO to AL20

AL19 CHECK FOR RESTORED COMMUNICATION WITH PAM (PARK ASSIST MODULE) INCOMPLETE

Disconnect BCM Fuse 8 (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 N

No	INSTALL the removed fuse. GO to AL20

AL20 CHECK VEHICLE EQUIPMENT — IPMA (IMAGE PROCESSING MODULE A)

Inspect the vehicle for the presence of IPMA.

Is the vehicle equipped with IPMA?

Yes

GO to AL21

No	GO to AL22

AL21 CHECK FOR RESTORED COMMUNICATION WITH IPMA (IMAGE PROCESSING MODULE A) INCOMPLETE

Disconnect BCM Fuse 9 (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 AL22

AL22 CHECK FOR RESTORED COMMUNICATION WITH RCM (RESTRAINTS CONTROL MODULE) DISABLED

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 E

No	CONNECT the module. HS-CAN2 tests within specification. The concern may have been caused by the communication module. RECONNECT 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.

AL23 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

VIN required to access Guided Routine (ABS)

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.

AL24 CHECK 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

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 address this concern, INSTALL a new GSM. With HF45 automatic transmission,
REFER TO: Gearshift Module (GSM) (307-05B Automatic Transmission - External Controls - HF45 Automatic Transmission, Removal and Installation).
With 8-speed automatic transmission - 8F35/8F40, REFER TO: Gearshift Module (GSM) (307-05A Automatic Transmission - External Controls - 8-Speed Automatic Transmission - 8F35/8F40, Removal and Installation).
With 8-speed automatic transmission - 8F24, REFER TO: Gearshift Module (GSM) (307-05A Automatic Transmission - External Controls - 8-Speed Automatic Transmission - 8F35/8F40, 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.

AL25 CHECK 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AL26 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 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 articles address this concern, 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.

AL27 CHECK OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the OCS module 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 OCS module connector and the 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

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 address this concern, INSTALL a new OCS module.
REFER TO: Occupant Classification Sensor (OCS) (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.

AL28 CHECK 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

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.

AL29 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

VIN is required to access the Guided Routine (EPAS)

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.

AL30 CHECK 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

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 address this concern, INSTALL a new RCM. Refer to the appropriate Removal and Installation procedure in Section 501-20B.

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.

AL31 CHECK 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

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 address this concern, 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 AM: NO HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) COMMUNICATION, ALL MODULES DO NOT RESPOND

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

Normal Operation and Fault Symptoms

Diagnostic messages sent/received between the diagnostic scanner and HS-CAN3 modules are accessed through the DIAG 2 circuits on the Supplement. REFER to: Communication Network – System Operation and Component Description (418-00 Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
ACM
APIM (if equipped)
DSP (if equipped)
GWM
HUD Module (if equipped)
PCM
WACM (if equipped)

AM1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any fitment or damage concerns with DLC pins 3, 4, 5, 11 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AM2

AM2 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 AM3

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.

AM3 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 AM4

No	GO to Pinpoint Test AL

AM4 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (IPC (INSTRUMENT PANEL CLUSTER)) TERMINATING 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 AM5

No	If the resistance is greater than 132 ohms, GO to AM8. If the resistance is less than 108 ohms, RECONNECT all disconnected connectors. GO to AM9

AM5 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the battery negative cable.

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 AM6

No	GO to AM10

AM6 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A 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 AM7

AM7 CHECK GWM (GATEWAY MODULE A) HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) LOAD 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 AM27

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

AM8 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN IPC (INSTRUMENT PANEL CLUSTER) AND GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect the CCM 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

RECONNECT all disconnected connectors. GO to AM11

No	REPAIR the faulty circuit.

AM9 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A 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.
- ACM C240A
- APIM C2383A (if equipped)
- DSP C3154A (if equipped)
- HUD module C2395 (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 ACM, GO to AM21.
For APIM, GO to AM22.
For DSP, GO to AM23.
For HUD module, GO to AM24.
For IPC, GO to AM25.
For WACM, GO to AM26.

No	REPAIR the affected circuits. CONNECT all modules.

AM10 CHECK HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A 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.
- ACM C240A
- APIM C2383A (if equipped)
- DSP C3154A (if equipped)
- HUD module C2395 (if equipped)
- IPC C220
- WACM C390 (if equipped)

Are the resistances greater than 1000 Ohms?

Yes

For ACM, GO to AM21.
For APIM, GO to AM22.
For DSP, GO to AM23.
For HUD module, GO to AM24.
For IPC, GO to AM25.
For WACM, GO to AM26.

No	REPAIR the faulty circuit. RECONNECT all modules.

AM11 CHECK FOR RESTORED COMMUNICATION WITH IPC (INSTRUMENT PANEL CLUSTER) DISABLED

Disconnect the CCM 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 J

No	CONNECT the module. GO to AM12

AM12 CHECK VEHICLE EQUIPMENT — APIM (SYNC MODULE)

Inspect the vehicle for APIM.

Is the vehicle equipped with APIM?

Yes

GO to AM13

No	GO to AM14

AM13 CHECK FOR RESTORED COMMUNICATION WITH APIM (SYNC MODULE) INCOMPLETE

Remove BCM fuse 17 (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 S.

No	INSTALL the removed fuse. GO to AM14

AM14 CHECK FOR RESTORED COMMUNICATION WITH ACM (AUDIO CONTROL MODULE) INCOMPLETE

Disconnect BCM Fuse 23 (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 Q.

No	INSTALL the removed fuse. GO to AM15.

AM15 VEHICLE EQUIPMENT CHECK - DSP (DIGITAL SIGNAL PROCESSOR) MODULE

Inspect the vehicle for a DSP.

Is the vehicle equipped with a DSP?

Yes

GO to AM16

No	GO to AM17

AM16 CHECK FOR RESTORED COMMUNICATION WITH DSP (DIGITAL SIGNAL PROCESSOR) MODULE INCOMPLETE

Disconnect BJB Fuses 136 (20A) and 137 (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 T.

No	INSTALL the removed fuses. GO to AM17.

AM17 VEHICLE EQUIPMENT CHECK — HUD (HEAD UP DISPLAY) MODULE

Inspect the vehicle for a HUD module.

Is the vehicle equipped with a HUD module?

Yes

GO to AM18

No	GO to AM19

AM18 CHECK FOR RESTORED COMMUNICATION WITH HUD (HEAD UP DISPLAY) MODULE DISCONNECTED

Disconnect BCM Fuse 12 (10A).

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 AG.

No	INSTALL the removed fuse. GO to AM19.

AM19 VEHICLE EQUIPMENT CHECK — WACM (WIRELESS ACCESSORY CHARGING MODULE)

Inspect the vehicle for WACM.

Is the vehicle equipped with WACM?

Yes

GO to AM20

No	HS-CAN3 tests within specification. The concern may have been caused by a communication module. RECONNECT all disconnected connectors or fuses. Test for normal operation. If the concern persists, REFER to the root cause of any connector or terminal issues.

AM20 CHECK FOR RESTORED COMMUNICATION WITH WACM (WIRELESS ACCESSORY CHARGING MODULE) INCOMPLETE

Disconnect BCM Fuse 18 (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 AI.

No	INSTALL the removed fuse. HS-CAN3 tests within specification. The concern may have been caused by a communication module. RECONNECT all disconnected connectors or fuses. Test for normal operation. If the concern persists, REFER to the root cause of any connector or terminal issues.

AM21 CHECK ACM (AUDIO CONTROL MODULE) FOR NORMAL 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

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.

AM22 CHECK APIM (ACCESSORY PROTOCOL INTERFACE MODULE) FOR NORMAL 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

VIN required to access Guided Routine (APIM)

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.

AM23 CHECK DSP (DIGITAL SIGNAL PROCESSOR) MODULE FOR NORMAL 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 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 address this concern, INSTALL a new DSP.
REFER TO: Digital Sound Processor (DSP) (415-00 Information and Entertainment 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.

AM24 CHECK HUD (HEAD UP DISPLAY) MODULE FOR NORMAL OPERATION

Ignition OFF.

Disconnect and inspect the HUD 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 HUD 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

CHECK OASIS for any applicable service information: 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 information applies to this condition, INSTALL a new HUD module.
REFER TO: Heads-Up Display (HUD) Module (419-03C Collision Warning and Avoidance 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.

AM25 CHECK IPC (INSTRUMENT PANEL CLUSTER) FOR NORMAL 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

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.

AM26 CHECK WACM (WIRELESS ACCESSORY CHARGING MODULE) FOR NORMAL 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

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.

AM27 CHECK GWM (GATEWAY MODULE A) FOR NORMAL 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AN: NO HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) COMMUNICATION, ALL MODULES DO NOT RESPOND

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

Normal Operation and Fault Symptoms

Diagnostic messages sent/received between the diagnostic scan tool and modules on HS-CAN4 are accessed through the DIAG 2 circuits. Refer to: Gateway Module A (GWM) (Communication Network Module 418-00, Removal and Installation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
APIM (if equipped)
GWM
TCU (if equipped)

AN1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any fitment or damage concerns with DLC pins 3, 4, 5, 11 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

GO to AN2

AN2 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 AN3

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.

AN3 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 AN4

No	GO to Pinpoint Test AL

AN4 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (TCU (TELEMATICS CONTROL UNIT) ) TERMINATING RESISTANCE

Disconnect the battery negative cable.

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 AN5

No	If the resistance is greater than 132 Ohms, GO to AN8. If the resistance is less than 108 Ohms, RECONNECT all disconnected connectors. GO to AN9.

AN5 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR SHORT TO GROUND

Connect the battery negative cable.

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 AN6

No	GO to AN10

AN6 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR 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.

GO to AN7

AN7 CHECK GWM (GATEWAY MODULE A) HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) 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 and 132 ohms?

Yes

GO to AN14

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

AN8 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN TCU (TELEMATICS CONTROL UNIT) AND GWM (GATEWAY MODULE A) FOR OPEN

Disconnect the TCU C2494A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2494A-8 C2431-7

C2494A-16 C2431-6

Is the resistance less than 3 ohms?

Yes

RECONNECT all disconnected connectors. GO to AN11.

No	REPAIR the faulty circuit.

AN9 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR 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 (if equipped)
- TCU C2494A (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 AN13.
For TCU, GO to AN15.

No	REPAIR the affected circuits.

AN10 CHECK HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR 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 (if equipped)
- TCU C2494A (if equipped)

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

Yes

For APIM, GO to AN13.
For TCU, GO to AN15.

No	REPAIR the faulty circuit. RECONNECT all modules.

AN11 CHECK FOR RESTORED COMMUNICATION WITH TCU (TELEMATICS CONTROL UNIT) INCOMPLETE

Disconnect BCM Fuse 11 (5A).

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. GO to AN12.

AN12 CHECK FOR RESTORED COMMUNICATION WITH APIM (ACCESSORY PROTOCOL INTERFACE MODULE) INCOMPLETE

Remove BCM fuse 17 (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 S.

No	INSTALL the removed fuse. HS-CAN4 tests within specification. The concern may have been caused by a communication module. RECONNECT all disconnected connectors or fuses. Test for normal operation. If the concern persists, REFER to the root cause of any connector or terminal issues.

AN13 CHECK APIM (ACCESSORY PROTOCOL INTERFACE MODULE) FOR NORMAL 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

VIN required to access Guided Routine (APIM)

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.

AN14 CHECK GWM (GATEWAY MODULE A) FOR NORMAL 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AN15 CHECK TCU (TELEMATICS CONTROL UNIT) FOR NORMAL 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

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 address this concern, INSTALL a new TCU.
REFER TO: Telematics Control Unit (TCU) (415-00 Information and Entertainment 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 AO: NO MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) COMMUNICATION, ALL MODULES DO NOT RESPOND

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

Normal Operation and Fault Symptoms

Diagnostic messages sent/received between the diagnostic scan tool and modules on MS-CAN are accessed through the DIAG 2 circuits. Refer to: Communication Network - System Operation and Component Description (Communication Network Module 418-00, Description and Operation).

Possible Sources

Fuse
Wiring, Terminals or Connectors
DDM (if equipped)
DSM (if equipped)
GWM
HVAC Module
PDM (if equipped)
RGTM (if equipped)
RTM (if equipped)
TRM (if equipped)
SODL (if equipped)
SODR (if equipped)

AO1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with dimensions: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any fitment or damage concerns with DLC pins 3, 4, 5, 11 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

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 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 A04

No	GO to Pinpoint Test AL

AO4 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE) TERMINATING RESISTANCE

Disconnect the battery negative cable.

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 A05

No	If the resistance is greater than 132 Ohms, GO to AO8. If the resistance is less than 108 Ohms, CONNECT all disconnected connectors. GO to AO9

AO5 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (-) CIRCUITS FOR 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 AO6

No	GO to AO10

AO6 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (-) CIRCUITS FOR SHORT TO VOLTAGE

Connect the battery negative cable.

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 AO7

AO7 CHECK GWM (GATEWAY MODULE A) MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) LOAD 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 AO29

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

AO8 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 (EATC/DATC) or C2357A (EMTC).

Action:
Click to display the connectors
EATC/DATC

Positive lead Measurement/Action Negative lead

C228A-17 C2431-23

C228A-18 C2431-22

Click to display the connectors
EMTC

Positive lead Measurement/Action Negative lead

C2357A-17 C2431-23

C2357A-18 C2431-22

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AO11

No	REPAIR the faulty circuit.

AO9 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (-) CIRCUITS FOR 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)
- CSM C341C (if equipped)
- HVAC module C228A (EATC/DATC) or C2357A (EMTC)
- DPM C652A (if equipped)
- RGTM C4174A (if equipped)
- RTM C9026 (if equipped)
- TRM C425B (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (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 AO27.
For DSM, GO to AO28.
For HVAC module, GO to AO30.
For PDM, GO to AO31.
For RGTM, GO to AO32.
For RTM, GO to AO33.
For TRM, GO to AO34.
For SODL, GO to AO35.
For SODR, GO to AO36

No	REPAIR the affected circuits. CONNECT all modules.

AO10 CHECK MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM-SPEED CONTROLLER AREA NETWORK) (-) CIRCUITS FOR 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)
- CSM C341C (if equipped)
- HVAC module C228A (EATC/DATC) or C2357A (EMTC)
- DPM C652A (if equipped)
- RGTM C4174A (if equipped)
- RTM C9026 (if equipped)
- TRM C425B (if equipped)
- SODL C4369 (if equipped)
- SODR C4370 (if equipped)

Are the resistances greater than 1000 Ohms?

Yes

For DDM, GO to AO27.
For DSM, GO to AO28.
For HVAC module, GO to AO30.
For PDM, GO to AO31.
For RGTM, GO to AO32.
For RTM, GO to AO33.
For TRM, GO to AO34.
For SODL, GO to AO35.
For SODR, GO to AO36

No	REPAIR the faulty circuit. RECONNECT all modules.

AO11 CHECK FOR RESTORED COMMUNICATION WITH HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE WITH MODULE DISCONNECTED

Disconnect BCM Fuse 21 (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 O

No	INSTALL the removed fuse. GO to AO12

AO12 VEHICLE EQUIPMENT CHECK - RTM (RADIO TRANSCEIVER MODULE)

Inspect the vehicle for RTM.

Is the vehicle equipped with RTM?

Yes

GO to AO13

No	GO to AO14

AO13 CHECK FOR RESTORED COMMUNICATION WITH RTM (RADIO TRANSCEIVER MODULE) INCOMPLETE

Remove BCM fuse 17 (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 Pinpoint Test V

No	INSTALL the removed fuse. GO to AO14

AO14 VEHICLE EQUIPMENT CHECK - RGTM (REAR LIFTGATE TAILGATE MODULE)

Inspect the vehicle for RGTM.

Is the vehicle equipped with RGTM?

Yes

GO to AO15

No	GO to AO16

AO15 CHECK FOR RESTORED COMMUNICATION WITH RGTM (REAR LIFTGATE TAILGATE MODULE) INCOMPLETE

Disconnect BJB fuse 41 (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 AO16

AO16 VEHICLE EQUIPMENT CHECK - DDM (DRIVER DOOR MODULE)

Inspect the vehicle for DDM.

Is the vehicle equipped with DDM?

Yes

GO to AO17

No	GO to AO18

AO17 CHECK FOR RESTORED COMMUNICATION WITH DDM (DRIVER DOOR MODULE) INCOMPLETE

Disconnect BCM fuse 14 (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 Y

No	INSTALL the removed fuse. GO to AO18

AO18 VEHICLE EQUIPMENT CHECK - PDM (PASSENGER DOOR MODULE)

Inspect the vehicle for PDM.

Is the vehicle equipped with PDM?

Yes

GO to AO19

No	GO to AO20

AO19 CHECK FOR RESTORED COMMUNICATION WITH PDM (PASSENGER DOOR MODULE) INCOMPLETE

Disconnect BCM fuse 7 (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 Z

No	INSTALL the removed fuse. GO to AO20

AO20 VEHICLE EQUIPMENT CHECK - DSM (DRIVER SEAT MODULE)

Inspect the vehicle for DSM.

Is the vehicle equipped with DSM?

Yes

GO to AO21

No	GO to AO22

AO21 CHECK FOR RESTORED COMMUNICATION WITH DSM (DRIVER SEAT MODULE) INCOMPLETE

Disconnect BJB fuse 30 (30A).

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test X

No	INSTALL the removed fuse. GO to AO22

AO22 VEHICLE EQUIPMENT CHECK - TRM (TRAILER MODULE)

Inspect the vehicle for TRM.

Is the vehicle equipped with TRM?

Yes

GO to AO23

No	GO to AO24

AO23 CHECK FOR TRAILER MODULE (TRM) COMMUNICATION NETWORK RESTORED INCOMPLETE

Disconnect fuse BJB 91 (40A).

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test.

No	INSTALL the removed fuse. GO to AO24.

AO24 VEHICLE EQUIPMENT CHECK - SIDE OBSTACLE DETECTION CONTROL MODULE LEFT (SODL) AND SIDE OBSTACLE DETECTION CONTROL MODULE RIGHT (SODR)

Inspect the vehicle for SODL and SODR.

Is the vehicle equipped with SODL and SODR?

Yes

GO to AO25.

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 terminal concerns.

AO25 CHECK FOR SIDE OBSTACLE DETECTION CONTROL MODULE LEFT (SODL) AND SIDE OBSTACLE DETECTION CONTROL MODULE RIGHT (SODR) COMMUNICATION NETWORK RESTORED INCOMPLETE

Disconnect fuse BJB 25 (10A).

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuse. GO to AO26.

No	INSTALL the removed fuse. 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 terminal concerns.

AO26 CHECK FOR SIDE OBSTACLE DETECTION CONTROL MODULE RIGHT (SODR) COMMUNICATION NETWORK RESTORED DISABLED

Disconnect SODR C4370.

Using a scan tool, perform the network test.

Do all other modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AB.

No	CONNECT the module. GO to Pinpoint Test AA.

AO27 CHECK DRIVER DOOR MODULE (DDM) 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

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.

AO28 CHECK DRIVER SEAT MODULE (DSM) 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.

AO29 CHECK GATEWAY MODULE A (GWM) 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

AO30 CHECK HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 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 in 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 articles address this concern, INSTALL a new HVAC module. Refer to the Removal and Installation procedure in Section 412-00.

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.

AO31 CHECK PASSENGER DOOR MODULE (PDM) 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 address this concern, INSTALL a new 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.

AO32 CHECK LIFTGATE TAILGATE MODULE (RGTM) 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

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 address this concern, INSTALL a new RGTM.
REFER to: Rear Gate Liftgate Module (RGTM) (501-03 Body Closures, 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.

AO33 CHECK RADIO TRANSCEIVER MODULE (RTM) 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

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 address this concern, 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.

AO34 CHECK TRAILER MODULE (TRM) 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 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 address this concern, 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.

AO35 CHECK SIDE OBSTACLE DETECTION CONTROL MODULE LEFT (SODL) 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 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 address this concern, INSTALL a new SODL.
REFER TO: Side Object Detection Control Module (SODCM) (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.

AO36 CHECK SIDE OBSTACLE DETECTION CONTROL MODULE RIGHT (SODR) 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 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 address this concern, INSTALL a new SODR.
REFER TO: Side Object Detection Control Module (SODCM) (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 AP: NO POWER AT DLC (DATA LINK CONNECTOR)

Normal Operation and Fault Symptoms

The diagnostic scan tool is connected to the DLC to communicate with the DIAG 1 and DIAG 2 circuits. The GWM relays diagnostic messages for HS-CAN1, HS-CAN2, HS-CAN3, HS-CAN4 and MS-CAN.

Possible Sources

Fuse
Wiring, terminals or connector
Diagnostic scan tool
GWM

Visual Inspection and Pre-checks

Make sure that BCM fuses 22 (7.5A) and 186 (10A) are OK.

AP1 CHECK 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 DLC. An improperly grounded scan tool will disrupt network message traffic. Disconnect the diagnostic scan tool cable from the DLC.

Inspect DLC pins 4, 5 and 16 for spread or damage using a Rotunda Flexible Probe measuring: width 1.5 mm x thickness 0.80 mm.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions if they are not printed on the probe.

Are there any pin fit or pin damage concerns with DLC pins 4, 5 and 16?

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 information exists to resolve this concern, INSTALL a new GWM.
REFER TO: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

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 DLC (DATA LINK CONNECTOR) VOLTAGE SUPPLY CIRCUIT FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to AP5

GO to AP4

AP4 CHECK GWM (GATEWAY MODULE A) VOLTAGE SUPPLY CIRCUITS FOR OPEN

Disconnect GWM C2431.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C2431-13 Ground

C2431-24 Ground

Is the voltage greater than 11 volts?

Yes

GO to AP7

No	CONFIRM that BCM fuse 22 (7.5A) or 186 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams Cell to determine the possible causes of the short circuit.

AP5 CHECK DLC (DATA LINK CONNECTOR) GROUND CIRCUITS FOR OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C251-4 Ground

C251-5 Ground

Is the resistance less than 3 ohms?

Yes

CHECK the diagnostic scan tool for proper operation.

GO to AP6

AP6 CHECK GWM (GATEWAY MODULE A) GROUND CIRCUITS FOR OPEN

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 AP7

No	REPAIR the faulty circuit.

AP7 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

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 information exists to resolve this concern, 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. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

PINPOINT TEST AQ: U3000:44, U3000:45, U3000:46 OR U3000:47

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.

Possible Sources

AQ1 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 the DTC U3000:44, U3000:45, U3000:46 or U3000:47?

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 AR: 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.

AR1 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

Symptom Chart

Symptom Chart: Communication Network

Symptom Chart

Pinpoint Tests

Normal Operation and Fault Symptoms

Possible Sources

1.5 L EcoBoost

2 L EcoBoost

2.5 L Duratec — HEV/PHEV

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

1.5 L EcoBoost

2 L EcoBoost/2.5 L Duratec — HEV/PHEV

2 L EcoBoost/2.5 L Duratec — HEV/PHEV

1.5 L EcoBoost

2 L EcoBoost/2.5 L Duratec — HEV/PHEV

2 L EcoBoost/2.5 L Duratec — HEV/PHEV

1.5 L EcoBoost

2 L EcoBoost/2.5 L Duratec — HEV/PHEV

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

EATC/DATC

EMTC

EATC/DATC

EMTC

EATC/DATC

EMTC

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