Ford Escape: Park Aid System - Vehicles With: Rear Park Aid System / Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

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

Diagnostic Trouble Code Chart

Module	Trouble Code	Description	Action
PAM	B1303:13	Park Aid Switch: Circuit Open	GO to Pinpoint Test E
PAM	B1303:9E	Park Aid Switch: Stuck On	GO to Pinpoint Test E
PAM	B1B36:08	Right Front Outer Sensor: Bus Signal/Message Fault	GO to Pinpoint Test J
PAM	B1B36:1F	Right Front Outer Sensor: Circuit Open	GO to Pinpoint Test J
PAM	B1B36:31	Right Front Outer Sensor: No Signal	GO to Pinpoint Test J
PAM	B1B36:64	Right Front Outer Sensor: Signal Invalid	GO to Pinpoint Test J
PAM	B1B36:96	Right Front Outer Sensor: Internal Component Malfunction	GO TO Pinpoint Test O
PAM	B1B36:97	Right Front Outer Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test P
PAM	B1B36:98	Right Front Outer Sensor: Component or System Overheated	GO to Pinpoint Test P
PAM	B1B38:08	Right Front Inner Sensor: Bus Signal/Message Failure	GO to Pinpoint Test K
PAM	B1B38:1F	Right Front Inner Sensor: Circuit Open	GO to Pinpoint Test K
PAM	B1B38:31	Right Front Inner Sensor: No Signal	GO to Pinpoint Test K
PAM	B1B38:64	Right Front Inner Sensor: Signal Invalid	GO to Pinpoint Test K
PAM	B1B38:96	Right Front Inner Sensor: Internal Component Malfunction	GO TO Pinpoint Test O
PAM	B1B38:97	Right Front Inner Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test P
PAM	B1B38:98	Right Front Inner Sensor: Component or System Overheated	GO to Pinpoint Test P
PAM	B1B40:08	Left Front Outer Sensor: Bus Signal/Message Failure	GO to Pinpoint Test L
PAM	B1B40:1F	Left Front Outer Sensor: Circuit Open	GO to Pinpoint Test L
PAM	B1B40:31	Left Front Outer Sensor: No Signal	GO to Pinpoint Test L
PAM	B1B40:64	Left Front Outer Sensor: Signal Invalid	GO to Pinpoint Test L
PAM	B1B40:96	Left Front Outer Sensor: Internal Component Malfunction	GO TO Pinpoint Test O
PAM	B1B40:97	Left Front Outer Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test P
PAM	B1B40:98	Left Front Outer Sensor: Component or System Overheated	GO to Pinpoint Test P
PAM	B1B42:08	Left Front Inner Sensor: Bus Signal/Message Failure	GO to Pinpoint Test M
PAM	B1B42:1F	Left Front Inner Sensor: Circuit Open	GO to Pinpoint Test M
PAM	B1B42:31	Left Front Inner Sensor: No Signal	GO to Pinpoint Test M
PAM	B1B42:64	Left Front Inner Sensor: Signal Invalid	GO to Pinpoint Test M
PAM	B1B42:96	Left Front Inner Sensor: Internal Component Malfunction	GO TO Pinpoint Test O
PAM	B1B42:97	Left Front Inner Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test P
PAM	B1B42:98	Left Front Inner Sensor: Component or System Overheated	GO to Pinpoint Test P
PAM	B1B44:08	Right Rear Outer Sensor: Bus Signal/Message Failure	GO to Pinpoint Test F
PAM	B1B44:1F	Right Rear Outer Sensor: Circuit Open	GO to Pinpoint Test F
PAM	B1B44:31	Right Rear Outer Sensor: No Signal	GO to Pinpoint Test F
PAM	B1B44:64	Right Rear Outer Sensor: Signal Invalid	GO to Pinpoint Test F
PAM	B1B44:96	Right Rear Outer Sensor: Internal Component Malfunction	GO to Pinpoint Test N
PAM	B1B44:97	Right Rear Outer Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test Q
PAM	B1B44:98	Right Rear Outer Sensor: Component or System Overheated	GO to Pinpoint Test Q
PAM	B1B46:08	Right Rear Inner Sensor: Bus Signal/Message Failure	GO to Pinpoint Test G
PAM	B1B46:1F	Right Rear Inner Sensor: Circuit Open	GO to Pinpoint Test G
PAM	B1B46:31	Right Rear Inner Sensor: No Signal	GO to Pinpoint Test G
PAM	B1B46:64	Right Rear Inner Sensor: Signal Invalid	GO to Pinpoint Test G
PAM	B1B46:96	Right Rear Inner Sensor: Internal Component Malfunction	GO to Pinpoint Test N
PAM	B1B46:97	Right Rear Inner Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test Q
PAM	B1B46:98	Right Rear Inner Sensor: Component or System Overheated	GO to Pinpoint Test Q
PAM	B1B48:08	Left Rear Outer Sensor: Bus Signal/Message Failure	GO to Pinpoint Test H
PAM	B1B48:1F	Left Rear Outer Sensor: Circuit Open	GO to Pinpoint Test H
PAM	B1B48:31	Left Rear Outer Sensor: No Signal	GO to Pinpoint Test H
PAM	B1B48:64	Left Rear Outer Sensor: Signal Invalid	GO to Pinpoint Test H
PAM	B1B48:96	Left Rear Outer Sensor: Internal Component Malfunction	GO to Pinpoint Test N
PAM	B1B48:97	Left Rear Outer Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test Q
PAM	B1B48:98	Left Rear Outer Sensor: Component or System Overheated	GO to Pinpoint Test Q
PAM	B1B50:08	Left Rear Inner Sensor: Bus Signal/Message Failure	GO to Pinpoint Test I
PAM	B1B50:1F	Left Rear Inner Sensor: Circuit Open	GO to Pinpoint Test I
PAM	B1B50:31	Left Rear Inner Sensor: No Signal	GO to Pinpoint Test I
PAM	B1B50:64	Left Rear Inner Sensor: Signal Invalid	GO to Pinpoint Test I
PAM	B1B50:96	Left Rear Inner Sensor: Internal Component Malfunction	GO to Pinpoint Test N
PAM	B1B50:97	Left Rear Inner Sensor: Component or System Operation Obstructed or Blocked	GO to Pinpoint Test Q
PAM	B1B50:98	Left Rear Inner Sensor: Component or System Overheated	GO to Pinpoint Test Q
PAM	B1B54:11	Park Assist Function LED: Short to Ground	GO to Pinpoint Test D
PAM	B1B54:15	Park Assist Function LED: Short to Battery or Open	GO to Pinpoint Test D
PAM	B1B57:11	Front Sensor Power Supply Circuit: Short to Ground	GO to Pinpoint Test B
PAM	B1B58:11	Rear Sensor Power Supply Circuit: Short to Ground	GO to Pinpoint Test C
PAM	U0100:00	Lost Communication With ECM/PCM "A": No Sub Type Information	GO TO Pinpoint Test T
PAM	U0121:00	Lost Communication with Anti-Lock Braking System (ABS) Control Module: No Sub-Type Information	GO to Pinpoint Test U
PAM	U0131:00	Power Steering Control Module Communication Lost: No Sub-Type Information	GO to Pinpoint Test V
PAM	U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test W
PAM	U0146:00	Lost communication with gateway "A": no sub-type information	GO TO Pinpoint Test X
PAM	U0155:00	Lost Communication with Instrument Panel Cluster (IPC) Control Module: No Sub Type Information	GO to Pinpoint Test Y
PAM	U0164:00	Lost Communication with HVAC Control Module: No Sub Type Information	GO to Pinpoint Test Z
PAM	U0184:00	Lost Communication With Radio: No Sub Type Information	GO to Pinpoint Test AB
PAM	U0212:00	Lost Communication with Steering Column Control Module: No Sub Type Information	GO to Pinpoint Test AC
PAM	U0252:00	Rear Lighting Control Module "B" Communication Lost: No Sub-Type Information	GO to Pinpoint Test advertisement
PAM	U0253:00	Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information	GO TO Pinpoint Test AE
PAM	U0293:00	Lost Communication with Hybrid/Electric Transmission Control Module: No Sub Type Information	GO TO Pinpoint Test T
PAM	U0300:57	Internal Control Module Software Incompatibility: Incorrect/Incompatible Software Component	GO to Pinpoint Test AH
PAM	U0401:00	Incorrect Data Received from ECM/PCM 'A': No Sub Type Information	GO TO Pinpoint Test T
PAM	U0415:00	Incorrect Data Received from Anti-Lock Brake System (ABS) Control Module "A": No Sub-Type Information	GO to Pinpoint Test U
PAM	U0420:00	Incorrect Data Received from Power Steering Control Module "A": No Sub-Type Information	GO to Pinpoint Test V
PAM	U0422:00	Incorrect Data Received from Body Control Module: No Sub Type Information	GO to Pinpoint Test W
PAM	U0423:82	Incorrect Data Received from Instrument Panel Cluster Control Module: Active/Incorrect Sequence Counter/Not Updated	GO to Pinpoint Test Y
PAM	U0424:00	Incorrect Data Received from HVAC Control Module: No Sub Type Information	GO to Pinpoint Test Z
PAM	U0424:82	Incorrect data received from HVAC control module: active/incorrect sequence counter/not updated	GO to Pinpoint Test Z
PAM	U0428:00	Invalid Data Received from Steering Wheel Angle Sensor Module: No Subtype Information	GO TO Pinpoint Test AA
PAM	U0485:82	Incorrect Data Received from Radio: Active/Incorrect Sequence Counter/Not Updated	GO to Pinpoint Test AB
PAM	U0553:82	Incorrect Data Received from Rear Lighting Control Module "B": Active/Incorrect Sequence Counter/Not Updated	GO to Pinpoint Test advertisement
PAM	U0554:00	Invalid Data Received from Auxiliary Protocol Interface Module: No Sub Type Information	GO TO Pinpoint Test AE
PAM	U0554:82	Incorrect Data Received from Accessory Protocol Interface Module: Active/Incorrect Sequence Counter/Not Updated	GO TO Pinpoint Test AE
PAM	U0594:00	Incorrect Data Received from Hybrid/Electric Transmission Control Module: No Sub Type Information	GO TO Pinpoint Test T
PAM	U1000:00	Solid State Driver Protection Active - Driver Disabled: No Sub Type Information	GO TO Pinpoint Test AF
PAM	U2024:41	Control Module Calibration Data: General Checksum Error	GO to Pinpoint Test AG
PAM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AG
PAM	U2101:00	Control Module Configuration Incompatible: No Sub Type Information	GO to Pinpoint Test AG
PAM	U3000:44	Control Module: Data Memory Failure	GO to Pinpoint Test AH
PAM	U3000:45	Control module: software memory failure	GO to Pinpoint Test AH
PAM	U3000:46	Control module: calibration/parameter memory failure	GO to Pinpoint Test AH
PAM	U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test AH

Global Customer Symptom Codes (GCSC) Table

Symptom	Action
Driver Assistance and Information > Park Assist > Control > Inoperative	GO to Pinpoint Test S
Driver Assistance and Information > Park Assist > Performance > Inoperative	GO to Pinpoint Test S
Driver Assistance and Information > Front Sensing > Control > Inoperative	GO to Pinpoint Test A
Driver Assistance and Information > Front Sensing > Control > Inoperative	GO to Pinpoint Test D
Driver Assistance and Information > Front Sensing > Control > Inoperative	GO to Pinpoint Test E
Driver Assistance and Information > Front Sensing > Performance > Inaccurate	GO TO Pinpoint Test R
Driver Assistance and Information > Front Sensing > Performance > Inoperative	GO to Pinpoint Test A
Driver Assistance and Information > Front Sensing > Performance > Inoperative	GO to Pinpoint Test D
Driver Assistance and Information > Front Sensing > Performance > Inoperative	GO to Pinpoint Test E
Driver Assistance and Information > Front Sensing > Performance > Inoperative	GO TO Pinpoint Test R
Driver Assistance and Information > Rear Sensing > Control > Inoperative	GO to Pinpoint Test A
Driver Assistance and Information > Rear Sensing > Control > Inoperative	GO to Pinpoint Test D
Driver Assistance and Information > Rear Sensing > Control > Inoperative	GO to Pinpoint Test E
Driver Assistance and Information > Rear Sensing > Control > Inoperative	GO to Pinpoint Test S
Driver Assistance and Information > Rear Sensing > Performance > Inaccurate	GO TO Pinpoint Test R
Driver Assistance and Information > Rear Sensing > Performance > Inoperative	GO to Pinpoint Test A
Driver Assistance and Information > Rear Sensing > Performance > Inoperative	GO to Pinpoint Test D
Driver Assistance and Information > Rear Sensing > Performance > Inoperative	GO to Pinpoint Test E
Driver Assistance and Information > Rear Sensing > Performance > Inoperative	GO TO Pinpoint Test R
Driver Assistance and Information > Rear Sensing > Performance > Inoperative	GO to Pinpoint Test S
Safety and Security > Trailer Towing > Trailer Brake Control > Inoperative	GO to Pinpoint Test S

Symptom Chart

Symptom Chart: Park Assist System

Condition	Possible Sources	Action
Module does not communicate with the diagnostic scan tool	Fuse Wiring, Terminals or Connectors PAM	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
Park Assist Audible Warning Inoperative	Refer to Pinpoint Test	GO to Pinpoint Test A
Continuous or Intermittent Audible Warning with No Obstacle or Diagnostic Trouble Codes	Refer to Pinpoint Test	GO TO Pinpoint Test R
Park Assist Audible Warnings Inoperative	Refer to Pinpoint Test	GO to Pinpoint Test A
Park Assist Menu Not Available in Message Center and Cannot Be Deactivated	MyKey® Restricted Key Is Being Used	Normal Operation.
Parking Aid switch inoperative	Refer to Pinpoint Test	GO to Pinpoint Test E
Reverse brake assist inoperative or malfunctions	Refer to Pinpoint Test	GO to Pinpoint Test S
Parking Aid switch LED inoperative or stays on	Refer to Pinpoint Test	GO to Pinpoint Test D
"Front Parking Aid Unavailable, Sensor Blocked" message	Refer to Pinpoint Test	GO to Pinpoint Test P
"Rear Parking Aid Unavailable, Sensor Blocked" message	Refer to Pinpoint Test	GO to Pinpoint Test Q

Pinpoint Test(s)

PINPOINT TEST A: PARK AID SYSTEM DOES NOT OPERATE

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

Possible Sources

Parking Aid is disabled
Communication Problem
PAM
IPC Concern
TR input

A1 PERFORM NETWORK CHECK

The ignition is on.

Using a scan tool, perform the network test.

Do all modules pass the network test?

Yes

GO to A2

No	DIAGNOSE any communication concerns. REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

A2 CHECK THE PAM (PARKING AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the scan tool, perform the PAM self-test.

Are any Parking Aid Diagnostic Trouble Codes (DTCs) stored?

Yes

REFER to the appropriate DTC chart in this section.

GO to A3

A3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST DIAGNOSTIC TROUBLE CODES (DTCS)

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

Are any IPC Diagnostic Trouble Codes (DTCs) stored?

Yes

REFER TO: Instrument Cluster, Message Center and Warning Chimes - Vehicles With: Head-Up Display (HUD) (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).

GO to A4

A4 CHECK THAT THE PARKING AID SYSTEM IS ENABLED

Make sure the rear and front parking aid (if equipped) are enabled in the IPC Message Center.

Is the Parking Aid system enabled?

Yes

GO to A5

No	ENABLE the Parking Aid system.

A5 CHECK FOR CORRECT GEAR SHIFT

Apply the parking brake.

The ignition is on.

While watching the IPC PRNDL display, quickly select each gear through the full gear range.

Does the IPC PRNDL indicator match the selected gear in all ranges?

Yes

GO to A6

No	REFER TO: Instrument Cluster, Message Center and Warning Chimes - Vehicles With: Head-Up Display (HUD) (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).

A6 CHECK THE WARNING CHIMES

Ignition OFF.

Open the driver door.

Turn the headlamp switch to ON.

Does the warning chime sound through the audio system?

Yes

GO to A7

No	REFER TO: Instrument Cluster, Message Center and Warning Chimes - Vehicles With: Head-Up Display (HUD) (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).

A7 CHECK THE PAM (PARKING AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: B1B57:11

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

Normal Operation and Fault Symptoms

The PAM supplies voltage to the front parking aid sensors through a shared circuit.

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B57:11	Front Sensor Power Supply Circuit: Short to Ground	Continuous memory and on-demand DTC that is set when the front sensor power circuit is shorted to ground or the return circuit is open.

Possible Sources

Wiring, Terminals or Connectors
Front Parking Aid sensor
Front Active Parking Aid Sensor (if equipped)
PAM

B1 CHECK THE FRONT BUMPER WIRING HARNESS

Ignition OFF.

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion.

Is the front bumper wiring harness in good condition?

Yes

GO to B2

No	REPAIR or INSTALL a new bumper wiring harness.

B2 CHECK THE LEFT HAND (LEFT FRONT) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT TO GROUND

Disconnect: Left Front Outer Parking Aid Sensor C1428.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B3

No	INSTALL a new left outer parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

B3 CHECK THE LEFT HAND (LEFT FRONT) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT TO GROUND

Ignition OFF.

Disconnect: Left Inner Parking Aid Sensor C1429.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

If the vehicle is equipped with Active Park Assist, GO to B4.
If the vehicle is NOT equipped with Active Park Assist, GO to B6.

No	INSTALL a new LHF inner parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

B4 CHECK THE LEFT HAND (LEFT FRONT) ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT TO GROUND

Ignition OFF.

Disconnect: Left Active Park Assist Sensor C1854.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B5

No	INSTALL a new LHF front active park assist sensor. REFER TO: Front Active Park Assist Sensors (413-13C Parking Aid - Vehicles With: Active Park Assist, Removal and Installation).

B5 CHECK THE RIGHT HAND (RIGHT FRONT) ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT TO GROUND

Ignition OFF.

Disconnect: Right Front Active Park Assist Sensor C1855.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B6

No	INSTALL a new RHF active park assist sensor. REFER TO: Front Active Park Assist Sensors (413-13C Parking Aid - Vehicles With: Active Park Assist, Removal and Installation).

B6 CHECK THE RHF (RIGHT FRONT) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT TO GROUND

Ignition OFF.

Disconnect the right inner parking aid sensor C1430.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B7

No	INSTALL a new RHF inner parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

B7 CHECK THE RIGHT HAND (RIGHT FRONT) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT TO GROUND

Ignition OFF.

Disconnect: Right Front Outer Parking Aid Sensor C1431.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B8

No	INSTALL a new RHF outer parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

B8 CHECK THE FRONT PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect the PAM C4226B.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226B-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to B9

No	REPAIR the circuit.

B9 CHECK THE FRONT PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226B-2 C4226B-12

Is the resistance greater than 10000 Ohms?

Yes

GO to B10

No	REPAIR the circuit.

B10 CHECK THE PAM (PARKING AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM.
REFER TO: Parking Aid - System Operation and Component Description (413-13C Parking Aid - Vehicles With: Active Park Assist, Description and Operation).

No	The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: B1B58:11

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

Normal Operation and Fault Symptoms

The PAM supplies voltage to the front parking aid sensors through a shared circuit.

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B58:11	Rear Sensor Power Supply Circuit: Short to Ground	Continuous DTC, on demand, that sets when the rear sensor supply voltage circuit is shorted to ground or to the return signal circuit.

Possible Sources

Wiring, Terminals or Connectors
Rear Park Aid Sensor
PAM

C1 CHECK THE REAR BUMPER WIRING HARNESS

Ignition OFF.

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion.

Is the bumper wiring harness in good condition?

Yes

GO to C2

No	REPAIR or INSTALL a new bumper wiring harness.

C2 CHECK THE LEFT (REAR LEFT) OUTER PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Disconnect: Left Outer Park Aid Sensor C4544.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C3

No	INSTALL a new left outer park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

C3 CHECK THE LEFT (REAR LEFT) INNER PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Ignition OFF.

Disconnect: Left Inner Park Aid Sensor C4545.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO TO C4

No	INSTALL a new left inner park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

C4 CHECK THE RIGHT (REAR RIGHT) INNER PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Ignition OFF.

Disconnect: Right Inner Park Aid Sensor C4546.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C5

No	INSTALL a new right inner park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

C5 CHECK THE RIGHT (REAR RIGHT) OUTER PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Ignition OFF.

Disconnect: Right Outer Park Aid Sensor C4547.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

If the vehicle is equipped with rear side active park aid sensors, GO to C6.
If the vehicle is NOT equipped with rear side active park aid sensors, GO to C8.

No	INSTALL a new right outer park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

C6 CHECK THE RIGHT (REAR RIGHT) SIDE ACTIVE PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Ignition OFF.

Disconnect the right side active park aid sensor C4421.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO TO C7

No	INSTALL a new right side sensor. REFER TO: Rear Active Park Aid Sensors (413-13C Park Aid System - Vehicles With: Active Park Aid System, Removal and Installation).

C7 CHECK THE LEFT (REAR LEFT) SIDE ACTIVE PARK AID SENSOR FOR AN INTERNAL SHORT CIRCUIT

Ignition OFF.

Disconnect the left side active park aid sensor C4420.

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO TO C8

No	INSTALL a new left side sensor. REFER TO: Rear Active Park Aid Sensors (413-13C Park Aid System - Vehicles With: Active Park Aid System, Removal and Installation).

C8 CHECK THE REAR PARK AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect the PAM C4226A.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-3 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO TO C9

No	REPAIR the circuit.

C9 CHECK THE PARK AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-3 C4226A-10

Is the resistance greater than 10000 Ohms?

Yes

GO TO C10

No	REPAIR the circuit.

C10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D: PARK AID SWITCH INDICATOR (LIGHT EMITTING DIODE) DOES NOT OPERATE OR IS ALWAYS ON

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B54:11	Park Assist Function LED: Short to Ground	Continuous on-demand DTC that sets when the park aid system disable indicator LED circuit is shorted to ground.
PAM B1B54:15	Park Assist Function LED: Short to Battery or Open	Continuous on-demand DTC that sets when the park aid system disable indicator LED circuit is open or shorted to battery voltage.

Possible Sources

Wiring, Terminals or Connectors
PAM
Auto Start-Stop Disable Switch

D1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK AID MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Is DTC B1B54:11 present?

Yes

GO to D4

No	If the LED does not illuminate, GO to D3. If the LED is illuminated constantly, GO to D2.

D2 CHECK THE LED CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect the PAM C4226A.

The ignition is on.

Does the LED remain illuminated?

Yes

REPAIR the circuit.

GO to D7

D3 CHECK THE LED CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the PAM C4226A.

Disconnect the Automatic Start-Stop Deactivation Switch C3010.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3010-7 C4226A-4

Is the resistance less than 3 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D4 CHECK THE LED CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect the PAM C4226A.

Disconnect the Automatic Start-Stop Deactivation Switch C3010.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3010-7 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to D5

No	REPAIR the circuit.

D5 CHECK THE LED FROM THE PAM (PARK AID MODULE) BYPASS

Connect the auto start-stop disable switch C3010.

Connect a fused jumper wire:
Click to display connectors

Positive lead Measurement/Action Negative lead

C4226A-4 Battery positive

Is the LED illuminated?

Yes

REMOVE the fusible link. GO to D7

GO to D6

D6 CHECK THE AUTO START-STOP DISABLE SWITCH GROUND

Disconnect the auto start-stop disable switch C3010.

Action
Click to display connectors

Positive lead Measurement/Action Negative lead

C3010-12 Ground

Is the resistance less than 3 ohms?

Yes

INSTALL a new auto start-stop disable switch.

No	REPAIR the circuit.

D7 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E: PARK AID SWITCH DOES NOT OPERATE OR OPERATES INCORRECTLY

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1303:13	Park Aid Switch: Circuit Open	Continuous DTC that sets in the PAM when the PAM detects a stuck open condition in the park aid disable switch input circuit.
PAM B1303:9E	Park Aid Switch: Stuck On	Continuous DTC that sets in the PAM when the PAM detects a short to ground in the park aid disable switch input circuit.

Possible Sources

Wiring, Terminals or Connectors
Parking Aid Switch
PAM

E1 CONFIRM THE CUSTOMER CONCERN

The ignition is on.

Check the park aid system operation.

Does the park aid system operate correctly?

Yes

CLEAR the DTC. The system is currently operating correctly. The concern may be caused by high network traffic or by the driver's perception of how the park aid system operates. REFER TO the Owner's Manual.

GO to E2

E2 CHECK THE PAM (PARK AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the scan tool, perform the PAM self-test.

Are any diagnostic trouble codes (DTCs) present?

Yes

For DTC B1303:13 GO to E4.
For DTC B1303:9E GO to E3.
For all other PAM DTCs, REFER TO the PAM DTC Chart in this section.

GO to E5

E3 CHECK THE PARK AID SWITCH CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect the PAM C4226A.

Disconnect the Automatic Start-Stop Deactivation Switch C3010.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3010-3 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to E6

No	REPAIR the circuit.

E4 CHECK THE PARK AID SWITCH CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect the PAM C4226A.

Disconnect the Automatic Start-Stop Deactivation Switch C3010.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3010-3 C4226A-13

Is the resistance less than 3 ohms?

Yes

GO to E5

No	REPAIR the circuit.

E5 CHECK THE PARK AID SWITCH "GROUND" CIRCUIT FOR AN OPEN

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C3010-12 Ground

Is the resistance less than 3 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E6 CHECK THE PARK AID SWITCH OPERATION

Connect the auto start-stop disable switch C3010.

Measure while pressing and releasing the park aid switch:
Press to display the connectors

Positive lead Measurement/Action Negative lead

C4226A-13 Ground

Is the resistance less than 3 Ohms with the switch pressed and greater than 10,000 Ohms with the switch released?

Yes

GO to E7

No	INSTALL a new auto start-stop disable switch.

E7 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST F: B1B44:08, B1B44:31, B1B44:1F AND B1B44:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B44:08	Right rear outer sensor: bus signal/message failures	Continuous or on-demand DTC that is set in the PAM when there is a LIN message failure for the right outer park aid sensor.
PAM B1B44:31	Right Rear Outer Sensor: No Signal	Continuous or on-demand DTC that is set in the PAM when no signal is received via LIN for the right outer park aid sensor.
PAM B1B44:1F	Right Rear Outer Sensor: Circuit Open	Continuous or on-demand DTC that is set in the PAM when an intermittent fault is detected via LIN for the right outer park aid sensor.
PAM B1B44:64	Right Rear Outer Sensor: Signal Invalid	Continuous or on-demand DTC that is set in the PAM when there is no response from the right outer park aid sensor.

Possible Sources

Wiring, Terminals or Connectors
Right park aid sensor
PAM

F1 CHECK THE PAM (PARKING AID MODULE) SELF-TEST DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for multiple rear park aid sensors?

Yes

GO to F2

No	• For DTCs B1B44:08, B1B44:31, B1B44:1F or B1B44:64, GO to F3 • For information on all other PAM DTCs, REFER to the PAM DTC chart in this section.

F2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion.

Is the rear bumper wiring harness in good condition?

Yes

GO to F3

No	REPAIR or INSTALL a new rear bumper wiring harness.

F3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the Right Outer Park Aid Sensor C4547.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4547-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to F4

No	REPAIR the circuit.

F4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4547-1 C4547-3

Is the voltage greater than 9 volts?

Yes

GO to F5

No	REPAIR the circuit.

F5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4547-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to F6

F6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4547-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to F7

No	REPAIR the circuit.

F7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4547-2 C4547-1

C4547-2 C4547-3

Is the resistance greater than 10000 ohms?

Yes

GO to F8

No	REPAIR the damaged circuits.

F8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C4547-1 C4226A-3

C4547-2 C4226A-5

C4547-3 C4226A-10

Is the resistance less than 3 ohms?

Yes

GO to F9

No	REPAIR the faulty circuit.

F9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226A.

Install a known good sensor in place of the suspect right outer park aid sensor.
REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - vehicles with: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B44:08, B1B44:31, B1B44:1F or B1B44:64 present?

Yes

GO to F10

No	INSTALL a new right outer park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

F10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: B1B46:08, B1B46:31, B1B46:1F AND B1B46:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B46:08	Right rear inner sensor: bus signal/message failures	Continuous or on-demand DTC that is set in the PAM when there is a LIN message failure for the right inner park aid sensor.
PAM B1B46:31	Right Rear Inner Sensor: No Signal	Continuous or on-demand DTC that is set in the PAM when no signal is received via LIN for the right inner park aid sensor.
PAM B1B46:1F	Right Rear Inner Sensor: Circuit Open	Continuous or on-demand DTC that is set in the PAM when an intermittent fault is detected via LIN for the right inner park aid sensor.
PAM B1B46:64	Right Rear Inner Sensor: Signal Invalid	Continuous or on-demand DTC that is set in the PAM when there is no response from the right inner park aid sensor.

Possible Sources

Wiring, Terminals or Connectors
Right inner park aid sensor
PAM

G1 CHECK THE PAM (PARK AID MODULE) DTCS SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for multiple rear park aid sensors?

Yes

GO to G2

No	• For DTCs B1B46:08, B1B46:31, B1B46:1F or B1B46:64, GO to G3 • For information on all other PAM DTCs, REFER to the PAM DTC chart in this section.

G2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion.

Is the rear bumper wiring harness in good condition?

Yes

GO to G3

No	REPAIR or INSTALL a new rear bumper wiring harness.

G3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the Right Inner Park Aid Sensor C4546.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4546-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to G4

No	REPAIR the circuit.

G4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4546-1 C4546-3

Is the voltage greater than 9 volts?

Yes

GO to G5

No	REPAIR the circuit.

G5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4546-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to G6

G6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4546-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to G7

No	REPAIR the circuit.

G7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4546-2 C4546-1

C4546-2 C4546-3

Is the resistance greater than 10000 ohms?

Yes

GO to G8

No	REPAIR the damaged circuits.

G8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C4546-1 C4226A-3

C4546-2 C4226A-15

C4546-3 C4226A-10

Is the resistance less than 3 ohms?

Yes

GO to G9

No	REPAIR the faulty circuit.

G9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226A.

Install a known good sensor in place of the suspect right inner park aid sensor.
REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - vehicles with: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B46:08, B1B46:31, B1B46:1F or B1B46:64 present?

Yes

GO to G10

No	INSTALL a new right outer park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

G10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST H: B1B48:08, B1B48:31, B1B48:1F AND B1B48:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B48:08	Left rear outer sensor: bus signal/message failures	Continuous or on-demand DTC that is set in the PAM when there is a LIN message failure for the left outer park aid sensor.
PAM B1B48:31	Left Rear Outer Sensor: No Signal	Continuous or on-demand DTC that is set in the PAM when no signal is received via LIN for the left outer park aid sensor.
PAM B1B48:1F	Left Rear Outer Sensor: Circuit Open	Continuous or on-demand DTC that is set in the PAM when an intermittent fault is detected via LIN for the left outer park aid sensor.
PAM B1B48:64	Left Rear Outer Sensor: Signal Invalid	Continuous or on-demand DTC that is set in the PAM when there is no response from the left outer park aid sensor.

Possible Sources

Wiring, Terminals or Connectors
Left park aid sensor
PAM

H1 CHECK THE PAM (PARK AID MODULE) DTCS SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for multiple rear park aid sensors?

Yes

GO to H2

No	• For DTCs B1B48:08, B1B48:31, B1B48:1F or B1B48:64, GO to H3 • For information on all other PAM DTCs, REFER to the PAM DTC chart in this section.

H2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion.

Is the rear bumper wiring harness in good condition?

Yes

GO to H3

No	REPAIR or INSTALL a new rear bumper wiring harness.

H3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the Left Outer Park Aid Sensor C4544.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4544-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to H4

No	REPAIR the circuit.

H4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4544-1 C4544-3

Is the voltage greater than 9 volts?

Yes

GO to H5

No	REPAIR the circuit.

H5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4544-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to H6

H6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4544-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to H7

No	REPAIR the circuit.

H7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4544-2 C4544-1

C4544-2 C4544-3

Is the resistance greater than 10000 ohms?

Yes

GO to H8

No	REPAIR the damaged circuits.

H8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C4544-1 C4226A-3

C4544-2 C4226A-16

C4544-3 C4226A-10

Is the resistance less than 3 ohms?

Yes

GO to H9

No	REPAIR the faulty circuit.

H9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226A.

Install a known good sensor for the suspect LHR outer park assist sensor.
REFER TO: Rear Park Assist Sensor (413-13A Park Assist System - Vehicles With: Rear Park Assist System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B48:08, B1B48:31, B1B48:1F or B1B48:64 present?

Yes

GO to H10

No	INSTALL a new left outer park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

H10 CHECK THE 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 pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I: B1B50:08, B1B50:31, B1B50:1F AND B1B50:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B50:08	Left rear inner sensor: bus signal/message failures	Continuous on-demand DTC that is set in the PAM when a LIN message failure is detected for the LHR inner park assist sensor.
PAM B1B50:31	Left Rear Inner Sensor: No Signal	Continuous on-demand DTC that is set in the PAM when no signal is received over LIN for the LHR inner park assist sensor.
PAM B1B50:1F	Left Rear Inner Sensor: Circuit Open	Continuous on-demand DTC that is set in the PAM when an intermittent LIN fault is detected for the LHR inner park assist sensor.
PAM B1B50:64	Left Rear Inner Sensor: Signal Invalid	Continuous on-demand DTC that is set in the PAM when the LHR inner park assist sensor does not respond.

Possible Sources

Wiring, Terminals or Connectors
LHR inner park assist sensor
PAM

I1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK ASSIST MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for multiple rear park aid sensors?

Yes

GO to I2.

No	• For DTC B1B50:08, B1B50:31, B1B50:1F or B1B50:64 GO to I3 • For information on all other PAM DTCs, REFER TO the PAM. DTC Chart in this section.

I2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for breaks, short circuits, ground faults or corrosion.

Is the rear bumper wiring harness in good condition?

Yes

GO to I3

No	REPAIR or INSTALL a new rear bumper wiring harness.

I3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the LHR inner park assist sensor C4545.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4545-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to I4

No	REPAIR the circuit.

I4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4545-1 C4545-3

Is the voltage greater than 9 volts?

Yes

GO to I5

No	REPAIR the circuit.

I5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226A.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4545-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to I6

I6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4545-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to I7

No	REPAIR the circuit.

I7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C4545-2 C4545-1

C4545-2 C4545-3

Is the resistance greater than 10000 ohms?

Yes

GO to I8

No	REPAIR the damaged circuits.

I8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C4545-1 C4226A-3

C4545-2 C4226A-6

C4545-3 C4226A-10

Is the resistance less than 3 ohms?

Yes

GO to I9

No	REPAIR the faulty circuit.

I9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226A.

Install a known good sensor for the suspect LHR inner park assist sensor.
REFER TO: Rear Park Assist Sensor (413-13A Park Assist System - Vehicles With: Rear Park Assist System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B50:08, B1B50:31, B1B50:1F or B1B50:64 present?

Yes

GO to I10

No	INSTALL a new left inner park aid sensor. REFER TO: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

I10 CHECK THE 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 pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J: B1B36:08, B1B36:31, B1B36:1F AND B1B36:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B36:08	Right front outer sensor: bus signal/message failures	Continuous on-demand DTC that is set in the PAM when a LIN message failure is detected for the RHF outer park assist sensor.
PAM B1B36:31	Right Front Outer Sensor: No Signal	Continuous on-demand DTC that is set in the PAM when no signal is received over LIN for the RHF outer park assist sensor.
PAM B1B36:1F	Right Front Outer Sensor: Circuit Open	Continuous on-demand DTC that is set in the PAM when an intermittent LIN fault is detected for the RHF outer park assist sensor.
PAM B1B36:64	Right Front Outer Sensor: Signal Invalid	Continuous on-demand DTC that is set in the PAM when the RHF outer park assist sensor does not respond.

Possible Sources

Wiring, Terminals or Connectors
RHF outer park assist sensor
PAM

J1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK ASSIST MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for more than one front parking aid sensor?

Yes

GO to J2

No	• For DTC B1B36:08, B1B36:31, B1B36:1F or B1B36:64 GO to J3 • For information on all other PAM DTCs, REFER TO the PAM. DTC Chart in this section.

J2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion.

Is the front bumper wiring harness in good condition?

Yes

GO to J3

No	REPAIR or INSTALL a new front bumper wiring harness.

J3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the RHF outer park assist sensor C1431.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1431-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to J4

No	REPAIR the circuit.

J4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1431-1 C1431-3

Is the voltage greater than 9 volts?

Yes

GO to J5

No	REPAIR the circuit.

J5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1431-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to J6

J6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1431-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to J7

No	REPAIR the circuit.

J7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUITS

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1431-2 C1431-1

C1431-2 C1431-3

Is the resistance greater than 10000 ohms?

Yes

GO to J8

No	REPAIR the damaged circuits.

J8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C1431-1 C4226B-2

C1431-2 C4226B-3

C1431-3 C4226B-12

Is the resistance less than 3 ohms?

Yes

GO to J9

No	REPAIR the faulty circuit.

J9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226B.

Install a known good sensor for the suspect RHF outer park assist sensor.
REFER TO: Front Park Assist Sensor (413-13A Park Assist System - Vehicles With: Rear Park Assist System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B36:08, B1B36:31, B1B36:1F or B1B36:64 present?

Yes

GO to J10

No	INSTALL a new RHF outer parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

J10 CHECK THE 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 pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K: B1B38:08, B1B38:31, B1B38:1F AND B1B38:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B38:08	Right front inner sensor: bus signal/message failures	Continuous on-demand DTC that is set in the PAM when a LIN message failure is detected for the RHF inner park assist sensor.
PAM B1B38:31	Right Front Inner Sensor: No Signal	Continuous on-demand DTC that is set in the PAM when no signal is received over LIN for the RHF inner park assist sensor.
PAM B1B38:1F	Right Front Inner Sensor: Circuit Open	Continuous on-demand DTC that is set in the PAM when an intermittent LIN fault is detected for the RHF inner park assist sensor.
PAM B1B38:64	Right Front Inner Sensor: Signal Invalid	Continuous on-demand DTC that is set in the PAM when the LHF inner park assist sensor does not respond.

Possible Sources

Wiring, Terminals or Connectors
RHF inner park assist sensor
PAM

K1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK ASSIST MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for more than one front parking aid sensor?

Yes

GO to K2

No	• For diagnostic trouble codes (DTC) B1B38:08, B1B38:31, B1B38:1F or B1B38:64, GO to K3. • For information on all other PAM diagnostic trouble codes (DTC), REFER to the PAM DTC chart in this section.

K2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion.

Is the front bumper wiring harness in good condition?

Yes

GO to K3

No	REPAIR or INSTALL a new front bumper wiring harness.

K3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the RHF Inner Park Aid Sensor C1430.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1430-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to K4

No	REPAIR the circuit.

K4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1430-1 C1430-3

Is the voltage greater than 9 volts?

Yes

GO to K5

No	REPAIR the circuit.

K5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1430-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to K6

K6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1430-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to K7

No	REPAIR the circuit.

K7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1430-2 C1430-1

C1430-2 C1430-3

Is the resistance greater than 10000 ohms?

Yes

GO to K8

No	REPAIR the damaged circuits.

K8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C1430-1 C4226B-2

C1430-2 C4226B-9

C1430-3 C4226B-12

Is the resistance less than 3 ohms?

Yes

GO to K9

No	REPAIR the faulty circuit.

K9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226B.

Install a known good RHF Inner Park Aid Sensor in place of the suspect sensor.
REFER to: Front Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B38:08, B1B38:31, B1B38:1F or B1B38:64 present?

Yes

GO to K10

No	INSTALL a new RHF inner parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

K10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: B1B40:08, B1B40:31, B1B40:1F AND B1B40:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B40:08	Left Front Outer Sensor: Bus Signal/Message Failures	Continuous on-demand DTC that is set in the PAM when there is no message received over LIN from the LHF Outer Park Aid Sensor.
PAM B1B40:31	Left Front Outer Sensor: No Signal	Continuous on-demand DTC that is set in the PAM when no signal is received over LIN from the LHF Outer Park Aid Sensor.
PAM B1B40:1F	Left Front Outer Sensor: Circuit Open	Continuous on-demand DTC that is set in the PAM when an intermittent fault is detected in LIN for the LHF Outer Park Aid Sensor.
PAM B1B40:64	Left Front Outer Sensor: Signal Invalid	Continuous on-demand DTC that is set in the PAM when there is no response from the LHF Outer Park Aid Sensor.

Possible Sources

Wiring, Terminals or Connectors
Left park aid sensor
PAM

L1 CHECK THE PAM (PARK AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for more than one front parking aid sensor?

Yes

GO to L2

No	• For diagnostic trouble codes (DTC) B1B40:08, B1B40:31, B1B40:1F or B1B40:64, GO to L3. • For information on all other PAM diagnostic trouble codes (DTC), REFER to the PAM DTC chart in this section.

L2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion.

Is the front bumper wiring harness in good condition?

Yes

GO to L3

No	REPAIR or INSTALL a new front bumper wiring harness.

L3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the LHF Outer Park Aid Sensor C1428.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1428-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to L4

No	REPAIR the circuit.

L4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1428-1 C1428-3

Is the voltage greater than 9 volts?

Yes

GO to L5

No	REPAIR the circuit.

L5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1428-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to L6

L6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1428-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to L7

No	REPAIR the circuit.

L7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1428-2 C1428-1

C1428-2 C1428-3

Is the resistance greater than 10000 ohms?

Yes

GO to L8

No	REPAIR the damaged circuits.

L8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C1428-1 C4226B-2

C1428-2 C4226B-10

C1428-3 C4226B-12

Is the resistance less than 3 ohms?

Yes

GO to L9

No	REPAIR the faulty circuit.

L9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226B.

Install a known good LHF Outer Park Aid Sensor in place of the suspect sensor.
REFER to: Front Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B40:08, B1B40:31, B1B40:1F or B1B40:64 present?

Yes

GO to L10

No	INSTALL a new left outer parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

L10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: B1B42:08, B1B42:31, B1B42:1F AND B1B42:64

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B42:08	Left Front Inner Sensor: Bus Signal/Message Failures	Continuous on-demand DTC that is set in the PAM when there is no message received over LIN from the LHF Inner Park Aid Sensor.
PAM B1B42:31	Left Front Inner Sensor: No Signal	Continuous on-demand DTC that is set in the PAM when no signal is received over LIN from the LHF Inner Park Aid Sensor.
PAM B1B42:1F	Left Front Inner Sensor: Circuit Open	Continuous on-demand DTC that is set in the PAM when an intermittent fault is detected in LIN for the LHF Inner Park Aid Sensor.
PAM B1B42:64	Left Front Inner Sensor: Signal Invalid	Continuous on-demand DTC that is set in the PAM when the LHF Inner Park Aid Sensor does not respond.

Possible Sources

Wiring, Terminals or Connectors
LHF Inner Park Aid Sensor
PAM

M1 CHECK THE PAM (PARK AID MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are DTCs recorded for more than one front parking aid sensor?

Yes

GO to M2

No	• For diagnostic trouble codes (DTC) B1B42:08, B1B42:31, B1B42:1F or B1B42:64, GO to M3. • For information on all other PAM diagnostic trouble codes (DTC), REFER to the PAM DTC chart in this section.

M2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for breaks, short circuits, grounds or corrosion.

Is the front bumper wiring harness in good condition?

Yes

GO to M3

No	REPAIR or INSTALL a new front bumper wiring harness.

M3 CHECK THE SENSOR VOLTAGE

Ignition OFF.

Disconnect the LHF Inner Park Aid Sensor C1429.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1429-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to M4

No	REPAIR the circuit.

M4 CHECK THE SENSOR GROUND

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1429-1 C1429-3

Is the voltage greater than 9 volts?

Yes

GO to M5

No	REPAIR the circuit.

M5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect the PAM C4226B.

The ignition is on.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1429-2 Ground

Is there voltage present?

Yes

REPAIR the damaged circuits.

GO to M6

M6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1429-2 Ground

Is the resistance greater than 10000 Ohms?

Yes

GO to M7

No	REPAIR the circuit.

M7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT

Action:
Click to display the connectors

Positive lead Measurement/Action Negative lead

C1429-2 C1429-1

C1429-2 C1429-3

Is the resistance greater than 10000 ohms?

Yes

GO to M8

No	REPAIR the damaged circuits.

M8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Action:

Positive lead Measurement/Action Negative lead

C1429-1 C4226B-2

C1429-2 C4226B-4

C1429-3 C4226B-12

Is the resistance less than 3 ohms?

Yes

GO to M9

No	REPAIR the faulty circuit.

M9 INSTALL A KNOWN GOOD SENSOR

Connect the PAM C4226B.

Install a known good LHF Inner Park Aid Sensor in place of the suspect sensor.
REFER to: Front Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the PAM diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B42:08, B1B42:31, B1B42:1F or B1B42:64 present?

Yes

GO to M10

No	INSTALL a new LHF inner parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

M10 CHECK THE PAM (PARK AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: B1B44:96, B1B46:96, B1B48:96, B1B50:96

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B44:96	Right Rear Outer Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the RHR Outer Park Aid Sensor has an internal fault or has an incorrect decay time.
PAM B1B46:96	Right Rear Inner Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the RHR Inner Park Aid Sensor has an internal fault or has an incorrect decay time.
PAM B1B48:96	Left Rear Outer Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the LHR Outer Park Aid Sensor has an internal fault or has an incorrect decay time.
PAM B1B50:96	Left Rear Inner Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the internal LHR parking aid sensor has an internal malfunction or has an incorrect decay time.

Possible Sources

Rear Park Aid Sensor
PAM

N1 CHECK THE PAM (PARKING AID MODULE) SELF-TEST DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are there parking aid system Diagnostic Trouble Codes (DTCs) other than B1B44:96, B1B46:96, B1B48:96 or B1B50:96?

Yes

For all other DTCs, GO to the DTC Chart in this section.

GO to N2

N2 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH NO OBJECTS BEHIND THE VEHICLE

Clean the rear bumper and sensors with high-pressure water.

Make sure that the parking aid sensors are installed flush with their face plate.

The ignition is on.

Using the diagnostic scan tool,
Access the PAM and monitor the LRI_DIST (cm) PID

Access the PAM and monitor the LRO_DIST (cm) PID

Access the PAM and monitor the RRI_DIST (cm) PID

Access the PAM and monitor the RRO_DIST (cm) PID
The PID shows 2540 mm (100 inches) with a correctly functioning sensor.

Does the PID show 2540 mm (100 inches)?

Yes

GO to N3

GO to N4

N3 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH A TEST OBJECT BEHIND THE VEHICLE

Using the diagnostic scan tool,
Access the PAM and monitor the LRI_DIST (cm) PID

Access the PAM and monitor the LRO_DIST (cm) PID

Access the PAM and monitor the RRI_DIST (cm) PID

Access the PAM and monitor the RRO_DIST (cm) PID

While monitoring the parameter identifications (PIDs), move the test object into and out of the detection zone of each sensor. For example, test object.
REFER TO: Azimuth System Check (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, General Procedures).

Does the PID approximately match the distance from the test object to the rear bumper of the vehicle?

Yes

GO to N5

GO to N4

N4 CHECK THE PARKING AID SENSORS

Ignition OFF.

Install a known good parking aid sensor in place of the suspect parking aid sensor.
REFER TO: Rear Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is the concern still present?

Yes

GO to N5

No	INSTALL a new rear parking aid sensor. REFER TO: Rear Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, Removal and Installation).

N5 CHECK THE PAM (PARKING AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST O: B1B36:96, B1B38:96, B1B40:96, B1B42:96

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid - System Operation and Component Description (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B36:96	Right Front Outer Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the external RHF parking aid sensor has an internal malfunction or has an incorrect decay time.
PAM B1B38:96	Right Front Inner Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the internal RHF parking aid sensor has an internal malfunction or has an incorrect decay time.
PAM B1B40:96	Left Front Outer Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the external LHF parking aid sensor has an internal malfunction or has an incorrect decay time.
PAM B1B42:96	Left Front Inner Sensor: Internal Component Malfunction	Continuous memory and on-demand DTC that is set when the internal LHF parking aid sensor has an internal malfunction or has an incorrect decay time.

Possible Sources

Front Parking Aid sensor
PAM

O1 CHECK THE PAM (PARKING AID MODULE) SELF-TEST DIAGNOSTIC TROUBLE CODES (DTCS)

Using the scan tool, perform the PAM self-test.

Check the parking aid system Diagnostic Trouble Codes (DTCs).

Are there parking aid system Diagnostic Trouble Codes (DTCs) other than B1B36:96, B1B38:96, B1B40:96 or B1B42:96?

Yes

For all other DTCs, GO to the DTC Chart in this section.

GO to O2

O2 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH NO OBJECTS IN FRONT OF THE VEHICLE

Clean the front bumper and sensors with high-pressure water.

Make sure that the parking aid sensors are installed flush with their face plate.

The ignition is on.

Using the diagnostic scan tool,
Access the PAM and monitor the LFI_DIST (cm) PID

Access the PAM and monitor the LFO_DIST (cm) PID

Access the PAM and monitor the RFI_DIST (cm) PID

Access the PAM and monitor the RFO_DIST (cm) PID
The PID shows 2540 mm (100 inches) with a correctly functioning sensor.

Does the PID show 2540 mm (100 inches)?

Yes

GO to O3

GO to O4

O3 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH A TEST OBJECT IN FRONT OF THE VEHICLE

Using the diagnostic scan tool,
Access the PAM and monitor the LFI_DIST (cm) PID

Access the PAM and monitor the LFO_DIST (cm) PID

Access the PAM and monitor the RFI_DIST (cm) PID

Access the PAM and monitor the RFO_DIST (cm) PID

While monitoring the parameter identifications (PIDs), move the test object into and out of the detection zone of each sensor. For example, test object.
REFER TO: Azimuth System Check (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, General Procedures).

Does the PID approximately match the distance from the test object to the front bumper of the vehicle?

Yes

GO to O5

GO to O4

O4 CHECK THE PARKING AID SENSORS

Ignition OFF.

INSTALL a new suspect parking aid sensor.
REFER TO: Front Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Front Parking Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs). Repeat the self-test. Operate the system and verify the concern is still present.

Is the concern still present?

Yes

GO to O5

No	INSTALL a new front parking aid sensor. REFER TO: Front Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Front Parking Aid System, Removal and Installation).

O5 CHECK THE PAM (PARKING AID MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST P: B1B36:98, B1B38:98, B1B40:98, B1B42:98

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B36:97	Right Front Outer Sensor: Component or System Operation Obstructed or Blocked	Continuous memory and on-demand DTC that is set when the external RHF parking aid sensor detects an obstruction.
PAM B1B36:98	Right Front Outer Sensor: Component or System Overheated	Continuous memory and on-demand DTC that is set when the external RHF parking aid sensor detects overheating.
PAM B1B38:97	Right Front Inner Sensor: Component or System Operation Obstructed or Blocked	Continuous memory and on-demand DTC that is set when the internal RHF parking aid sensor detects an obstruction.
PAM B1B38:98	Right Front Inner Sensor: Component or System Overheated	Continuous memory and on-demand DTC that is set when the internal RHF parking aid sensor detects overheating.
PAM B1B40:97	Left Front Outer Sensor: Component or System Operation Obstructed or Blocked	Continuous memory and on-demand DTC that is set when the external LHF parking aid sensor detects an obstruction.
PAM B1B40:98	Left Front Outer Sensor: Component or System Overheated	Continuous memory and on-demand DTC that is set when the external LHF parking aid sensor detects overheating.
PAM B1B42:97	Left Front Inner Sensor: Component or System Operation Obstructed or Blocked	Continuous memory and on-demand DTC that is set when the internal LHF parking aid sensor detects an obstruction.
PAM B1B42:98	Left Front Inner Sensor: Component or System Overheated	Continuous on-demand DTC that is set when the LHF internal parking aid sensor detects overheating.

Possible Sources

Component Damage
Front bumper or sensor damage
Front Parking Aid sensor
PAM

P1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK AID MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are any parking aid diagnostic trouble codes (DTCs) recorded?

Yes

For DTCs B1B44:98, B1B46:98, B1B48:98 or B1B50:98; GO to P2
For DTCs B1B44:97, B1B46:97, B1B48:97 or B1B50:97; GO to P4
For all other DTCs, REFER to the DTC chart in this section.

GO to P3

P2 CHECK THE PARK AID SENSOR FOR VENTILATION

Clean the front bumper and sensors with high-pressure water.

Make sure the suspect Parking Aid sensor(s) is installed flush in the fascia.

Check for damage, debris or any aftermarket accessories that may obstruct sensor ventilation.

Is there any damage or component obstructing the sensor(s) ventilation?

Yes

REPAIR or REMOVE components as necessary.

GO to P4

P3 CHECK THE PARK AID SENSOR FOR AN OBSTRUCTION

Clean the rear bumper and sensors with high-pressure water.

Make sure the suspect Parking Aid sensor(s) is installed flush in the fascia.

Check for damage, debris or any non-original air deflectors that may restrict sensor operation.

Is there any damage or non-original parts blocking the sensor(s)?

Yes

REPAIR or REMOVE components as necessary.

GO to P4

P4 CHECK THE PARK AID SENSORS

Ignition OFF.

Install a known good sensor in place of the suspect park aid sensor.
REFER to: Front Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is the concern still present?

Yes

GO to P5

No	The concern was a malfunctioning Parking Aid sensor. The system now operates correctly.

P5 CHECK THE PAM (PARK AID MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Q: B1B44:98, B1B46:98, B1B48:98, B1B50:98

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM B1B44:97	Right Rear Outer Sensor: Component or System Operation Obstructed or Blocked	Continuous on-demand DTC that is set when the right outer park aid sensor detects an obstruction.
PAM B1B44:98	Right Rear Outer Sensor: Component or System Overheated	Continuous on-demand DTC that is set when the right outer park aid sensor detects overheating.
PAM B1B46:97	Right Rear Inner Sensor: Component or System Operation Obstructed or Blocked	Continuous on-demand DTC that is set when the right inner park aid sensor detects an obstruction.
PAM B1B46:98	Right Rear Inner Sensor: Component or System Overheated	Continuous on-demand DTC that is set when the right inner park aid sensor detects overheating.
PAM B1B48:97	Left Rear Outer Sensor: Component or System Operation Obstructed or Blocked	Continuous on-demand DTC that is set when the left outer park aid sensor detects an obstruction.
PAM B1B48:98	Left Rear Outer Sensor: Component or System Overheated	Continuous on-demand DTC that is set when the left outer park aid sensor detects overheating.
PAM B1B50:97	Left Rear Inner Sensor: Component or System Operation Obstructed or Blocked	Continuous on-demand DTC that is set when the LHR internal park aid sensor detects an obstruction.
PAM B1B50:98	Left Rear Inner Sensor: Component or System Overheated	Continuous on-demand DTC that is set when the LHR internal park aid sensor detects overheating.

Possible Sources

Component Damage
Rear bumper or sensor damage
Rear Park Aid Sensor
PAM

Q1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK AID MODULE) SELF-TEST

The ignition is on.

Using the scan tool, perform the PAM self-test.

Check the park aid system DTCs during the self-test.

Are any parking aid diagnostic trouble codes (DTCs) recorded?

Yes

For DTCs B1B44:98, B1B46:98, B1B48:98 or B1B50:98; GO to Q2
For DTCs B1B44:97, B1B46:97, B1B48:97 or B1B50:97; GO to Q4
For all other DTCs, REFER to the DTC chart in this section.

GO to Q3

Q2 CHECK THE PARK AID SENSOR FOR CORRECT VENTILATION

Clean the rear bumper and sensors with high-pressure water.

Make sure the suspect park aid sensor(s) has a heat shield and is installed flush with the fascia.

Check for damage, debris or any aftermarket accessories that may obstruct sensor ventilation.

Check for aftermarket exhaust or other aftermarket components.

Is there any damage or component obstructing the sensor(s) ventilation?

Yes

REPAIR or REMOVE components as necessary.

GO to Q4

Q3 CHECK THE PARK AID SENSOR FOR AN OBSTRUCTION

Clean the rear bumper and sensors with high-pressure water.

Make sure the suspect Parking Aid sensor(s) is installed flush in the fascia.

Check for damage, debris or any non-original air deflectors that may restrict sensor operation.

Check for aftermarket exhaust or other aftermarket components.

Is there any damage or non-original parts blocking the sensor(s)?

Yes

REPAIR or REMOVE components as necessary.

GO to Q4

Q4 CHECK THE PARK AID SENSORS

Ignition OFF.

Install a known good parking aid sensor in place of the suspect parking aid sensor.
REFER TO: Rear Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, Removal and Installation).

The ignition is on.

Using the diagnostic scan tool, clear the DTCs and repeat the PAM self-test.

Is the concern still present?

Yes

GO to Q5

No	The concern was a malfunctioning Parking Aid sensor. The system now operates correctly.

Q5 CHECK THE PAM (PARK AID MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST R: CONTINUOUS OR INTERMITTENT TONE WITH NO OBSTACLES OR DTCS PRESENT

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

Normal Operation and Fault Symptoms

REFER TO: Parking Aid System - System Operation and Component Description (413-13C Parking Aid System - Vehicles With: Active Park Assist, Description and Operation).

Possible Sources

Dirty or iced Park Assist sensor(s)
Park aid sensor(s) incorrectly installed
Park aid sensor alignment
Isolator ring is missing, damaged or displaced

R1 CONFIRM THE CONCERN

Confirm the concern

Is there a continuous or intermittent audible tone with no obstruction or diagnostic trouble codes?

Yes

Park aid sensor(s) dirty or iced. CLEAN the rear bumper and sensors with high-pressure water.
Ice between the park aid sensor(s) and bezel(s). ALLOW the ice between the park aid sensor(s) and bezel(s) to completely thaw.
Park aid sensors incorrectly seated in the rear bumper. INSTALL the park aid sensor(s) into the bezel(s) correctly.
Park aid sensor(s) not properly aligned. PERFORM the lift system check.
REFER to: Lift System Check (413-13A Park Aid System - Vehicles With: Rear Park Aid System, General Procedures). Park aid sensor isolation ring(s) missing, damaged or displaced. INSTALL a new park aid sensor.
REFER to: Front Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).
REFER to: Rear Park Aid Sensor (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).

No	The system is currently operating normally.

PINPOINT TEST S: REVERSE BRAKE DEVICE DOES NOT OPERATE OR OPERATES INCORRECTLY

Normal Operation and Fault Symptoms

The Reverse Brake Assist system is disabled if a fault is detected in any of these systems:

ABS, Traction Control or Electronic Stability Control.
Rear Park Aid.
Cross Traffic Alert.
Rear view camera or surround view camera (camera mounting location damage).

The Reverse Brake Assist system is disabled if:

a door or the liftgate is open.
Reverse Brake Assist is turned off.
the rear park assist is turned off.
Cross Traffic Alert is turned off.
Traction Control is turned off.
a trailer is connected.
the battery has been disconnected (EPAS stored values lost).
an ABS or Traction Control event is active.

For additional information, REFER to the Owner's Literature.

Possible Sources

Communication Problem
Park Assist System Concern
ABS system concern

Visual Inspection and Pre-checks

Make sure that Traction Control and Cross Traffic Alert systems are enabled in the vehicle menu.

S1 CHECK COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Do the ABS, PSCM, SODL, SODR and PAM or IPMB modules pass the network test?

Yes

GO to S2

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

S2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, retrieve the Diagnostic Trouble Codes (DTCs) from the ABS, PSCM, SODL, SODR and PAM or IPMB modules.

Are any Diagnostic Trouble Codes (DTCs) retrieved from the ABS, PSCM, SODL, SODR and PAM or IPMB modules?

Yes

REFER to the appropriate workshop manual section for diagnosis of the trouble code.

GO to S3

S3 CHECK PARK ASSIST AND ABS (ANTI-LOCK BRAKE SYSTEM) OPERATION

Make sure that the Park Assist and ABS systems operate correctly.

Are the Park Assist and ABS systems operating correctly?

Yes

The system is currently operating normally.

No	If there are concerns with the Park Assist system, REFER to the DTC or symptom chart in this section. For ABS system concerns, REFER to: Anti-Lock Brake System (ABS) and Electronic Stability Control (206-09 Anti-Lock Brake System (ABS) and Electronic Stability Control, Diagnosis and Testing).

PINPOINT TEST T: U0100:00 U0293:00, U0401:00 OR U0594:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0100:00	Lost Communication with ECM/PCM 'A': No Sub Type Information	Stored in continuous memory in the PAM if data messages received from the PCM via the GWM are not present for 5 seconds or longer.
PAM U0293:00	Loss of communication with Hybrid/EV Powertrain Control Module "A": No Sub Type Information	Stored in continuous memory in the PAM if data messages received from the PCM via the GWM are not present for 5 seconds or longer.
PAM U0401:00	Incorrect Data Received from ECM/PCM 'A': No Sub Type Information	Set in the PAM when the PAM receives invalid network data from the PCM via the GWM for 5 seconds or longer.
PAM U0594:00	Incorrect Data Received from Hybrid/EV Powertrain Control Module 'A': No Sub Type Information	Set in the PAM when the PAM receives invalid network data from the PCM via the GWM for 5 seconds or longer.

Possible Sources

Communication Problem
PAM
GWM
PCM

T1 VERIFY THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to T2

No	Clear the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

T2 CHECK THAT THE DIAGNOSTIC SCAN TOOL COMMUNICATES WITH THE PCM (POWERTRAIN CONTROL MODULE)

Connect the diagnostic scan tool.

Make sure a vehicle session can be established with the diagnostic scan tool.

Can a vehicle communication session be established?

Yes

GO to T3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

T3 CHECK THE PAM (PARK ASSIST MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

The ignition is on.

Using the scan tool, perform the PAM self-test.

Clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Repeat the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.

GO to T4

T4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to T5

T5 PERFORM THE PCM (POWERTRAIN CONTROL MODULE) SELF-TEST

Using the diagnostic scan tool, perform a PCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

CHECK all non-network Diagnostic Trouble Codes (DTCs).
REFER to: Engine Control Systems (303-14C Electronic Engine Controls, Diagnosis and Testing).

GO to T6

T6 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0100:00, U0293:00, U0401:00 or U0594:00 present?

Yes

GO to T7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

T7 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERNS

CHECK the vehicle service history for recent service actions related to the PCM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom present?

Yes

GO to T8

No	The system is currently operating correctly. The concern may have been caused by incorrect component replacement procedures or incorrect module configuration.

T8 CHECK THE PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 U: U0121:00 OR U0415:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0121:00	Lost Communication with Anti-Lock Brake System (ABS) Control Module 'A': No Sub-type Information	Stored in continuous memory in the PAM if data messages received from the ABS module are not present for 5 seconds or longer.
PAM U0415:00	Invalid Data Received from Anti-Lock Brake System (ABS) Control Module A: No Sub Type Information	Set in the PAM when the PAM receives invalid network data from the ABS module via the GWM for 5 seconds or longer.

Possible Sources

Communication Problem
ABS Module
PAM

U1 CHECK CUSTOMER CONCERN

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to U2

No	Clear the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

U2 CHECK COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the ABS module pass the network test?

Yes

GO to U3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

U3 PERFORM THE PAM (PARK ASSIST MODULE) MODULE SELF-TEST

Using a diagnostic scan tool, perform the PAM module self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to U4

U4 PERFORM THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE SELF-TEST

Using the diagnostic scan tool, perform a self-test of the ABS module.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Anti-Lock Brake System (ABS) and Stability Control System (206-09 Anti-Lock Brake System (ABS) and Stability Control System, Diagnosis and Testing).

GO to U5

U5 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a diagnostic scan tool, perform the PAM continuous memory self-test.

Check the PAM continuous memory diagnostic trouble codes (CMDTCs).

Is DTC U0121:00 or U0415:00 present?

Yes

GO to U6

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

U6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERNS

CHECK the vehicle service history for recent service actions related to the ABS module or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to U7

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

U7 CHECK THE 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 pins - install new terminals/pins
- backed-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

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 articles address this concern, INSTALL a new ABS module.
REFER to: Hydraulic Control Unit (HCU) - Vehicles With: Vacuum Brake Booster (206-09 Anti-Lock Brake System (ABS) and Electronic Stability Control, Removal and Installation).

No	The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin concerns.

PINPOINT TEST V: U0131:00 OR U0420:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0131:00	Lost Communication with Power Steering Control Module 'A': No Sub Type Information	Stored in continuous memory in the PAM if data messages received from the PSCM are not present for 5 seconds or longer.
PAM U0420:00	Incorrect Data Received from Power Steering Control Module 'A': No Sub Type Information	Set in the PAM when the PAM receives invalid network data from the PSCM via the GWM for 5 seconds or longer.

Possible Sources

Communication Problem
PSCM
PAM

V1 VERIFY THE CUSTOMER CONCERN

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to Step 2

No	Clear the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

V2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the PSCM pass the network test?

Yes

GO to V3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

V3 PERFORM THE PAM (PARK ASSIST MODULE) MODULE SELF-TEST

Using a diagnostic scan tool, perform the PAM module self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to V4

V4 PERFORM THE PSCM (POWER STEERING CONTROL MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Power Steering (211-02 Power Steering, Diagnosis and Testing).

GO to V5

V5 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a diagnostic scan tool, perform the PAM continuous memory self-test.

Check the PAM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Is DTC U0131:00 or U0420:00 present?

Yes

GO to V6

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

V6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERNS

CHECK the vehicle service history for recent service actions involving the PSCM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to V7

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

V7 CHECK THE PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PSCM connectors.

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

Reconnect the PSCM 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 is required to access the Guided Routine (EPAS)

No	The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin concerns.

PINPOINT TEST W: U0140:00 OR U0422:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0140:00	Lost Communication With Body Control Module: No Sub Type Information	Sets in PAM continuous memory if data messages received from the BCM through the GWM are absent for 5 seconds or longer.
PAM U0422:00	Incorrect Data Received from Body Control Module: No Sub Type Information	Sets in PAM when PAM receives invalid network data from the BCM through the GWM for 5 seconds or longer.

Possible Sources

Communication Problem
GWM concern
BCM
PAM

W1 VERIFY THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to W2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to W3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

W3 PERFORM THE PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to W4

W4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to W5

W5 PERFORM THE BCM (BODY CONTROL MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to W6

W6 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0140:00 OR U0422:00 present?

Yes

GO to W7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

W7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions involving the BCM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to W8

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

W8 CHECK THE BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 X: U0146:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0146:00	Lost Communication with Serial Data Gateway 'A': No Sub Type Information	Sets in PAM continuous memory if data messages received from the GWM are absent for 5 seconds or longer.

Possible Sources

Communication Problem
GWM
PAM

X1 VERIFY THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to X2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

X2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the GWM pass the network test?

Yes

GO to X3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

X3 PERFORM THE PAM (PARK ASSIST MODULE) SELF-TEST

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any diagnostic trouble codes (DTCs) present?

Yes

REFER to the PAM DTC Chart in this section.

GO to X4

X4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to X5

X5 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0146:00 present?

Yes

GO to X6

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

X6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions involving the GWM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to X7

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

X7 CHECK THE GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connectors.

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

Connect the GWM 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 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 Y: U0155:00 OR U0423:82

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0155:00	Lost Communication with Instrument Panel Cluster (IPC) Control Module: No Sub Type Information	Sets in PAM continuous memory if data messages received from the IPC through the GWM are absent for 5 seconds or longer.
PAM U0423:82	Invalid data received from instrument panel control module: active/incorrect sequence counter/not updated	Sets in PAM when PAM does not receive updated park assist data from the IPC for 5 seconds or longer.

Possible Sources

Communication Problem
GWM concern
PCM
PAM

Y1 VERIFY THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to Y2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

Y2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the IPC pass the network test?

Yes

GO to Y3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

Y3 PERFORM THE PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to Y4

Y4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to Y5

Y5 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Instrument Cluster, Message Center and Warning Chimes - Vehicles With: Head-Up Display (HUD) (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).

GO to Y6

Y6 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0155:00 or U0423:82 present?

Yes

GO to Y7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

Y7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions involving the IPC or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to Y8

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

Y8 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF.

Disconnect and inspect the IPC connectors.

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

Connect the IPC 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 IPC. Refer to the appropriate removal and installation procedure in Section 413-01.

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: U0164:00, U0424:00 OR U0424:82

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0164:00	Lost Communication with HVAC Control Module: No Sub Type Information	Sets in PAM continuous memory if data messages received from the HVAC module through the GWM are absent for 5 seconds or longer.
PAM U0424:00	Incorrect Data Received from HVAC Control Module: No Sub Type Information	Sets in PAM when PAM receives invalid network data for outside air temperature from the HVAC module through the GWM for 5 seconds or longer.
PAM U0424:82	Incorrect data received from HVAC control module: active/incorrect sequence counter/not updated	Sets in PAM when PAM does not receive updated outside air temperature data from the HVAC module for 5 seconds or longer.

Possible Sources

Communication Problem
GWM concern
HVAC Module
PAM

Z1 CHECK THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to Z2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

Z2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the HVAC module pass the network test?

Yes

GO to Z3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

Z3 PERFORM THE PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to Z4

Z4 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to Z5

Z5 PERFORM THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE SELF-TEST

Using the scan tool, perform the HVAC module self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Climate Control System - Vehicles With: Electronic Manual Temperature Control (EMTC) (412-00 Climate Control System - General Information, Diagnosis and Testing).

GO to Z6

Z6 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0164:00, U0424:00 or U0424:82 present?

Yes

GO to Z7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

Z7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions involving the HVAC module or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to Z8

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

Z8 CHECK THE HVAC (HEATING, VENTILATION AND AIR CONDITIONING) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the HVAC module connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 no service articles address this concern, INSTALL a new HVAC module.
REFER TO: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).

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

PINPOINT TEST AA: U0428:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0428:00	Invalid Data Received from Steering Wheel Angle Sensor Module: No Subtype Information	Sets in PAM continuous memory if data messages received from the SASM through the GWM are absent for 5 seconds or longer.

Possible Sources

Communication Problem
SASM
PAM

AA1 CHECK THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to AA2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

AA2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the SASM pass the network test?

Yes

GO to AA3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

AA3 PERFORM THE PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to AA4

AA4 PERFORM THE SASM (STEERING ANGLE SENSOR MODULE) SELF-TEST

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

Are there any network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

GO to AA5

AA5 RECHECK THE PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0428:00 present?

Yes

GO to AA6

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

AA6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions involving the SASM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to AA7.

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

AA7 CHECK THE SASM (STEERING ANGLE SENSOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SASM connectors.

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

Connect the SASM 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 SASM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical) Component, 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: U0485:82

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0184:00	Lost Communication With Radio: No Sub Type Information	Set continuously in PAM memory if data messages received from ACM via GWM are absent for 5 seconds or longer.
PAM U0485:82	Incorrect Data Received from Radio: Active/Incorrect Sequence Counter/Not Updated	Set in PAM when PAM does not receive data from ACM for 5 seconds or longer.

Possible Sources

Communication Problem
GWM concern
ACM
PAM

AB1 CHECK THE CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to AB2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

AB2 CHECK THE COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the ACM pass the network test?

Yes

GO to AB3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

AB3 PERFORM PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.

GO to AB4

AB4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to AB5

AB5 PERFORM THE ACM (FRONT AUDIO CONTROL MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Information and Entertainment System (415-00 Information and Entertainment System, General Information, Diagnosis and Testing).

GO to AB6

AB6 RECHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0485:82 present?

Yes

GO to AB7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

AB7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions related to ACM, GWM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to AB8.

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

AB8 CHECK ACM (FRONT AUDIO CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ACM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 AC: U0212:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0212:00	Lost Communication with Steering Column Control Module: No Sub Type Information	Set continuously in PAM memory if data messages received from SCCM via GWM are absent for 5 seconds or longer.

Possible Sources

Communication Problem
SCCM
PAM

AC1 CHECK CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to AC2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

AC2 CHECK THE NETWORK COMMUNICATION

Using a scan tool, perform the network test.

Does the SCCM pass the network test?

Yes

GO to AC3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

AC3 PERFORM PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

GO to AC4

AC4 PERFORM SCCM (STEERING COLUMN CONTROL MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

GO to AC5

AC5 RECHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0212:00 present?

Yes

GO to AC6

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

AC6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions related to SCCM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to AC7

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

AC7 CHECK SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 AD: U0252:00 OR U0553:82

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0252:00	Rear Lighting Control Module "B" Communication Lost: No Sub-Type Information	Set continuously in PAM memory if data messages received from TRM via GWM are absent for 5 seconds or longer.
PAM U0553:82	Invalid data received from the lighting control module - rear letter "B": active/invalid sequence counter/not updated	Set in PAM when PAM does not receive updated trailer presence data from TRM for 5 seconds or longer.

Possible Sources

Network communication fault
GWM concern
TRM
PAM

AD1 CONFIRM CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to AD2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

AD2 CHECK COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the TRM pass the network test?

Yes

GO to AD3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

AD3 PERFORM PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.

GO to AD4

AD4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

GO to AD5

AD5 PERFORM TRM (TRAILER MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Trailer Lamps (417-01 Exterior Lighting, Diagnosis and Testing).

GO to AD6

AD6 RECHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0252:00 or U0553:82 present?

Yes

GO to AD7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

AD7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions related to TRM, GWM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to AD8

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

AD8 CHECK TRM (TRAILER MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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: U0554:00 OR U0554:82

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0253:00	Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information	Set continuously in PAM memory if data messages received from APIM via GWM are absent for 5 seconds or longer.
PAM U0554:00	Invalid Data Received from Auxiliary Protocol Interface Module: No Sub Type Information	Set in PAM when PAM receives invalid network data from APIM via GWM for 5 seconds or longer.
PAM U0554:82	Invalid data received from the auxiliary protocol interface module: active/invalid sequence counter/not updated	Set in PAM when PAM does not receive updates from APIM for 5 seconds or longer.

Possible Sources

Communication Problem
GWM concern
APIM
PAM

AE1 CHECK CUSTOMER CONCERN

The ignition is on.

Make sure the observed symptom is present.

Is the observed symptom present?

Yes

GO to AE2

No	CLEAR the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent fault condition.

AE2 CHECK COMMUNICATION NETWORK

Using a scan tool, perform the network test.

Does the APIM pass the network test?

Yes

GO to AE3

No	REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

AE3 PERFORM PAM (PARK ASSIST MODULE) SELF-TEST

Using the scan tool, perform the PAM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER to the PAM DTC Chart in this section.

No	GO to AE4.

AE4 CHECK GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Using the diagnostic scanner, check the GWM continuous memory diagnostic trouble codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).

No	GO to AE5.

AE5 PERFORM APIM (SYNCHRONIZATION MODULE) SELF-TEST

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

Are there any non-network diagnostic trouble codes (DTCs)?

Yes

REFER TO: Information and Entertainment System (415-00 Information and Entertainment System, General Information, Diagnosis and Testing).

No	GO to AE6.

AE6 RECHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Ignition OFF.

The ignition is on.

Wait 10 seconds.

Using a scan tool, perform a continuous memory self-test.

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0554:00 or U0554:82 present?

Yes

GO to AE7

No	The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent fault.

AE7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS

CHECK the vehicle service history for recent service actions related to APIM or PAM. If recent service history is found:
- make sure the correct replacement module was installed
  - Vehicle component assembly may be used to verify correct component installation.
- make sure the replacement module configuration was correct
  - reconfigure the module using the original data if the previous configuration is suspected
- make sure the module was not obtained from a similar vehicle and installed on the customer's vehicle
  - Reinstall the replaced module in the original vehicle and obtain a new replacement module.
  - if a new replacement module has been installed, PERFORM the PMI using the Module Programming Tool.

Operate the system and determine whether the observed symptom persists.

Is the observed symptom still present?

Yes

GO to AE8

No	The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.

AE8 CHECK APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the APIM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 AF: U1000:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U1000:00	Solid State Driver Protection Active - Driver Disabled: No Sub Type Information	Set in PAM when PAM continuously draws excessive current for the park assist audible system.

Possible Sources

Wiring
Park Assist Sensor
PAM

AF1 CHECK PAM (PARK ASSIST MODULE) SELF-TEST DIAGNOSTIC TROUBLE CODES (DTCS)

The ignition is on.

Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using the scan tool, perform the PAM self-test.

Are any DTCs other than U1000:00 retrieved?

Yes

RETRIEVE and REPAIR all other PAM diagnostic trouble codes (DTCs). REFER to the PAM DTC Chart in this section.

No	GO to AF2.

AF2 CHECK PAM (PARK ASSIST MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PAM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- backed-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 a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AG: U2024:00, U2100:00 OR U2101:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U2024:41	Control Module Calibration Data: General Checksum Error	Set in PAM due to a checksum error.
PAM U2100:00	Initial Configuration Not Complete: No Sub Type Information	Set in PAM due to incomplete or incorrect PMI procedures.
PAM (21:00)	Control Module Configuration Incompatible: No Sub Type Information	Set in PAM due to incomplete or incorrect PMI procedures.

Possible Sources

AG1 CHECK VEHICLE HISTORY FOR RECENT SERVICE ACTIONS

Check the vehicle history for any recent service actions related to PAM.

Have any service actions been performed?

Yes

REPEAT the PMI as directed by the diagnostic scan tool.

GO to AG2

AG2 MODULE RECONFIGURATION

The ignition is on.

Using the diagnostic scan tool, perform the PMI as directed by the diagnostic scan tool.

Verify that the PAM is operating correctly.

Is the PAM operating correctly?

Yes

The system is currently operating correctly. The concern may have been caused by incomplete or incorrect PMI procedures.

No	If the PAM cannot retain configuration data. INSTALL a new PAM, REFER to: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist System, Removal and Installation).

PINPOINT TEST AH: U0300:57, U3000:44, U3000:45, U3000:46 OR U3000:49

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code	Description	Fault Trigger Condition
PAM U0300:57	Internal Control Module Software Incompatibility: Incorrect/Incompatible Software Component	Set in PAM when invalid or incompatible software is detected.
PAM U3000:44	Control Module: Data Memory Failure	Set in PAM when PAM fails a read/write check.
PAM U3000:45	Control module: software memory failure	Set in PAM due to a ROM memory checksum error.
PAM U3000:46	Control module: calibration/parameter memory failure	Set in the PAM when the PAM detects a read and write error in the EEPROM.
PAM U3000:49	Control Module: Internal Electronic Failure	Set in the PAM when the module detects an internal fault.

Possible Sources

AH1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARK ASSIST MODULE) SELF-TEST

The ignition is on.

Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using the scan tool, perform the PAM self-test.

Was DTC U0300:57, U3000:44, U3000:45, U3000:46 or U3000:49 retrieved?

Yes

INSTALL a new PAM,
REFER TO: Park Assist Module (PAM) (413-13A Park Aid System - Vehicles With: Rear Park Aid, Removal and Installation).

No	The system is currently operating correctly.

Diagnosis and Testing - Parking Aid System

Diagnostic Trouble Code (DTC) Chart

Diagnostic Trouble Code Chart

Global Customer Symptom Codes (GCSC) Table

Symptom Chart

Symptom Chart: Park Assist System

Pinpoint Test(s)

Normal Operation and Fault Symptoms

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

DTC Fault Trigger Conditions

Possible Sources

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

Possible Sources

Normal Operation and Fault Symptoms

Possible Sources

Visual Inspection and Pre-checks

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Possible Sources

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions