Ford Explorer Quiz
Electrical

Diagnosis and Testing - Parking Aid System

In this manual: Electrical
General Information — 41Chassis — 173Powertrain — 250Electrical — 303Body and Paint — 331
~160min read

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
IPMB B1303:13 Parking Aid Switch: Circuit Open GO to Pinpoint Test E
IPMB B1303:9E Park Aid Switch: Stuck On GO to Pinpoint Test E
IPMB B1B36:08 Right Front Outer Sensor: Bus Signal/Message Failure GO to Pinpoint Test J
IPMB B1B36:96 Right Front Outer Sensor: Internal Component Malfunction GO TO Pinpoint Test O
IPMB B1B36:98 Right Front Outer Sensor: Component or System Overheated GO to Pinpoint Test P
IPMB B1B38:08 Right Front Inner Sensor: Bus Signal/Message Failure GO to Pinpoint Test K
IPMB B1B38:96 Right Front Inner Sensor: Internal Component Malfunction GO TO Pinpoint Test O
IPMB B1B38:98 Right Front Inner Sensor: Component or System Overheated GO to Pinpoint Test P
IPMB B1B40:08 Left Front Outer Sensor: Bus Signal/Message Failure GO to Pinpoint Test L
IPMB B1B40:96 Left Front Outer Sensor: Internal Component Malfunction GO TO Pinpoint Test O
IPMB B1B40:98 Left Front Outer Sensor: Component or System Overheated GO to Pinpoint Test P
IPMB B1B42:08 Left Front Inner Sensor: Bus Signal/Message Failure GO to Pinpoint Test M
IPMB B1B42:96 Left Front Inner Sensor: Internal Component Malfunction GO TO Pinpoint Test O
IPMB B1B42:98 Left Front Inner Sensor: Component or System Overheated GO to Pinpoint Test P
IPMB B1B44:08 Right Rear Outer Sensor: Bus Signal/Message Failure GO to Pinpoint Test F
IPMB B1B44:96 Right Rear Outer Sensor: Internal Component Malfunction GO to Pinpoint Test N
IPMB B1B44:98 Right Rear Outer Sensor: Component or System Overheated GO to Pinpoint Test Q
IPMB B1B46:08 Right Rear Inner Sensor: Bus Signal/Message Failure GO to Pinpoint Test G
IPMB B1B46:96 Right Rear Inner Sensor: Internal Component Malfunction GO to Pinpoint Test N
IPMB B1B46:98 Right Rear Inner Sensor: Component or System Overheated GO to Pinpoint Test Q
IPMB B1B48:08 Left rear outer sensor: bus signal/message failures GO to Pinpoint Test H
IPMB B1B48:96 Left Rear Outer Sensor: Internal Component Malfunction GO to Pinpoint Test N
IPMB B1B48:98 Left Rear Outer Sensor: Component or System Overheated GO to Pinpoint Test Q
IPMB B1B50:08 Left Rear Inner Sensor: Bus Signal/Message Failure GO to Pinpoint Test I
IPMB B1B50:96 Left Rear Inner Sensor: Internal Component Malfunction GO to Pinpoint Test N
IPMB B1B50:98 Left Rear Inner Sensor: Component or System Overheated GO to Pinpoint Test Q
IPMB B1B54:11 Park Assist Function LED: Short to Ground GO to Pinpoint Test D
IPMB B1B54:15 Park Assist Function LED: Short to Battery or Open GO to Pinpoint Test D
IPMB B1B57:11 Front Sensor Power Supply Circuit: Short to Ground GO to Pinpoint Test B
IPMB B1B58:11 Rear Sensor Power Supply Circuit: Short to Ground GO to Pinpoint Test C
PAM B1303:13 Parking 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 Failure 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 B1B36:96 Right Front Outer Sensor: Internal Component Malfunction GO TO Pinpoint Test O
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 B1B38:96 Right Front Inner Sensor: Internal Component Malfunction GO TO Pinpoint Test O
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 B1B40:96 Left Front Outer Sensor: Internal Component Malfunction GO TO Pinpoint Test O
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 B1B42:96 Left Front Inner Sensor: Internal Component Malfunction GO TO Pinpoint Test O
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: Intermittent Circuit Continuity GO to Pinpoint Test F
PAM B1B44:31 Right Rear Outer Sensor: No Signal 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 B1B46:96 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 failures GO to Pinpoint Test H
PAM B1B48:1F Left Rear Outer Sensor: Intermittent Circuit Continuity GO to Pinpoint Test H
PAM B1B48:31 Left Rear Outer Sensor: No Signal 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 Restricted 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 B1B50:96 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 S
PAM U0121:00 Lost Communication with Anti-Lock Braking System (ABS) Control Module: No Sub-Type Information GO TO Pinpoint Test T
PAM U0131:00 Power Steering Control Module Communication Lost: No Sub-Type Information GO to Pinpoint Test U
PAM U0138:00 All Terrain Control Module Communication Lost: No Subtype 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 AA
PAM U0212:00 Lost Communication with Steering Column Control Module: No Sub Type Information GO to Pinpoint Test AB
PAM U0252:00 Rear Lighting Control Module "B" Communication Lost: No Sub-Type Information GO to Pinpoint Test AC
PAM U0253:00 Lost Communication with Auxiliary Protocol Interface Module: No Sub Type Information GO to Pinpoint Test advertisement
PAM U0293:00 Lost Communication with Hybrid/Electric Transmission Control Module: No Sub Type Information GO to Pinpoint Test S
PAM U0300:57 Internal Control Module Software Incompatibility: Incorrect/Incompatible Software Component GO to Pinpoint Test AG
PAM U0401:00 Incorrect data received from ECM/PCM A: no sub-type information GO to Pinpoint Test S
PAM U0415:00 Incorrect Data Received from Anti-Lock Brake System (ABS) Control Module "A": No Sub-Type Information GO TO Pinpoint Test T
PAM U0420:00 Incorrect Data Received from Power Steering Control Module "A": No Sub-Type Information GO to Pinpoint Test U
PAM U0422:00 Incorrect Data Received from Body Control Module: No Sub Type Information GO to Pinpoint Test W
PAM U0423:00 Invalid Data Received from Instrument Panel Control Module: No Sub-type Information GO to Pinpoint Test Y
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 Invalid 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 U0485:82 Invalid Data Received from Radio: Active/Incorrect Sequence Counter/Not Updated GO TO Pinpoint Test AA
PAM U0553:82 Invalid Data Received from Rear "B" Lighting Control Module: Active/Incorrect Sequence Counter/Not Updated GO to Pinpoint Test AC
PAM U0554:00 Invalid Data Received from Additional Protocol Interface Module: No Sub-type Information GO to Pinpoint Test advertisement
PAM U0554:82 Incorrect Data Received from Accessory Protocol Interface Module: Active/Incorrect Sequence Counter/Not Updated GO to Pinpoint Test advertisement
PAM U0594:00 Incorrect Data Received from Hybrid/Electric Transmission Control Module: No Sub Type Information GO to Pinpoint Test S
PAM U1000:00 Solid State Driver Protection Active - Driver Disabled: No Subtype Information GO TO Pinpoint Test AE
PAM U2024:41 Control Module Calibration Data: General Checksum Error GO TO Pinpoint Test AF
PAM U2100:00 Initial Configuration Not Complete: No Sub Type Information GO TO Pinpoint Test AF
PAM U2101:00 Control Module Configuration Incompatible: No Sub Type Information GO TO Pinpoint Test AF
PAM U3000:44 Control Module: Data Memory Failure GO to Pinpoint Test AG
PAM U3000:45 Control module: software memory failure GO to Pinpoint Test AG
PAM U3000:46 Control Module: Calibration/Parameter Memory Failure GO to Pinpoint Test AG
PAM U3000:49 Control Module: Internal Electronic Failure GO to Pinpoint Test AG

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
  • Park Assist Module (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
  • Dirty or iced Park Assist sensor(s)
 CLEAN the rear bumper and sensors with high-pressure water.
  • Ice between the park assist sensor(s) and the bezel(s)
 ALLOW time for the ice between the park assist sensor(s) and the bezel(s) to melt.
  • Park assist sensors incorrectly secured in the rear bumper
 INSTALL the park assist sensor(s) into the bezel(s) correctly.
  • Park assist sensor(s) not properly aligned
 PERFORM the lift system check.
REFER TO: Lift System Check (413-13A Park Aid - Vehicles With: Rear Park Aid, General Procedures).
  • Park assist sensor isolator ring missing, damaged or displaced
 INSTALL a new park assist sensor.
REFER TO: Front Park Assist Sensor (413-13A Park Aid - Vehicles With: Rear Park Aid, Removal and Installation).
REFER TO: Rear Park Assist Sensor (413-13A Park Aid - Vehicles With: Rear Park Aid, Removal and Installation).
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 R
Parking Aid switch LED inoperative or stays on
  • Refer to Pinpoint Test
 GO to Pinpoint Test D

Pinpoint Test(s)


DIAGNOSTIC PINPOINT TEST A: THE PARKING AID AUDIBLE WARNING DOES NOT OPERATE

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

Normal Operation and Fault Symptoms

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

Possible Sources

  • Parking Aid is disabled
  • Communication Problem
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
  • 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 (PARK AID MODULE) OR THE IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360-DEGREE CAMERA) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Are any Parking Aid Diagnostic Trouble Codes (DTCs) stored?
Yes REFER to the DTC Chart in this section.
No 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 (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).
No 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 (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 For vehicles without 360-degree camera, GO to A8.
For vehicles with 360-degree camera: GO to A7.
No
REFER TO: Instrument Cluster, Message Center and Warning Chimes (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).
A7 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
A8 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC 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
IPMB B1B57:11 Front Sensor Power Supply Circuit: Short to Ground Continuous memory and on-demand DTC that sets when the front sensor power supply circuit is shorted to ground or the return signal circuit.
PAM B1B57:11 Front Sensor Power Supply Circuit: Short to Ground Continuous memory and on-demand DTC that sets when the front sensor power supply circuit is shorted to ground or the return signal circuit.

Possible Sources

  • Wiring, Terminals or Connectors
  • Front Parking Aid sensor
  • Front Active Parking Aid Sensor (if equipped)
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 C1607.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is DTC B1B57:11 present?
Yes GO to B5
No INSTALL a new LHF active park assist sensor.
REFER TO: Front Active Park Assist Sensors (413-13C Park Aid - Vehicles With: Active Park Aid, 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 Park Assist Sensor RHF C1608.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 C3267B (vehicles without 360-degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Action:
    Click to display the connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267B-2 Ground

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-19 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

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267B-2 C3267B-12

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-19 C3676B-6

Is the resistance greater than 10000 Ohms?
Yes For vehicles without 360-degree camera: GO to B11.
For vehicles with 360-degree camera: GO to B10.
No REPAIR the circuit.
B10 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
B11 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC 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 rear park assist sensors through a common circuit.

DTC Fault Trigger Conditions

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

Possible Sources

  • Wiring, Terminals or Connectors
  • Rear Park Aid Sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
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 Assist Sensor C4009.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Assist Sensor C4010.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Assist Sensor C4012.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 Assist Sensor C4011.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is DTC B1B58:11 present?
Yes If the vehicle is equipped with active park assist sensors, GO to C6.
If the vehicle is NOT equipped with active park assist 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) ACTIVE PARK ASSIST SENSOR FOR INTERNAL SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: Right Park Assist Sensor C4421.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is DTC B1B58:11 present?
Yes GO TO C7
No INSTALL a new right active park assist sensor.
REFER TO: Rear Active Park Assist Sensors (413-13C Park Aid - Vehicles With: Active Park Aid, Removal and Installation).
C7 CHECK THE LEFT (REAR LEFT) ACTIVE PARK ASSIST SENSOR FOR INTERNAL SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: Left Active Park Assist Sensor C4420.
  • The ignition is on.
  • Using the diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is DTC B1B58:11 present?
Yes GO TO C8
No INSTALL a new LH park assist sensor.
REFER TO: Rear Park Assist Sensors (413-13C Park Assist System - Vehicles With: Active Park Assist, Removal and Installation).
C8 CHECK THE REAR PARK AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Action:
    Click to display the connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267A-3 Ground

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-17 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

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267A-3 C3267A-10

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-17 C3676B-18

Is the resistance greater than 10000 Ohms?
Yes For vehicles without 360 degree camera, GO to C11.
For vehicles with 360 degree camera, GO to C10.
No REPAIR the circuit.
C10 CHECK IPMB (IMAGE PROCESSING MODULE B) FUNCTIONALITY OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
C11 CHECK PAM (PARK ASSIST MODULE) FUNCTIONALITY 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 in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by 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: Park Aid System Operation and Component Description (413-13A Park Aid - Vehicles With: Rear Park Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB 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.
IPMB 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.
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 (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
  • FCIMB
D1 RETRIEVE DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARK ASSIST MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).

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 PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • The ignition is on.

Does the LED remain illuminated?
Yes REPAIR the circuit.
No For vehicles without 360 degree camera, GO to D7.
For vehicles with 360 degree camera, GO to D8.
D3 CHECK THE LED CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Disconnect FCIMB C2402.
  • Action:
    Click to display the connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C2402-6 C3267A-4

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C2402-6 C3676B-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 PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Disconnect FCIMB C2402.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2402-6 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 FCIMB C2402.
  • Install the fused jumper wire:
    Click to display connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267A-4 Battery positive

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-4 Battery positive

Is the LED illuminated?
Yes For vehicles without 360 degree camera. REMOVE the fusible link. GO to D8.
For vehicles with 360 degree camera. REMOVE the fusible link. GO to D7.
No GO to D6
D6 CHECK FCIMB (FRONT CONTROLS INTERFACE MODULE B) GROUND
  • Disconnect FCIMB C2402.
  • Action
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2402-10 Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new FCIMB.
No REPAIR the circuit.
D7 CHECK IPMB (IMAGE PROCESSING MODULE B) FUNCTIONALITY OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
D8 CHECK PAM (PARK ASSIST MODULE) FUNCTIONALITY 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 in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by 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: Park Aid System Operation and Component Description (413-13A Park Aid - Vehicles With: Rear Park Aid, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1303:13 Park Aid Switch: Circuit Open Continuous DTC that is set in the IPMB when the IPMB detects a stuck open condition in the park assist switch input circuit.
IPMB B1303:9E Park Aid Switch: Stuck On Continuous DTC that is set in the IPMB when the IPMB detects a short to ground in the park assist disable switch input circuit.
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
  • FCIMB
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
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 assist system operates. REFER TO the Owner's Guide.
No GO to E2
E2 CHECK PAM (PARK ASSIST MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE CAMERA) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Are any diagnostic trouble codes (DTCs) present?
Yes For DTC B129E:13 GO to E4.
For DTC B129E:9E GO to E3.
For all other PAM diagnostic trouble codes (DTCs). REFER TO the PAM DTC Chart in this section.
No GO to E5
E3 CHECK THE PARK AID SWITCH CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Disconnect FCIMB C2402.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2402-5 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 PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • Disconnect FCIMB C2402.
  • Action:
    Click to display the connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C2402-5 C3267A-13

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C2402-5 C3676B-3

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
    C2402-10 Ground

Is the resistance less than 3 ohms?
Yes GO to E6
No REPAIR the circuit.
E6 CHECK THE PARK AID SWITCH OPERATION
  • Connect FCIMB C2402.
  • Measure while pressing and releasing the park assist switch:
    Press to display connectors

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3267A-13 Ground

    Click to display the connectors

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C3676B-3 Ground

Is the resistance less than 3 Ohms with the switch pressed and greater than 10,000 Ohms with the switch released?
Yes For vehicles without 360 degree camera: GO to E7.
For vehicles with 360 degree camera: GO to E8.
No INSTALL a new FCIMB.
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
E8 CHECK IPMB (IMAGE PROCESSING MODULE B) FUNCTIONALITY OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST F: B1B44:08, B1B44:31 AND B1B44:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B44:08 Right rear outer sensor: bus signal/message failures On-demand continuous DTC that is set in the IPMB when a LIN message failure occurs for the RH outer park assist sensor.
PAM B1B44:08 Right rear outer sensor: bus signal/message failures On-demand continuous DTC that is set in the PAM when a LIN message is missing for the RH outer park assist sensor.
PAM B1B44:31 Right Rear Outer Sensor: No Signal On-demand continuous DTC that is set in the PAM when a LIN signal is not received for the RH outer park assist sensor.
PAM B1B44:1F Right Rear Outer Sensor: Circuit Open On-demand continuous DTC that is set in the PAM when an intermittent LIN fault is detected for the RH outer park assist sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • Right park aid sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
F1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARK ASSIST MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 or B1B44:1F GO to F3.
• For 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 RH outer park assist sensor C4011.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4011-1 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
    C4011-1 C4011-3

Is the voltage greater than 9 volts?
Yes GO to F5
No REPAIR the circuit.
F5 CHECK SENSOR FOR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4011-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to F6
No REPAIR the circuit.
F6 CHECK SENSOR FOR SHORT TO BATTERY VOLTAGE
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4011-2 Ground

Is there voltage present?
Yes REPAIR the damaged circuits.
No GO to F7
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
    C4011-2 C4011-1
    C4011-2 C4011-3

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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4011-1 C3267A-3
    C4011-2 C3267A-5
    C4011-3 C3267A-10

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4011-1 C3676B-17
    C4011-2 C3676B-11
    C4011-3 C3676B-18

Is the resistance less than 3 ohms?
Yes GO to F9
No REPAIR the faulty circuit.
F9 INSTALL A KNOWN GOOD SENSOR
  • Connect PAM C3267A (vehicles without 360 degree camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B44:08, B1B44:31 or B1B44:1F present?
Yes For vehicles without 360 degree camera, press F10.
For vehicles with 360 degree camera, GO to F11.
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
F11 CHECK IPMB (IMAGE PROCESSING MODULE B) FUNCTIONALITY OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST G: B1B46:08, B1B46:31 AND B1B46:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B46:08 Right rear inner sensor: bus signal/message failures On-demand continuous DTC that is set in the IPMB when a LIN message failure occurs for the RH inner park assist sensor.
PAM B1B46:08 Right rear inner sensor: bus signal/message failures On-demand continuous DTC that is set in the PAM when a LIN message failure occurs for the RH inner park assist sensor.
PAM B1B46:31 Right Rear Inner Sensor: No Signal On-demand continuous DTC that is set in the PAM when a LIN signal is not received for the RH inner park assist sensor.
PAM B1B46:1F Right Rear Inner Sensor: Circuit Open On-demand continuous DTC that is set in the PAM when an intermittent LIN fault is detected for the RH inner park assist sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • Right inner park aid sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
G1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARK ASSIST MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 or B1B46:1F GO to G3.
• For 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 RH inner park assist sensor C4012.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4012-1 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
    C4012-1 C4012-3

Is the voltage greater than 9 volts?
Yes GO to G5
No REPAIR the circuit.
G5 CHECK THE SENSOR FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4012-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to G6
No REPAIR the circuit.
G6 CHECK THE SENSOR FOR A SHORT TO VOLTAGE
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4012-2 Ground

Is there voltage present?
Yes REPAIR the damaged circuits.
No GO to G7
G7 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
    C4012-2 C4012-1
    C4012-2 C4012-3

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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4012-1 C3267A-3
    C4012-2 C3267A-15
    C4012-3 C3267A-10

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4012-1 C3676B-17
    C4012-2 C3676B-10
    C4012-3 C3676B-18

Is the resistance less than 3 ohms?
Yes GO to G9
No REPAIR the faulty circuit.
G9 INSTALL A KNOWN GOOD SENSOR
  • Connect PAM C3267A (vehicles without 360 degree camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B46:08, B1B46:31 or B1B46:1F present?
Yes For vehicles without 360 degree view camera, GO to G10
For vehicles with 360 degree view camera, 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
G11 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST H: B1B48:08, B1B48:31 AND B1B48:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

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

Possible Sources

  • Wiring, Terminals or Connectors
  • Left park aid sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
H1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 diagnostic trouble codes (DTCs) B1B44:08, B1B44:31 or B1B44:1F, GO to H3
• For information on all other PAM DTCs, REFER to 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 parking aid sensor C4009.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4009-1 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
    C4009-1 C4009-3

Is the voltage greater than 9 volts?
Yes GO to H5
No REPAIR the circuit.
H5 CHECK THE SENSOR FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4009-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to H6
No REPAIR the circuit.
H6 CHECK THE SENSOR FOR A SHORT TO VOLTAGE
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4009-2 Ground

Is there voltage present?
Yes REPAIR the damaged circuits.
No GO to H7
H7 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
    C4009-2 C4009-1
    C4009-2 C4009-3

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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4009-1 C3267A-3
    C4009-2 C3267A-16
    C4009-3 C3267A-10

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4009-1 C3676B-17
    C4009-2 C3676B-8
    C4009-3 C3676B-18

Is the resistance less than 3 ohms?
Yes GO to H9
No REPAIR the faulty circuit.
H9 INSTALL A KNOWN GOOD SENSOR
  • Connect PAM C3267A (vehicles without 360 degree camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B48:08, B1B48:31 or B1B48:1F present?
Yes For vehicles without 360 degree view camera, GO to H10
For vehicles with 360 degree view camera, GO to H10.
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).
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
H11 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST I: B1B50:08, B1B50:31 AND B1B50:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B50:08 Left rear inner sensor: bus signal/message failures Continuous on-demand DTC that is set in the IPMB when a LIN message fault occurs for the inner LHR parking aid sensor.
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 fault occurs for the inner LHR parking aid sensor.
PAM B1B50:31 Left Rear Inner Sensor: No Signal Continuous on-demand DTC that is set in the PAM when no LIN signal is received from the inner LHR parking aid 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 occurs for the inner LHR parking aid sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • LHR inner park assist sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
I1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 diagnostic trouble codes (DTCs) B1B50:08, B1B50:31 or B1B50:1F, GO to I3
• For information on all other PAM DTCs, REFER to 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 inner LHR parking aid sensor C4010.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4010-1 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
    C4010-1 C4010-3

Is the voltage greater than 9 volts?
Yes GO to I5
No REPAIR the circuit.
I5 CHECK THE SENSOR FOR A SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4010-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to I6
No REPAIR the circuit.
I6 CHECK THE SENSOR FOR A SHORT TO VOLTAGE
  • Disconnect PAM C3267A (vehicles without 360 degree camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C4010-2 Ground

Is there voltage present?
Yes REPAIR the damaged circuits.
No GO to I7
I7 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
    C4010-2 C4010-1
    C4010-2 C4010-3

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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4010-1 C3267A-3
    C4010-2 C3267A-6
    C4010-3 C3267A-10

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C4010-1 C3676B-17
    C4010-2 C3676B-9
    C4010-3 C3676B-18

Is the resistance less than 3 ohms?
Yes GO to I9
No REPAIR the faulty circuit.
I9 INSTALL A KNOWN GOOD SENSOR
  • Connect PAM C3267A (vehicles without 360 degree camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B50:08, B1B50:31 or B1B50:1F present?
Yes For vehicles without 360 degree view camera, GO to I10
For vehicles with 360 degree view camera, GO to I10
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).
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
I11 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST J: B1B36:08, B1B36:31 AND B1B36:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B36:08 Right front outer sensor: bus signal/message failures Continuous on-demand DTC that is set in the IPMB when a LIN message fault occurs for the outer RHF parking aid sensor.
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 fault occurs for the outer RHF parking aid sensor.
PAM B1B36:31 Right Front Outer Sensor: No Signal Continuous on-demand DTC that is set in the PAM when no LIN signal is received from the outer RHF parking aid 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 occurs for the outer RHF parking aid sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • RHF outer park assist sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
J1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 diagnostic trouble codes (DTCs) B1B36:08, B1B36:31 or B1B36:1F, GO to J3
• For information on all other PAM DTCs, REFER to 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 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 J6
No REPAIR the circuit.
J6 CHECK THE SENSOR FOR A SHORT TO VOLTAGE
  • Disconnect the PAM C3267B (vehicles without 360 degree view camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • 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.
No GO to J7
J7 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
    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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1431-1 C3267B-2
    C1431-2 C3267B-3
    C1431-3 C3267B-12

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1431-1 C3676B-17
    C1431-2 C3676B-24
    C1431-3 C3676B-18

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 C3267B (vehicles without 360 degree view camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B36:08, B1B36:31 or B1B36:1F present?
Yes For vehicles without 360 degree view camera, GO to J10.
For vehicles with 360 degree view camera, GO to J10.
No INSTALL a new outer right parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
J11 CHECK THE IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST K: B1B38:08, B1B38:31 AND B1B38:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B38:08 Right front inner sensor: bus signal/message failures Continuous on-demand DTC that is set in the IPMB when a LIN message fault occurs for the inner RHF parking aid sensor.
PAM B1B38:08 Right front inner sensor: bus signal/message failures Continuous on-demand DTC that is set in the PAM when no LIN message is received from the inner RHF parking aid sensor.
PAM B1B38:31 Right Front Inner Sensor: No Signal Continuous, on-demand DTC that is set in the PAM when there is no LIN signal from the RHF inner parking aid 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 parking aid sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • RHF inner park assist sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
K1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 or B1B38:1F, GO to K3.
• For information on all other PAM diagnostic trouble codes (DTC), REFER to 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 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 K6
No REPAIR the circuit.
K6 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect the PAM C3267B (vehicles without 360 degree view camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • 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.
No GO to K7
K7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT
  • Ignition OFF.
  • 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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1430-1 C3267B-2
    C1430-2 C3267B-9
    C1430-3 C3267B-12

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1430-1 C3676B-17
    C1430-2 C3676B-23
    C1430-3 C3676B-18

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 C3267B (vehicles without 360 degree view camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B38:08, B1B38:31 or B1B38:1F present?
Yes For vehicles without 360 degree view camera, GO to K10.
For vehicles with 360 degree view camera: GO to K10.
No INSTALL a new right inner parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid System - Vehicles With: Rear Parking Aid System, 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
K11 CHECK IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST L: B1B40:08, B1B40:31 AND B1B40:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B40:08 Left Front Outer Sensor: Bus Signal/Message Failures Continuous, on-demand DTC that is set in the IPMB when there is a LIN message failure for the LHF outer parking aid sensor.
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 LIN message for the LHF outer parking aid sensor.
PAM B1B40:31 Left Front Outer Sensor: No Signal Continuous, on-demand DTC that is set in the PAM when there is no LIN signal from the LHF outer parking aid sensor.
PAM B1B40:1F Left Front Outer Sensor: Circuit Open Continuous, on-demand DTC that is set in the PAM when an intermittent LIN fault is detected for the LHF outer parking aid sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • Left park aid sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
L1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 or B1B40:1F, GO to L3.
• For information on all other PAM diagnostic trouble codes (DTC), REFER to 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 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 L6
No REPAIR the circuit.
L6 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect the PAM C3267B (vehicles without 360 degree view camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • 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.
No GO to L7
L7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT
  • Ignition OFF.
  • 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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1428-1 C3267B-2
    C1428-2 C3267B-10
    C1428-3 C3267B-12

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1428-1 C3676B-19
    C1428-2 C3676B-21
    C1428-3 C3676B-6

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 C3267B (vehicles without 360 degree view camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B40:08, B1B40:31 or B1B40:1F present?
Yes For vehicles without 360 degree view camera, GO to L10.
For vehicles with 360 degree view camera: 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
L11 CHECK IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST M: B1B42:08, B1B42:31 AND B1B42:1F

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

Normal Operation and Fault Symptoms

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

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB B1B42:08 Left Front Inner Sensor: Bus Signal/Message Failures Continuous, on-demand DTC that is set in the IPMB when there is a LIN message failure for the LHF inner parking aid sensor.
PAM B1B42:08 Left Front Inner Sensor: Bus Signal/Message Failures Continuous, on-demand DTC that is set in the PAM when a LIN message error occurs for the LHF inner parking aid sensor.
PAM B1B42:31 Left Front Inner Sensor: No Signal Continuous, on-demand DTC that is set in the PAM when there is no LIN signal from the LHF inner parking aid sensor.
PAM B1B42:1F Left Front Inner Sensor: Circuit Open Continuous, on-demand DTC that is set in the PAM when an intermittent LIN fault is detected for the LHF inner parking aid sensor.

Possible Sources

  • Wiring, Terminals or Connectors
  • LHF Inner Park Aid Sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
M1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 or B1B42:1F, GO to M3.
• For information on all other PAM diagnostic trouble codes (DTC), REFER to 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 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 M6
No REPAIR the circuit.
M6 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect the PAM C3267B (vehicles without 360 degree view camera).
  • Disconnect the IPMB C3676B (vehicles with 360-degree camera).
  • 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.
No GO to M7
M7 CHECK THE SENSOR FOR A SHORT TO VREF OR SIGNAL RETURN CIRCUIT
  • Ignition OFF.
  • 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:

    For vehicles without 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1429-1 C3267B-2
    C1429-2 C3267B-4
    C1429-3 C3267B-12

    For vehicles with 360-degree camera


    Positive lead Measurement/Action Negative lead
    C1429-1 C3676B-17
    C1429-2 C3676B-22
    C1429-3 C3676B-18

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 C3267B (vehicles without 360 degree view camera).
  • Connect IPMB C3676B (vehicles with 360 degree camera).
  • 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 or IPMB (for vehicles with 360 degree camera) diagnostic trouble codes (DTCs) and repeat the self-test.

Is DTC B1B42:08, B1B42:31 or B1B42:1F present?
Yes For vehicles without 360 degree view camera, GO to M10.
For vehicles with 360 degree view camera, 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
M11 CHECK IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC 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: Park Aid System Operation and Component Description (413-13A Park Aid - Vehicles With: Rear Park Aid, Description and Operation).

DTC Fault Trigger Conditions

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

Possible Sources

  • Rear Park Aid Sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
N1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360 DEGREE VIEW CAMERA) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 information on all other diagnostic trouble codes (DTC), REFER to the DTC Chart in this section.
No 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 a diagnostic scan tool, monitor the PAM parking aid sensor distance parameter identifiers (PID) (LRI_DIST, LRO_DIST, RRI_DIST, RRO_DIST). The PID displays 2540 mm (100 inches) when the sensor is functioning correctly.

Does the PID show 2540 mm (100 inches)?
Yes GO to N3
No GO to N4
N3 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH A TEST OBJECT BEHIND THE VEHICLE
  • Using a diagnostic scan tool, monitor the Parking Aid Module (PAM) distance Parameter Identifications (PIDs) (LRI_DIST, LRO_DIST, RRI_DIST, RRO_DIST).
  • 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 For vehicles without 360-degree camera view, GO to N5
For vehicles with 360-degree camera view, GO to N6
No 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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is the concern still present?
Yes For vehicles without 360-degree camera view, GO to N5
For vehicles with 360-degree camera view, GO to N6
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
N6 CHECK IMAGE PROCESSING MODULE B (IPMB) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by 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: Park Aid System Operation and Component Description (413-13A Park Aid - Vehicles With: Rear Park Aid, Description and Operation).

DTC Fault Trigger Conditions

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

Possible Sources

  • Front Parking Aid sensor
  • PAM (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
O1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360-DEGREE CAMERA VIEW) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • 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 information on all other diagnostic trouble codes (DTC), REFER to the DTC Chart in this section.
No 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 a diagnostic scan tool, monitor the PAM distance Parameter Identifications (PIDs) (LFI_DIST, LFO_DIST, RFI_DIST, RFO_DIST). The PID reads 2540 mm (100 in) with a correctly functioning sensor.

Does the PID show 2540 mm (100 inches)?
Yes GO to O3
No GO to O4
O3 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH A TEST OBJECT IN FRONT OF THE VEHICLE
  • Using a diagnostic scan tool, monitor the PAM distance Parameter Identifications (PIDs) (LFI_DIST, LFO_DIST, RFI_DIST, RFO_DIST).
  • 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 For vehicles without 360-degree camera view, GO to O5
For vehicles with 360-degree camera view, GO to O6
No 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 For vehicles without 360-degree camera view, GO to O5
For vehicles with 360-degree camera view, GO to O6
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
O6 CHECK IMAGE PROCESSING MODULE B (IPMB) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by 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
IPMB 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.
IPMB 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.
IPMB 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.
IPMB 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.
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 B1B38:98 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 B1B40:98 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 B1B42:98 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 (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
P1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360-DEGREE CAMERA VIEW) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • Check the park aid system DTCs during the self-test.

Are there parking aid system Diagnostic Trouble Codes (DTCs) other than B1B36:98, B1B38:98, B1B40:98 or B1B42:98?
Yes For information on all other diagnostic trouble codes (DTC), REFER to the DTC Chart in this section.
No GO to P2
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.
No GO to P3
P3 CHECK 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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is the concern still present?
Yes For vehicles without 360-degree camera view: GO to P4.
For vehicles with 360-degree camera view: GO to P5.
No The concern was a malfunctioning Parking Aid sensor. The system now operates correctly.
P4 CHECK 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 in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
P5 CHECK IPMB (IMAGE PROCESSING MODULE B) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST Q: B1B44:97, B1B44:98, B1B46:97, B1B46:98, B1B48:97, B1B48:98, B1B50:97 OR B1B50:98

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
IPMB 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.
IPMB 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.
IPMB 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.
IPMB 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.
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 (vehicles without 360-degree camera)
  • IPMB (vehicles with 360-degree camera)
Q1 CHECK DIAGNOSTIC TROUBLE CODES (DTCS) FROM PAM (PARKING AID MODULE) OR IPMB (IMAGE PROCESSING MODULE B) (FOR VEHICLES WITH 360-DEGREE CAMERA VIEW) SELF-TEST
  • The ignition is on.
  • Using the diagnostic scan tool, perform a self-test of the PAM or IPMB (for vehicles with 360-degree camera).
  • Check the park aid system DTCs during the self-test.

Are any parking aid diagnostic trouble codes (DTCs) recorded?
Yes For Diagnostic Trouble Codes (DTCs) B1B44:98, B1B46:98, B1B48:98 or B1B50:98; GO to Q2
For Diagnostic Trouble Codes (DTCs) B1B44:97, B1B46:97, B1B48:97 or B1B50:97; GO to Q3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC chart in this section.
No The system is currently operating correctly.
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.
No 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.
No 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 Diagnostic Trouble Codes (DTCs) and repeat the self-test of the PAM or IPMB (for vehicles with 360-degree camera).

Is the concern still present?
Yes For vehicles without 360-degree camera view, GO to Q5
For vehicles with 360-degree camera view: GO to Q6
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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
Q6 CHECK IMAGE PROCESSING MODULE B (IPMB) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMB 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 IPMB connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies, INSTALL a new IPMB.
REFER TO: Image Processing Module B (IPMB) (413-13B Parking Aid System - Vehicles With Parking Aid Camera, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST R: REVERSE BRAKING DEVICE INOPERATIVE OR MALFUNCTIONING

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 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
  • Locked out due to an ABS or traction control event

Visual Inspection and Pre-checks

  • Make sure that Traction Control and Cross Traffic Alert systems are enabled in the vehicle menu.
  • Make sure that all doors and the liftgate are closed.
  • Make sure that the reverse active guidelines operate correctly.
  • Make sure that there is no excessive dirt or debris on the rear camera lens.
  • Make sure that there is no dirt, decals or other obstructions at the SODL and SODR module locations.
R1 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 R2
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
R2 CHECK 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 to diagnose the DTC.
No GO to R3
R3 CHECK PARKING AID SYSTEM 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 is a concern with the parking aid system, REFER to the DTC or symptom chart in this section.
For an ABS system concern,
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).
DIAGNOSTIC PINPOINT TEST S: 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 Sets in continuous memory in the PAM if data messages received from the PCM through the GWM are absent for 5 seconds or longer.
PAM U0293:00 Lost Communication with Hybrid/Electric Transmission Control Module: No Sub Type Information Sets in continuous memory in the PAM if data messages received from the PCM through the GWM are absent 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/Electric Transmission Control Module: 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
S1 CHECK CUSTOMER CONCERN
  • The ignition is on.
  • Make sure the observed symptom is present.

Is the observed symptom present?
Yes GO to S2
No Clear the DTC. The system is currently operating normally. The DTC may have been set due to high network traffic or an intermittent condition.
S2 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 S3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
S3 CHECK PAM (PARKING AID 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.
No GO to S4
S4 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 S5
S5 PERFORM 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 DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). Refer to the appropriate Group 303 section for the procedure.
No GO to S6
S6 RECHECK PAM (PARKING AID 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 S7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
S7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK 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 S8
No The system is currently operating correctly. The concern may have been caused by incorrect component replacement procedures or incorrect module configuration.
S8 CHECK 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 CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists for this concern,
Click here to access the guided routine (PCM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST T: U0121:00 OR U0415:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PAM U0121:00 Communication Lost with Anti-Lock Brake System (ABS) Control Module "A": no subtype 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 Incorrect 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
T1 VERIFY THE CUSTOMER CONCERN
  • 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 condition.
T2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the ABS module pass the network test?
Yes GO to T3
No
REFER TO: Communication Network (418-00 Communication Network, Diagnosis and Testing).
T3 PERFORM PAM (PARKING AID MODULE) CONTROL 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.
No GO to T4
T4 PERFORM 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).
No GO to T5
T5 RECHECK PAM (PARK AID 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 T6
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
T6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for any recent service actions involving the ABS or PAM module. 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 T7
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
T7 VERIFY 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 condition, STOP this test and FOLLOW the service article instructions. If no service article exists for this condition, INSTALL a new ABS module.
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.
DIAGNOSTIC PINPOINT TEST U: 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 the 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
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 condition.
U2 CHECK COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the PSCM 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.
No GO to U4
U4 PERFORM 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).
No 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 U0131:00 or U0420:00 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 condition.
U6 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 U7
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
U7 VERIFY 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 CHECK OASIS for any applicable service bulletins: TSB, GSB, SSM or FSA. If a service document exists for this concern, STOP this test and FOLLOW the service document instructions. If no service documents address this concern,
Click here to access the guided routine (EPAS). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin concerns.
DIAGNOSTIC PINPOINT TEST V: U0138:00

Normal Operation and Fault Symptoms

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
PAM U0138:00 All Terrain Control Module Communication Lost: No Subtype Information Set in PAM continuous memory if data messages received from ATCM are not present for 5 seconds or more.

Possible Sources

  • Communication Problem
  • DSCM
  • 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 condition.
V2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the ATCM 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 CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.
No GO to V4
V4 PERFORM ATCM (ALL TERRAIN CONTROL MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform the ATCM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes
No 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 U0138:00 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 condition.
V6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERNS
  • CHECK the vehicle service history for any recent service actions involving the ATCM, GWM or PAM module. 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 VERIFY ATCM (ALL TERRAIN CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect the ATCM connector.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the ATCM connector. Make sure that it is properly installed and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service information: TSB, GSB, SSM or FSA. If a service document exists for this condition, STOP this test and FOLLOW the service document instructions. If no service information exists, INSTALL a new ATCM.
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.
DIAGNOSTIC 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 Set in PAM continuous memory if data messages received from BCM through GWM are not present for 5 seconds or more.
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 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.
No 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).
No 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).
No 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 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 condition.
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 OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists for this concern,
Click here to access the guided procedure (BCM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC 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 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.
No 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).
No 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 condition.
X6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for any recent service actions involving the GWM or PAM module. 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 technical service bulletins (TSB). If a TSB exists for this concern, STOP this test and FOLLOW the TSB instructions. If no TSB addresses 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.
DIAGNOSTIC PINPOINT TEST Y: U0155:00, U0423:00 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 Set in PAM continuous memory if data messages received from IPC through GWM are not present for 5 seconds or more.
PAM U0423:00 Invalid Data Received from Instrument Panel Cluster Control Module: No Sub Type Information Sets in PAM when PAM does not receive updated park assist data from the IPC 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 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.
No 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).
No 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 (413-01 Instrument Cluster, Message Center and Warning Chimes, Diagnosis and Testing).
No 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).

Are DTC U0155:00, U0423:00 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 condition.
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 article exists for this concern,
Click here to access the guided procedure (IPC). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
PINPOINT TEST 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 Set in PAM continuous memory if data messages received from the HVAC module through GWM are not present for 5 seconds or more.
PAM U0424:00 Incorrect Data Received from HVAC Control Module: No Sub Type Information Set in PAM when PAM receives invalid network outside air temperature data from the HVAC module through GWM for 5 seconds or more.
PAM U0424:82 Incorrect data received from HVAC control module: active/incorrect sequence counter/not updated Set in PAM when PAM does not receive updated outside air temperature data from the HVAC module for 5 seconds or more.

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 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.
No 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).
No 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 (412-00 Climate Control System - General Information, Diagnosis and Testing).
.
No 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 condition.
Z7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK PROBLEMS
  • CHECK the vehicle service history for any 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 bulletins: TSB, GSB, SSM or FSA. If a service bulletin exists for this condition, STOP this test and FOLLOW the service bulletin instructions. If no service bulletins exist, INSTALL a new HVAC module.
REFER TO: Heating, Ventilation and Air Conditioning (HVAC) Module (412-00 Climate Control System - General Information, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST AA: U0184:00 OR 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 in PAM continuous memory if data messages received from ACM through GWM are not present for 5 seconds or more.
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
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 condition.
AA2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the ACM 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 non-network diagnostic trouble codes (DTCs)?
Yes CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.
No GO to AA4
AA4 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 AA5
AA5 PERFORM 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 For vehicles with SYNC 3
REFER TO: Information and Entertainment System - Vehicles With: SYNC 3 (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Diagnosis and Testing).
For vehicles without SYNC 3 REFER TO: Information and Entertainment System - Vehicles Without: SYNC 3 (415-00A Information and Entertainment System - General Information - Vehicles Without SYNC 3, Diagnosis and Testing).
No GO to AA6
AA6 RECHECK PAM (PARK AID 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 U0184:00 or U0485:82 present?
Yes GO to AA7.
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
AA7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for any recent service actions involving the ACM, GWM or PAM module. 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 AA8.
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
AA8 VERIFY 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 in OASIS for any applicable service information: TSB, GSB, SSM or FSA. If service information exists for this concern, STOP this test and FOLLOW the service information instructions. If no service information applies, INSTALL a new ACM.
REFER TO: Front Audio Control Module (ACM) (415-00A Infotainment System - General Information - Vehicles Without: SYNC 3, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST AB: 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 in PAM continuous memory if data messages received from SCCM through GWM are not present for 5 seconds or more.

Possible Sources

  • Communication Problem
  • SCCM
  • 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 condition.
AB2 CHECK THE COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the SCCM 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 REFER to the PAM DTC Chart in this section.
No GO to AB4
AB4 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).
No GO to AB5
AB5 RECHECK PAM (PARK AID 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 AB6
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
AB6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • CHECK the vehicle service history for any recent service actions involving the SCCM or PAM module. 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 AB7
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
AB7 VERIFY 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 information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new SCCM.
REFER TO: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST AC: 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 in PAM continuous memory if data messages received from TRM through GWM are not present for 5 seconds or more.
PAM U0553:82 Invalid data received from the Rear "B" Lighting Control Module: active/sequence counter invalid/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
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 condition.
AC2 CHECK THE NETWORK COMMUNICATION
  • Using a scan tool, perform the network test.

Does the TRM 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 CHECK all non-network Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.
No GO to AC4
AC4 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 AC5
AC5 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).
No GO to AC6
AC6 RECHECK PAM (PARK AID 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 AC7
No The system is currently operating correctly. The DTC may have been set due to high network traffic or an intermittent condition.
AC7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERNS
  • 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 AC8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
AC8 VERIFY 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 information: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists, INSTALL a new TRM.
REFER TO: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST AD: U0253:87, 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 in PAM continuous memory if data messages received from APIM through GWM are not present for 5 seconds or more.
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 through GWM for 5 seconds or more.
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
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 condition.
AD2 CHECK COMMUNICATION NETWORK
  • Using a scan tool, perform the network test.

Does the APIM 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 REFER to the PAM DTC Chart in this section.
No 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).
No GO to AD5
AD5 PERFORM APIM (SYNC MODULE) SELF-TEST
  • Using the diagnostic scan tool, perform the APIM self-test.

Are there any non-network diagnostic trouble codes (DTCs)?
Yes For vehicles with SYNC 3
REFER TO: Information and Entertainment System - Vehicles With: SYNC 3 (415-00B Information and Entertainment System - General Information - Vehicles With: SYNC 3, Diagnosis and Testing).
For vehicles without SYNC 3 REFER TO: Information and Entertainment System - Vehicles Without: SYNC 3 (415-00A Information and Entertainment System - General Information - Vehicles Without SYNC 3, Diagnosis and Testing).
No 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 U0253:87, U0554:00 OR U0554:82 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 condition.
AD7 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 AD8
No The system is currently operating correctly. The concern may have been caused by incorrect part replacement procedures or incorrect module configuration.
AD8 VERIFY 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 CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article exists for this concern,
Click here to access the guided procedure (APIM). Internet Explorer version 11 or later is required to perform this Pinpoint test.
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.
DIAGNOSTIC PINPOINT TEST AE: 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
AE1 CHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) 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.

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 AE2
AE2 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 CHECK in OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, STOP this test and FOLLOW the service article instructions. If no service article applies to this concern, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Assist System - Vehicles With: Rear Park Assist, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
DIAGNOSTIC PINPOINT TEST AF: 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

  • PAM
AF1 CHECK VEHICLE HISTORY FOR RECENT SERVICE ACTIONS
  • Check the vehicle history for any recent service actions related to the PAM.

Have any service actions been performed?
Yes REPEAT the PMI as directed by the diagnostic scan tool.
No GO to AF2.
AF2 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 IPMB cannot save the configuration data, INSTALL a new PAM.
REFER TO: Park Assist Module (PAM) (413-13A Park Aid System - Vehicles With: Rear Park Aid System, Removal and Installation).
DIAGNOSTIC PINPOINT TEST AG: 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

  • PAM
AG1 CHECK PAM (PARK ASSIST MODULE) DIAGNOSTIC TROUBLE CODES (DTCS) 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.

Test yourself

A quick Ford Explorer quiz: every answer comes with an explanation and a link to the manual page.