Ford Escape 2020-2024 Service Manual / Electrical / Instrumentation and Warning Systems / Parking Aid - Vehicles With: Rear Parking Aid / Diagnosis and Testing - Parking Aid

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

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Diagnostic Trouble Code Chart

Module	DTC	Description	Action
PAM	B1303:13	Park Assist Switch: Circuit Open	GO to Pinpoint Test E
PAM	B1303:9E	Park Assist 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 Intermittent	GO to Pinpoint Test J
PAM	B1B36:31	Right Front Outer Sensor: No Signal	GO to Pinpoint Test J
PAM	B1B36:64	Right Front Outer Sensor: Signal Plausibility Failure	GO to Pinpoint Test J
PAM	B1B36:96	Right Front Outer Sensor: Component Internal Failure	GO to Pinpoint Test O
PAM	B1B36:97	Right Front Outer Sensor: Component Or System Operation Obstructed Or Blocked	GO to Pinpoint Test P
PAM	B1B36:98	Right Front Outer Sensor: Component Or System Over Temperature	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 Intermittent	GO to Pinpoint Test K
PAM	B1B38:31	Right Front Inner Sensor: No Signal	GO to Pinpoint Test K
PAM	B1B38:64	Right Front Inner Sensor: Signal Plausibility Failure	GO to Pinpoint Test K
PAM	B1B38:96	Right Front Inner Sensor: Component Internal Failure	GO to Pinpoint Test O
PAM	B1B38:97	Right Front Inner Sensor: Component Or System Operation Obstructed Or Blocked	GO to Pinpoint Test P
PAM	B1B38:98	Right Front Inner Sensor: Component Or System Over Temperature	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 Intermittent	GO to Pinpoint Test L
PAM	B1B40:31	Left Front Outer Sensor: No Signal	GO to Pinpoint Test L
PAM	B1B40:64	Left Front Outer Sensor: Signal Plausibility Failure	GO to Pinpoint Test L
PAM	B1B40:96	Left Front Outer Sensor: Component Internal Failure	GO to Pinpoint Test O
PAM	B1B40:97	Left Front Outer Sensor: Component Or System Operation Obstructed Or Blocked	GO to Pinpoint Test P
PAM	B1B40:98	Left Front Outer Sensor: Component Or System Over Temperature	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 Intermittent	GO to Pinpoint Test M
PAM	B1B42:31	Left Front Inner Sensor: No Signal	GO to Pinpoint Test M
PAM	B1B42:64	Left Front Inner Sensor: Signal Plausibility Failure	GO to Pinpoint Test M
PAM	B1B42:96	Left Front Inner Sensor: Component Internal Failure	GO to Pinpoint Test O
PAM	B1B42:97	Left Front Inner Sensor: Component Or System Operation Obstructed Or Blocked	GO to Pinpoint Test P
PAM	B1B42:98	Left Front Inner Sensor: Component Or System Over Temperature	GO to Pinpoint Test P
PAM	B1B44:08	Right Rear Outer Sensor: Bus Signal/Message Failure	GO to Pinpoint Test F
PAM	B1B44:1F	Right Rear Outer Sensor: Circuit Intermittent	GO to Pinpoint Test F
PAM	B1B44:31	Right Rear Outer Sensor: No Signal	GO to Pinpoint Test F
PAM	B1B44:64	Right Rear Outer Sensor: Signal Plausibility Failure	GO to Pinpoint Test F
PAM	B1B44:96	Right Rear Outer Sensor: Component Internal Failure	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 Over Temperature	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 Intermittent	GO to Pinpoint Test G
PAM	B1B46:31	Right Rear Inner Sensor: No Signal	GO to Pinpoint Test G
PAM	B1B46:64	Right Rear Inner Sensor: Signal Plausibility Failure	GO to Pinpoint Test G
PAM	B1B46:96	Right Rear Inner Sensor: Component Internal Failure	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 Over Temperature	GO to Pinpoint Test Q
PAM	B1B48:08	Left Rear Outer Sensor: Bus Signal/Message Failure	GO to Pinpoint Test H
PAM	B1B48:1F	Left Rear Outer Sensor: Circuit Intermittent	GO to Pinpoint Test H
PAM	B1B48:31	Left Rear Outer Sensor: No Signal	GO to Pinpoint Test H
PAM	B1B48:64	Left Rear Outer Sensor: Signal Plausibility Failure	GO to Pinpoint Test H
PAM	B1B48:96	Left Rear Outer Sensor: Component Internal Failure	GO to Pinpoint Test N
PAM	B1B48:97	Left Rear Outer Sensor: Component Or System Operation Obstructed Or Blocked	GO to Pinpoint Test Q
PAM	B1B48:98	Left Rear Outer Sensor: Component Or System Over Temperature	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 Intermittent	GO to Pinpoint Test I
PAM	B1B50:31	Left Rear Inner Sensor: No Signal	GO to Pinpoint Test I
PAM	B1B50:64	Left Rear Inner Sensor: Signal Plausibility Failure	GO to Pinpoint Test I
PAM	B1B50:96	Left Rear Inner Sensor: Component Internal Failure	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 Over Temperature	GO to Pinpoint Test Q
PAM	B1B54:11	Function LED - Park Aid: Circuit Short To Ground	GO to Pinpoint Test D
PAM	B1B54:15	Function LED - Park Aid: Circuit Short To Battery Or Open	GO to Pinpoint Test D
PAM	B1B57:11	Front Sensors Power Circuit: Circuit Short To Ground	GO to Pinpoint Test B
PAM	B1B58:11	Rear Sensors Power Circuit: Circuit Short To Ground	GO to Pinpoint Test C
PAM	U0100:00	Lost Communication With ECM/PCM "A": No Sub Type Information	GO to Pinpoint Test T
PAM	U0121:00	Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information	GO to Pinpoint Test U
PAM	U0131:00	Lost Communication With Power Steering Control Module: No Sub-Type Information	GO to Pinpoint Test V
PAM	U0140:00	Lost Communication With Body Control Module: No Sub Type Information	GO to Pinpoint Test W
PAM	U0146:00	Lost Communication With Gateway "A": No Sub Type Information	GO to Pinpoint Test X
PAM	U0155:00	Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information	GO to Pinpoint Test Y
PAM	U0164:00	Lost Communication With HVAC Control Module: No Sub Type Information	GO to Pinpoint Test Z
PAM	U0184:00	Lost Communication With Radio: No Sub Type Information	GO to Pinpoint Test AB
PAM	U0212:00	Lost Communication With Steering Column Control Module: No Sub Type Information	GO to Pinpoint Test AC
PAM	U0252:00	Lost Communication With Lighting Control Module- Rear "B": No Sub Type Information	GO to Pinpoint Test AD
PAM	U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test AE
PAM	U0293:00	Lost Communication with Hybrid/EV Powertrain Control Module: No Sub Type Information	GO to Pinpoint Test T
PAM	U0300:57	Internal Control Module Software Incompatibility: Invalid/Incompatible Software Component	GO to Pinpoint Test AH
PAM	U0401:00	Invalid Data Received from ECM/PCM A: No Sub Type Information	GO to Pinpoint Test T
PAM	U0415:00	Invalid Data Received from Anti-Lock Brake System (ABS) Control Module "A": No Sub Type Information	GO to Pinpoint Test U
PAM	U0420:00	Invalid Data Received from Power Steering Control Module "A": No Sub Type Information	GO to Pinpoint Test V
PAM	U0422:00	Invalid Data Received From Body Control Module: No Sub Type Information	GO to Pinpoint Test W
PAM	U0423:82	Invalid Data Received from Instrument Panel Cluster Control Module: Alive/Sequence Counter Incorrect/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	Invalid Data Received From HVAC Control Module: Alive/Sequence Counter Incorrect/Not Updated	GO to Pinpoint Test Z
PAM	U0428:00	Invalid Data Received From Steering Angle Sensor Module: No Sub Type Information	GO to Pinpoint Test AA
PAM	U0485:82	Invalid Data Received From Radio: Alive/Sequence Counter Incorrect/Not Updated	GO to Pinpoint Test AB
PAM	U0553:82	Invalid Data Received From Lighting Control Module-Rear "B": Alive/Sequence Counter Incorrect/Not Updated	GO to Pinpoint Test AD
PAM	U0554:00	Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information	GO to Pinpoint Test AE
PAM	U0554:82	Invalid Data Received From Accessory Protocol Interface Module: Alive/Sequence Counter Incorrect/Not Updated	GO to Pinpoint Test AE
PAM	U0594:00	Invalid Data Received From Hybrid/EV Powertrain Control Module: No Sub Type Information	GO to Pinpoint Test T
PAM	U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	GO to Pinpoint Test AF
PAM	U2024:41	Control Module Cal-Config Data: General Checksum Failure	GO to Pinpoint Test AG
PAM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AG
PAM	U2101:00	Control Module Configuration Incompatible: No Sub Type Information	GO to Pinpoint Test AG
PAM	U3000:44	Control Module: Data Memory Failure	GO to Pinpoint Test AH
PAM	U3000:45	Control Module: Program Memory Failure	GO to Pinpoint Test AH
PAM	U3000:46	Control Module: Calibration/Parameter Memory Failure	GO to Pinpoint Test AH
PAM	U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test AH

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom	Action
Driver Aid & Information > Park Assist > Controls > Inoperative	GO to Pinpoint Test S
Driver Aid & Information > Park Assist > Performance > Inoperative	GO to Pinpoint Test S
Driver Aid & Information > Forward Sensing > Controls > Inoperative	GO to Pinpoint Test A
Driver Aid & Information > Forward Sensing > Controls > Inoperative	GO to Pinpoint Test D
Driver Aid & Information > Forward Sensing > Controls > Inoperative	GO to Pinpoint Test E
Driver Aid & Information > Forward Sensing > Performance > Inaccurate	GO to Pinpoint Test R
Driver Aid & Information > Forward Sensing > Performance > Inoperative	GO to Pinpoint Test A
Driver Aid & Information > Forward Sensing > Performance > Inoperative	GO to Pinpoint Test D
Driver Aid & Information > Forward Sensing > Performance > Inoperative	GO to Pinpoint Test E
Driver Aid & Information > Forward Sensing > Performance > Inoperative	GO to Pinpoint Test R
Driver Aid & Information > Reverse Sensing > Controls > Inoperative	GO to Pinpoint Test A
Driver Aid & Information > Reverse Sensing > Controls > Inoperative	GO to Pinpoint Test D
Driver Aid & Information > Reverse Sensing > Controls > Inoperative	GO to Pinpoint Test E
Driver Aid & Information > Reverse Sensing > Controls > Inoperative	GO to Pinpoint Test S
Driver Aid & Information > Reverse Sensing > Performance > Inaccurate	GO to Pinpoint Test R
Driver Aid & Information > Reverse Sensing > Performance > Inoperative	GO to Pinpoint Test A
Driver Aid & Information > Reverse Sensing > Performance > Inoperative	GO to Pinpoint Test D
Driver Aid & Information > Reverse Sensing > Performance > Inoperative	GO to Pinpoint Test E
Driver Aid & Information > Reverse Sensing > Performance > Inoperative	GO to Pinpoint Test R
Driver Aid & Information > Reverse Sensing > Performance > Inoperative	GO to Pinpoint Test S
Safe & Secure > Trailer Tow > Brake Control > Inoperative	GO to Pinpoint Test S

Symptom Chart(s)

Symptom Chart: Parking Aid

Condition	Possible Sources	Actions
A module does not communicate with the diagnostic scan tool	Fuse Wiring, terminals or connectors PAM	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The audible parking aid is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test A
Continuous or intermittent tone when no obstacles or fault codes are present	Refer to the Pinpoint Test	GO to Pinpoint Test R
The parking aid audio tones are inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test A
The parking aid menu is not available in the message center and cannot be deactivated	A MyKey® restricted key is in use	Normal operation.
The parking aid switch is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test E
The reverse brake assist is inoperative or does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test S
The Parking Aid Disable Switch LED Is Inoperative Or Always On	Refer to the Pinpoint Test	GO to Pinpoint Test D
The "Front Park Aid Not Available Sensor Blocked" message	Refer to the Pinpoint Test	GO to Pinpoint Test P
The "Rear Park Aid Not Available Sensor Blocked" message	Refer to the Pinpoint Test	GO to Pinpoint Test Q

Pinpoint Test(s)

PINPOINT TEST A: THE AUDIBLE PARKING AID IS INOPERATIVE

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

NOTE: If a MyKey® restricted key is in use, the parking aid menu is not available in the message center and the parking aid cannot be deactivated.

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

Normal Operation and Fault Conditions

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

Possible Sources

Parking aid system disabled
Communication concern
PAM
IPC concern
TR input concern

A1 PERFORM A NETWORK TEST

Ignition ON.

Using a diagnostic scan tool, perform a network test.

Do all modules pass the network test?

Yes

GO to A2

No	DIAGNOSE any communication concerns. REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

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

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

Are any parking aid Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to the appropiate DTC Chart in this section.

GO to A3

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

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

Are any IPC Diagnostic Trouble Codes (DTCs) recorded?

Yes

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

GO to A4

A4 VERIFY THE PARKING AID IS ENABLED

Verify the rear parking aid and front parking aid (if equipped) is 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 INPUT

Apply the parking brake.

Ignition ON.

While monitoring the IPC PRNDL display, briefly select each gear in the entire gear range.

Does the IPC PRNDL indicator match the gear selection throughout the entire range?

Yes

GO to A6

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

A6 CHECK THE AUDIO CHIMES

Ignition OFF.

Open the driver door.

Place the headlamp switch in the ON position.

Does the warning chime operate through the audio system?

Yes

GO to A7

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

A7 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

PINPOINT TEST B: B1B57:11

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

The PAM supplies voltage to the front parking aid sensors via a common circuit.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B57:11	Front Sensors Power Circuit: Circuit Short To Ground	A continuous memory and on-demand DTC that sets when the front sensor voltage supply circuit is shorted to ground or the signal return circuit.

Possible Sources

Wiring, terminals or connectors
Front parking aid sensor
Front active park assist sensor (if equipped)
PAM

B1 CHECK THE FRONT BUMPER WIRING HARNESS

Ignition OFF.

Inspect the front bumper wiring harness for opens, shorts, grounds, or corrosion.

Is the front bumper wiring harness OK?

Yes

GO to B2

No	REPAIR or INSTALL a new bumper wiring harness.

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

Disconnect: LHF Front Outer Parking Aid Sensor C1428.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B3

No	INSTALL a new LHF 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 LHF (LEFT-HAND FRONT) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: LHF Inner Parking Aid Sensor C1429.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

If the vehicle is equipped with active park assist, GO to B4
If the vehicle is NOT equipped with active park assist, GO to B6

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

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

Ignition OFF.

Disconnect: LHF active park assist sensor C1854.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B5

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

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

Ignition OFF.

Disconnect: RHF active park assist sensor C1855.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B6

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

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

Ignition OFF.

Disconnect: RHF inner parking aid sensor C1430.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B7

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

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

Ignition OFF.

Disconnect: RHF Outer Parking Aid Sensor C1431.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B57:11 present?

Yes

GO to B8

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

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

Ignition OFF.

Disconnect PAM C4226B .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226B-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to B9

No	REPAIR the circuit.

B9 CHECK THE FRONT PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT AND GROUND CIRCUIT FOR A SHORT TOGETHER

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226B-2 C4226B-12

Is the resistance greater than 10,000 ohms?

Yes

GO to B10

No	REPAIR the circuit.

B10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PAM .
REFER to: Parking Aid - System Operation and Component Description (413-13C Parking Aid - Vehicles With: Active Park Assist, Description and Operation).

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

PINPOINT TEST C: B1B58:11

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

The PAM supplies voltage to the front parking aid sensors via a common circuit.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B58:11	Rear Sensors Power Circuit: Circuit Short To Ground	A continuous memory and on-demand DTC that sets when the rear sensor voltage supply circuit is shorted to ground or to the signal return circuit.

Possible Sources

Wiring, terminals or connectors
Rear parking aid sensor
PAM

C1 CHECK THE REAR BUMPER WIRING HARNESS

Ignition OFF.

Inspect the rear bumper wiring harness for opens, shorts, grounds, or corrosion.

Is the bumper wiring harness OK?

Yes

GO to C2

No	REPAIR or INSTALL a new bumper wiring harness.

C2 CHECK THE LHR (LEFT-HAND REAR) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT

Disconnect: LHR Outer Parking Aid Sensor C4544.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C3

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

C3 CHECK THE LHR (LEFT-HAND REAR) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: LHR Inner Parking Aid Sensor C4545.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C4

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

C4 CHECK THE RHR (RIGHT-HAND REAR) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: RHR Inner Parking Aid Sensor C4546.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C5

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

C5 CHECK THE RHR (RIGHT-HAND REAR) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: RHR Outer Parking Aid Sensor C4547.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

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

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

C6 CHECK THE RHR (RIGHT-HAND REAR) SIDE SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: RHR side active park assist sensor C4421.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C7

No	INSTALL a new RHR side sensor. REFER to: Rear Active Park Assist Sensors (413-13C Parking Aid - Vehicles With: Active Park Assist, Removal and Installation).

C7 CHECK THE LHR (LEFT-HAND REAR) SIDE SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: LHR Side Active Park Assist Sensor C4420.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes

GO to C8

No	INSTALL a new LHR side sensor. REFER to: Rear Active Park Assist Sensors (413-13C Parking Aid - Vehicles With: Active Park Assist, Removal and Installation).

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

Ignition OFF.

Disconnect PAM C4226A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-3 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to C9

No	REPAIR the circuit.

C9 CHECK THE PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT AND GROUND CIRCUIT FOR A SHORT TOGETHER

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-3 C4226A-10

Is the resistance greater than 10,000 ohms?

Yes

GO to C10

No	REPAIR the circuit.

C10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

No	The system is operating correctly at this time. 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: THE PARKING AID DISABLE SWITCH LED (LIGHT EMITTING DIODE) IS INOPERATIVE OR ALWAYS ON

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B54:11	Function LED - Park Aid: Circuit Short To Ground	A continuous and on-demand DTC that sets when the parking aid disable status LED circuit is shorted to ground.
PAM B1B54:15	Function LED - Park Aid: Circuit Short To Battery Or Open	A continuous and on-demand DTC that sets when the parking aid disable status LED circuit is open or shorted battery voltage.

Possible Sources

Wiring, terminals or connectors
PAM
Auto-start-stop-deactivation switch

D1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Is DTC B1B54:11 present?

Yes

GO to D4

No	If the LED is inoperative, GO to D3 If the LED is always on, GO to D2

D2 CHECK THE LED (LIGHT EMITTING DIODE) CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect PAM C4226A .

Ignition ON.

Does the LED continue to illuminate?

Yes

REPAIR the circuit.

GO to D7

D3 CHECK THE LED (LIGHT EMITTING DIODE) CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PAM C4226A .

Disconnect auto-start-stop-deactivation switch C3010 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-7 C4226A-4

Is the resistance less than 3 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D4 CHECK THE LED (LIGHT EMITTING DIODE) CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect PAM C4226A .

Disconnect auto-start-stop-deactivation switch C3010 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-7 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to D5

No	REPAIR the circuit.

D5 CHECK THE LED (LIGHT EMITTING DIODE) WITH THE PAM (PARKING ASSIST CONTROL MODULE) BYPASSED

Connect auto-start-stop-deactivation switch C3010 .

Connect a fused jumper wire:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-4 Battery positive

Does the LED illuminate?

Yes

REMOVE the fused jumper wire. GO to D7

GO to D6

D6 CHECK THE AUTO-START-STOP-DEACTIVATION SWITCH GROUND

Disconnect auto-start-stop-deactivation switch C3010 .

Measure
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-12 Ground

Is the resistance less than 3 ohms?

Yes

INSTALL a new auto-start-stop-deactivation switch.

No	REPAIR the circuit.

D7 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

No	The system is operating correctly at this time. 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: THE PARKING AID DISABLE SWITCH IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1303:13	Park Assist Switch: Circuit Open	A continuous DTC that sets in the PAM when the PAM detects a stuck open in the parking aid disable switch input circuit.
PAM B1303:9E	Park Assist Switch: Stuck On	A continuous DTC that sets in the PAM when the PAM detects a short to ground in the parking aid disable switch input circuit.

Possible Sources

Wiring, terminals or connectors
Parking aid disable switch
PAM

E1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify the operation of the parking aid system.

Does the parking aid system operate correctly?

Yes

CLEAR the DTC . The system is operating correctly at this time. The concern may have been caused by high network traffic or the driver's perception of how the parking aid system operate. REFER to the Owner's Manual.

GO to E2

E2 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Are any Diagnostic Trouble Codes (DTCs) present?

Yes

For DTC B1303:13, GO to E4
For DTC B1303:9E, GO to E3
For all other PAM Diagnostic Trouble Codes (DTCs). REFER to the PAM DTC Chart in this section.

GO to E5

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

Ignition OFF.

Disconnect PAM C4226A .

Disconnect auto-start-stop-deactivation switch C3010 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-3 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E4 CHECK THE PARKING AID SWITCH CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect PAM C4226A .

Disconnect auto-start-stop-deactivation switch C3010 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-3 C4226A-13

Is the resistance less than 3 ohms?

Yes

GO to E5

No	REPAIR the circuit.

E5 CHECK THE PARKING AID SWITCH GROUND CIRCUIT FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3010-12 Ground

Is the resistance less than 3 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E6 CHECK THE PARKING AID SWITCH OPERATION

Connect auto-start-stop-deactivation switch C3010 .

Measure while pressing and releasing the parking aid switch:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4226A-13 Ground

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

Yes

GO to E7

No	INSTALL a new auto-start-stop-deactivation switch.

E7 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B44:08	Right Rear Outer Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the RHR outer parking aid sensor.
PAM B1B44:31	Right Rear Outer Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the RHR outer parking aid sensor.
PAM B1B44:1F	Right Rear Outer Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the RHR outer parking aid sensor.
PAM B1B44:64	Right Rear Outer Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the RHR outer parking aid sensor.

Possible Sources

Wiring, terminals or connectors
RHR outer parking aid sensor
PAM

F1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple rear parking aid sensors recorded?

Yes

GO to F2

No	• For Diagnostic Trouble Codes (DTCs) B1B44:08, B1B44:31, B1B44:1F or B1B44:64 GO to F3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

F2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.

Is the rear bumper wiring harness OK?

Yes

GO to F3

No	REPAIR or INSTALL a new rear bumper wiring harness.

F3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect RHR outer parking aid sensor C4547 .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4547-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to F4

No	REPAIR the circuit.

F4 CHECK FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4547-1 C4547-3

Is the voltage greater than 9 volts?

Yes

GO to F5

No	REPAIR the circuit.

F5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226A .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4547-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to F6

F6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4547-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to F7

No	REPAIR the circuit.

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

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4547-2 C4547-1

C4547-2 C4547-3

Are the resistances greater than 10,000 ohms?

Yes

GO to F8

No	REPAIR the affected circuits.

F8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4547-1		C4226A-3
C4547-2		C4226A-5
C4547-3		C4226A-10

Are the resistances less than 3 ohms?

Yes

GO to F9

No	REPAIR the affected circuit.

F9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226A .

Install a known good sensor for the suspect RHR outer parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to F10

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

F10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B46:08	Right Rear Inner Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the RHR inner parking aid sensor.
PAM B1B46:31	Right Rear Inner Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the RHR inner parking aid sensor.
PAM B1B46:1F	Right Rear Inner Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the RHR inner parking aid sensor.
PAM B1B46:64	Right Rear Inner Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the RHR inner parking aid sensor.

Possible Sources

Wiring, terminals or connectors
RHR inner parking aid sensor
PAM

G1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple rear parking aid sensors recorded?

Yes

GO to G2

No	• For Diagnostic Trouble Codes (DTCs) B1B46:08, B1B46:31, B1B46:1F or B1B46:64 GO to G3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

G2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.

Is the rear bumper wiring harness OK?

Yes

GO to G3

No	REPAIR or INSTALL a new rear bumper wiring harness.

G3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect RHR inner parking aid sensor C4546 .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4546-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to G4

No	REPAIR the circuit.

G4 CHECK FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4546-1 C4546-3

Is the voltage greater than 9 volts?

Yes

GO to G5

No	REPAIR the circuit.

G5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226A .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4546-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to G6

G6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4546-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to G7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4546-2 C4546-1

C4546-2 C4546-3

Are the resistances greater than 10,000 ohms?

Yes

GO to G8

No	REPAIR the affected circuits.

G8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4546-1		C4226A-3
C4546-2		C4226A-15
C4546-3		C4226A-10

Are the resistances less than 3 ohms?

Yes

GO to G9

No	REPAIR the affected circuit.

G9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226A .

Install a known good sensor for the suspect RHR inner parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to G10

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

G10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B48:08	Left Rear Outer Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the LHR outer parking aid sensor.
PAM B1B48:31	Left Rear Outer Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the LHR outer parking aid sensor.
PAM B1B48:1F	Left Rear Outer Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the LHR outer parking aid sensor.
PAM B1B48:64	Left Rear Outer Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the LHR outer parking aid sensor.

Possible Sources

Wiring, terminals or connectors
LHR outer parking aid sensor
PAM

H1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple rear parking aid sensors recorded?

Yes

GO to H2

No	• For Diagnostic Trouble Codes (DTCs) B1B44:08, B1B44:31, B1B48:1F or B1B48:64 GO to H3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

H2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.

Is the rear bumper wiring harness OK?

Yes

GO to H3

No	REPAIR or INSTALL a new rear bumper wiring harness.

H3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect LHR outer parking aid sensor C4544 .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4544-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to H4

No	REPAIR the circuit.

H4 CHECK FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4544-1 C4544-3

Is the voltage greater than 9 volts?

Yes

GO to H5

No	REPAIR the circuit.

H5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226A .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4544-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to H6

H6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4544-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to H7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4544-2 C4544-1

C4544-2 C4544-3

Are the resistances greater than 10,000 ohms?

Yes

GO to H8

No	REPAIR the affected circuits.

H8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4544-1		C4226A-3
C4544-2		C4226A-16
C4544-3		C4226A-10

Are the resistances less than 3 ohms?

Yes

GO to H9

No	REPAIR the affected circuit.

H9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226A .

Install a known good sensor for the suspect LHR outer parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to H10

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

H10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B50:08	Left Rear Inner Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the LHR inner parking aid sensor.
PAM B1B50:31	Left Rear Inner Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the LHR inner parking aid sensor.
PAM B1B50:1F	Left Rear Inner Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the LHR inner parking aid sensor.
PAM B1B50:64	Left Rear Inner Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the LHR inner parking aid sensor.

Possible Sources

Wiring, terminals or connectors
LHR inner parking aid sensor
PAM

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

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple rear parking aid sensors recorded?

Yes

GO to I2

No	• For Diagnostic Trouble Codes (DTCs) B1B50:08, B1B50:31, B1B50:1F or B1B50:64 GO to I3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

I2 CHECK THE REAR BUMPER WIRING HARNESS

Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.

Is the rear bumper wiring harness OK?

Yes

GO to I3

No	REPAIR or INSTALL a new rear bumper wiring harness.

I3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect LHR inner parking aid sensor C4545 .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4545-1 Ground

Is the voltage greater than 9 volts?

Yes

GO to I4

No	REPAIR the circuit.

I4 CHECK FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4545-1 C4545-3

Is the voltage greater than 9 volts?

Yes

GO to I5

No	REPAIR the circuit.

I5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226A .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4545-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to I6

I6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4545-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to I7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4545-2 C4545-1

C4545-2 C4545-3

Are the resistances greater than 10,000 ohms?

Yes

GO to I8

No	REPAIR the affected circuits.

I8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4545-1		C4226A-3
C4545-2		C4226A-6
C4545-3		C4226A-10

Are the resistances less than 3 ohms?

Yes

GO to I9

No	REPAIR the affected circuit.

I9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226A .

Install a known good sensor for the suspect LHR inner parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to I10

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

I10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B36:08	Right Front Outer Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the RHF outer parking aid sensor.
PAM B1B36:31	Right Front Outer Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the RHF outer parking aid sensor.
PAM B1B36:1F	Right Front Outer Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the RHF outer parking aid sensor.
PAM B1B36:64	Right Front Outer Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the RHF outer parking aid sensor.

Possible Sources

Wiring, terminals or connectors
RHF outer parking aid sensor
PAM

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

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple front parking aid sensors recorded?

Yes

GO to J2

No	• For Diagnostic Trouble Codes (DTCs) B1B36:08, B1B36:31, B1B36:1F or B1B36:64 GO to J3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

J2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.

Is the front bumper wiring harness OK?

Yes

GO to J3

No	REPAIR or INSTALL a new front bumper wiring harness.

J3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect RHF outer parking aid sensor C1431 .

Ignition ON.

Measure:
Click to display 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 FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1431-1 C1431-3

Is the voltage greater than 9 volts?

Yes

GO to J5

No	REPAIR the circuit.

J5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226B .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1431-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to J6

J6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1431-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to J7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1431-2 C1431-1

C1431-2 C1431-3

Are the resistances greater than 10,000 ohms?

Yes

GO to J8

No	REPAIR the affected circuits.

J8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1431-1		C4226B-2
C1431-2		C4226B-3
C1431-3		C4226B-12

Are the resistances less than 3 ohms?

Yes

GO to J9

No	REPAIR the affected circuit.

J9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226B .

Install a known good sensor for the suspect RHF outer parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to J10

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

J10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B38:08	Right Front Inner Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the RHF inner parking aid sensor.
PAM B1B38:31	Right Front Inner Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the RHF inner parking aid sensor.
PAM B1B38:1F	Right Front Inner Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the RHF inner parking aid sensor.
PAM B1B38:64	Right Front Inner Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the LHF active park assist sensor.

Possible Sources

Wiring, terminals or connectors
RHF inner parking aid sensor
PAM

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

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple front parking aid sensors recorded?

Yes

GO to K2

No	• For Diagnostic Trouble Codes (DTCs) B1B38:08, B1B38:31, B1B38:1F or B1B38:64 GO to K3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

K2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.

Is the front bumper wiring harness OK?

Yes

GO to K3

No	REPAIR or INSTALL a new front bumper wiring harness.

K3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect RHF inner parking aid sensor C1430 .

Ignition ON.

Measure:
Click to display 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 FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1430-1 C1430-3

Is the voltage greater than 9 volts?

Yes

GO to K5

No	REPAIR the circuit.

K5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226B .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1430-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to K6

K6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1430-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to K7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1430-2 C1430-1

C1430-2 C1430-3

Are the resistances greater than 10,000 ohms?

Yes

GO to K8

No	REPAIR the affected circuits.

K8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1430-1		C4226B-2
C1430-2		C4226B-9
C1430-3		C4226B-12

Are the resistances less than 3 ohms?

Yes

GO to K9

No	REPAIR the affected circuit.

K9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226B .

Install a known good sensor for the suspect RHF inner parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to K10

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

K10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B40:08	Left Front Outer Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the LHF outer parking aid sensor.
PAM B1B40:31	Left Front Outer Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the LHF outer parking aid sensor.
PAM B1B40:1F	Left Front Outer Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the LHF outer parking aid sensor.
PAM B1B40:64	Left Front Outer Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the LHF outer parking aid sensor.

Possible Sources

Wiring, terminals or connectors
LHF outer parking aid sensor
PAM

L1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple front parking aid sensors recorded?

Yes

GO to L2

No	• For Diagnostic Trouble Codes (DTCs) B1B40:08, B1B40:31, B1B40:1F or B1B40:64 GO to L3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

L2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.

Is the front bumper wiring harness OK?

Yes

GO to L3

No	REPAIR or INSTALL a new front bumper wiring harness.

L3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect LHF outer parking aid sensor C1428 .

Ignition ON.

Measure:
Click to display 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 FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1428-1 C1428-3

Is the voltage greater than 9 volts?

Yes

GO to L5

No	REPAIR the circuit.

L5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226B .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1428-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to L6

L6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1428-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to L7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1428-2 C1428-1

C1428-2 C1428-3

Are the resistances greater than 10,000 ohms?

Yes

GO to L8

No	REPAIR the affected circuits.

L8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1428-1		C4226B-2
C1428-2		C4226B-10
C1428-3		C4226B-12

Are the resistances less than 3 ohms?

Yes

GO to L9

No	REPAIR the affected circuit.

L9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226B .

Install a known good sensor for the suspect LHF outer parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to L10

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

L10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B42:08	Left Front Inner Sensor: Bus Signal/Message Failures	A continuous and on-demand DTC that sets in the PAM when there is a message failure on the LIN for the LHF inner parking aid sensor.
PAM B1B42:31	Left Front Inner Sensor: No Signal	A continuous and on-demand DTC that sets in the PAM when no signal is received on the LIN for the LHF inner parking aid sensor.
PAM B1B42:1F	Left Front Inner Sensor: Circuit Intermittent	A continuous and on-demand DTC that sets in the PAM when an intermittent fault is detected on the LIN for the LHF inner parking aid sensor.
PAM B1B42:64	Left Front Inner Sensor: Signal Plausibility Failure	A continuous and on-demand DTC that sets in the PAM when there is no response from the LHF inner parking aid sensor.

Possible Sources

Wiring, terminals or connectors
LHF inner parking aid sensor
PAM

M1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are Diagnostic Trouble Codes (DTCs) for multiple front parking aid sensors recorded?

Yes

GO to M2

No	• For Diagnostic Trouble Codes (DTCs) B1B42:08, B1B42:31, B1B42:1F or B1B42:64 GO to M3 • For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the PAM DTC Chart in this section.

M2 CHECK THE FRONT BUMPER WIRING HARNESS

Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.

Is the front bumper wiring harness OK?

Yes

GO to M3

No	REPAIR or INSTALL a new front bumper wiring harness.

M3 CHECK FOR VOLTAGE TO THE SENSOR

Ignition OFF.

Disconnect LHF inner parking aid sensor C1429 .

Ignition ON.

Measure:
Click to display 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 FOR GROUND AT THE SENSOR

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1429-1 C1429-3

Is the voltage greater than 9 volts?

Yes

GO to M5

No	REPAIR the circuit.

M5 CHECK THE SENSOR FOR A SHORT TO POWER

Disconnect PAM C4226B .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1429-2 Ground

Is any voltage present?

Yes

REPAIR the affected circuits.

GO to M6

M6 CHECK THE SENSOR FOR A SHORT TO GROUND

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1429-2 Ground

Is the resistance greater than 10,000 ohms?

Yes

GO to M7

No	REPAIR the circuit.

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

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1429-2 C1429-1

C1429-2 C1429-3

Are the resistances greater than 10,000 ohms?

Yes

GO to M8

No	REPAIR the affected circuits.

M8 CHECK THE SENSOR CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C1429-1		C4226B-2
C1429-2		C4226B-4
C1429-3		C4226B-12

Are the resistances less than 3 ohms?

Yes

GO to M9

No	REPAIR the affected circuit.

M9 INSTALL A KNOWN GOOD SENSOR

Connect PAM C4226B .

Install a known good sensor for the suspect LHF inner parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs) and repeat the self-test.

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

Yes

GO to M10

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

M10 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B44:96	Right Rear Outer Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the RHR outer parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B46:96	Right Rear Inner Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the RHR inner parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B48:96	Left Rear Outer Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the LHR outer parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B50:96	Left Rear Inner Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the LHR inner parking aid sensor has internally failed or has an incorrect attenuation time.

Possible Sources

Rear parking aid sensor
PAM

N1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

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

Yes

For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.

GO to N2

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

NOTE: Make sure the area around the vehicle is clear of anything that can activate the parking aid system.

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

Make sure the parking aid sensors are flush-mounted in their bezel.

Ignition ON.

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

Access the PAM and monitor the LRO_DIST (cm) PID

Access the PAM and monitor the RRI_DIST (cm) PID

Access the PAM and monitor the RRO_DIST (cm) PID
The PID reads 2,540mm (100in) on a correctly functioning sensor.

Does the PID read 2,540mm (100in)?

Yes

GO to N3

GO to N4

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

NOTE: Make sure the area around the vehicle is clear of anything that can activate the parking aid system.

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

Access the PAM and monitor the LRO_DIST (cm) PID

Access the PAM and monitor the RRI_DIST (cm) PID

Access the PAM and monitor the RRO_DIST (cm) PID

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

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

Yes

GO to N5

GO to N4

N4 CHECK THE PARKING AID SENSORS

Ignition OFF.

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

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is the concern still present?

Yes

GO to N5

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

N5 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

No	The system is operating correctly at this time. 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

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

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

Normal Operation and Fault Conditions

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B36:96	Right Front Outer Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the RHF outer parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B38:96	Right Front Inner Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the RHF inner parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B40:96	Left Front Outer Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the LHF outer parking aid sensor has internally failed or has an incorrect attenuation time.
PAM B1B42:96	Left Front Inner Sensor: Component Internal Failure	A continuous memory and on-demand DTC that sets when the LHF inner parking aid sensor has internally failed or has an incorrect attenuation time.

Possible Sources

Front parking aid sensor
PAM

O1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Check the parking aid Diagnostic Trouble Codes (DTCs).

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

Yes

For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section

GO to O2

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

NOTE: Make sure the area around the vehicle is clear of anything that can activate the parking aid system.

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

Make sure the parking aid sensors are flush-mounted in their bezel.

Ignition ON.

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

Access the PAM and monitor the LFO_DIST (cm) PID

Access the PAM and monitor the RFI_DIST (cm) PID

Access the PAM and monitor the RFO_DIST (cm) PID
The PID reads 2,540mm (100in) on a correctly functioning sensor.

Does the PID read 2,540mm (100in)?

Yes

GO to O3

GO to O4

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

NOTE: Make sure the area around the vehicle is clear of anything that can activate the parking aid system.

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

Access the PAM and monitor the LFO_DIST (cm) PID

Access the PAM and monitor the RFI_DIST (cm) PID

Access the PAM and monitor the RFO_DIST (cm) PID

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

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

Yes

GO to O5

GO to O4

O4 CHECK THE PARKING AID SENSORS

Ignition OFF.

Install a new sensor for the suspect parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

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

Is the concern still present?

Yes

GO to O5

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

O5 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

No	The system is operating correctly at this time. 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

DTC	Description	Fault Trigger Condition
PAM B1B36:97	Right Front Outer Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the RHF outer parking aid sensor detects an obstruction.
PAM B1B36:98	Right Front Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHF outer parking aid sensor detects an over temperature event.
PAM B1B38:97	Right Front Inner Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the RHF inner parking aid sensor detects an obstruction.
PAM B1B38:98	Right Front Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHF inner parking aid sensor detects an over temperature event.
PAM B1B40:97	Left Front Outer Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the LHF outer parking aid sensor detects an obstruction.
PAM B1B40:98	Left Front Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHF outer parking aid sensor detects an over temperature event.
PAM B1B42:97	Left Front Inner Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the LHF inner parking aid sensor detects an obstruction.
PAM B1B42:98	Left Front Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHF inner parking aid sensor detects an over temperature event.

Possible Sources

Aftermarket parts
Damage to the front bumper or sensor
Front parking aid sensor
PAM

P1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are parking aid Diagnostic Trouble Codes (DTCs) recorded?

Yes

For Diagnostic Trouble Codes (DTCs) B1B44:98, B1B46:98, B1B48:98 or B1B50:98; GO to P2
For Diagnostic Trouble Codes (DTCs) B1B44:97, B1B46:97, B1B48:97 or B1B50:97;GO to P4
For all other Diagnostic Trouble Codes (DTCs) REFER to the DTC Chart in this section.

GO to P3

P2 CHECK THE PARKING AID SENSOR FOR PROPER VENTILATION

NOTE: The operating temperature range for the parking aid sensors is -40°C (-40°F) to 85°C (176°F).

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

Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel.

Check for damage, debris or any aftermarket air dams that may restrict sensor ventilation.

Is there any damage or aftermarket parts restricting the ventilation to the sensor(s)?

Yes

REPAIR or REMOVE the parts as needed.

GO to P4

P3 CHECK THE PARKING AID SENSOR FOR AN OBSTRUCTION

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

Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel.

Check for damage, debris or any aftermarket air dams that may restrict sensor operation.

Is there any damage or aftermarket parts obstructing the sensor(s)?

Yes

REPAIR or REMOVE the parts as needed.

GO to P4

P4 CHECK THE PARKING AID SENSORS

Ignition OFF.

Install a known good sensor for the suspect parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is the concern still present?

Yes

GO to P5

No	The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

P5 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B44:97	Right Rear Outer Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the RHR outer parking aid sensor detects an obstruction.
PAM B1B44:98	Right Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR outer parking aid sensor detects an over temperature event.
PAM B1B46:97	Right Rear Inner Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the RHR inner parking aid sensor detects an obstruction.
PAM B1B46:98	Right Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the RHR inner parking aid sensor detects an over temperature event.
PAM B1B48:97	Left Rear Outer Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the LHR outer parking aid sensor detects an obstruction.
PAM B1B48:98	Left Rear Outer Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR outer parking aid sensor detects an over temperature event.
PAM B1B50:97	Left Rear Inner Sensor: Component Or System Operation Obstructed Or Blocked	A continuous and on-demand DTC that sets when the LHR inner parking aid sensor detects an obstruction.
PAM B1B50:98	Left Rear Inner Sensor: Component Or System Over Temperature	A continuous and on-demand DTC that sets when the LHR inner parking aid sensor detects an over temperature event.

Possible Sources

Aftermarket parts
Damage to the rear bumper or sensor
Rear parking aid sensor
PAM

Q1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Check the parking aid Diagnostic Trouble Codes (DTCs) from the self-test.

Are 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 Q4
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.

GO to Q3

Q2 CHECK THE PARKING AID SENSOR FOR PROPER VENTILATION

NOTE: The operating temperature range for the parking aid sensors is -40°C (-40°F) to 85°C (176°F).

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

Make sure the suspect parking aid sensor(s) has its heat shield and is flush-mounted in the bezel.

Check for damage, debris or any aftermarket air dams that may restrict sensor ventilation.

Check for aftermarket exhaust or other aftermarket parts.

Is there any damage or aftermarket parts restricting the ventilation to the sensor(s)?

Yes

REPAIR or REMOVE the parts as needed.

GO to Q4

Q3 CHECK THE PARKING AID SENSOR FOR AN OBSTRUCTION

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

Make sure the suspect parking aid sensor(s) is flush-mounted in the bezel.

Check for damage, debris or any aftermarket air dams that may restrict sensor operation.

Check for aftermarket exhaust or other aftermarket parts.

Is there any damage or aftermarket parts obstructing the sensor(s)?

Yes

REPAIR or REMOVE the parts as needed.

GO to Q4

Q4 CHECK THE PARKING AID SENSORS

Ignition OFF.

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

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is the concern still present?

Yes

GO to Q5

No	The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

Q5 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

PINPOINT TEST R: CONTINUOUS OR INTERMITTENT TONE WHEN NO OBSTACLES OR FAULT CODES ARE PRESENT

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

Normal Operation and Fault Conditions

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

Possible Sources

Dirty or iced over parking aid sensor(s)
Parking aid sensor(s) installed incorrectly
Parking aid sensor(s) alignment
Isolator ring missing, damaged or misaligned

R1 VERIFY THE CONCERN

Verify the concern

Is there continuous or intermittent tone when no obstacles or fault codes are present?

Yes

Dirty or iced over parking aid sensor(s). CLEAN the rear bumper and sensors with high-pressure water.
Ice between parking aid sensor(s) and bezel(s). ALLOW time for the ice between the parking aid sensor(s) and bezel(s) to melt.
Parking aid sensor(s) locked into the rear bumper incorrectly. INSTALL the parking aid sensor(s) into the bezel(s) correctly.
Parking aid sensor(s) are not aligned correctly. CARRY OUT the elevation system check.
REFER to: Elevation System Check (413-13A Parking Aid - Vehicles With: Rear Parking Aid, General Procedures). Parking aid sensor(s) isolator ring missing, damaged or misaligned. INSTALL a new parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

No	The system is working normally at this time.

PINPOINT TEST S: THE REVERSE BRAKE ASSIST IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY

Normal Operation and Fault Conditions

The reverse brake assist system is disabled if a fault is detected any of these systems:

ABS , traction control or stability control.
Rear parking aid.
Cross traffic alert.
Rear view camera or 360 degree view camera (damage to camera mounting locations).

The reverse brake assist system is disabled if:

a door or the liftgate is open.
reverse brake assist is turned off.
rear parking aid is turned off.
cross traffic alert is turned off.
traction control is turned off.
a trailer is connected.
the battery has been disconnected (loss of EPAS learned values).
an abs or traction control event is active.

REFER to the Owner's Literature for more information.

Possible Sources

Communication concern
Parking aid system concern
ABS system concern

Visual Inspection and Pre-checks

Verify that the traction control and cross traffic alert systems are turned on in the vehicle menus.

S1 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the ABS module, PSCM , SODL , SODR , and PAM or IPMB pass the network test?

Yes

GO to S2

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

S2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

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

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

Yes

REFER to the appropriate workshop manual section to diagnosis the DTC .

GO to S3

S3 VERIFY THE OPERATION OPERATION OF THE PARKING AID AND ABS (ANTI-LOCK BRAKE SYSTEM) SYSTEM

Verify the parking aid and ABS systems operate correctly.

Does the parking aid and ABS systems operate correctly?

Yes

The system is operating normally at this time.

No	For a parking aid system concern, 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 (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing).

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

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	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 missing for 5 seconds or longer.
PAM U0293:00	Lost Communication With Hybrid/EV Powertrain Control Module 'A': No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the PCM through the GWM are missing for 5 seconds or longer.
PAM U0401:00	Invalid Data Received from ECM/PCM A: No Sub Type Information	Sets in the PAM when the PAM received invalid network data from the PCM through the GWM for 5 seconds or longer.
PAM U0594:00	Invalid Data Received From Hybrid/EV Powertrain Control Module 'A': No Sub Type Information	Sets in the PAM when the PAM received invalid network data from the PCM through the GWM for 5 seconds or longer.

Possible Sources

Communication concern
PAM
GWM
PCM

T1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to T2

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

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

Connect the diagnostic scan tool.

Check that a vehicle session can be established using the diagnostic scan tool.

Can a vehicle session be established?

Yes

GO to T3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

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

Ignition ON.

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

Clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Repeat the PAM self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). REFER to DTC Chart: PAM , in this section.

GO to T4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to T5

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to T6

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

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

Yes

GO to T7

No	The system is operating correctly at this time. The DTC may have set due to high network traffic, or an intermittent fault condition.

T7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the PCM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom present?

Yes

GO to T8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures, or incorrect module configuration.

T8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the PCM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

VIN required to access Guided Routine (PCM)

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

PINPOINT TEST U: U0121:00 OR U0415:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0121:00	Lost Communication With Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the ABS module are missing for 5 seconds or longer.
PAM U0415:00	Invalid Data Received from Anti-Lock Brake System (ABS) Control Module 'A': No Sub Type Information	Sets in the PAM when the PAM received invalid network data from the ABS module through the GWM for 5 seconds or longer.

Possible Sources

Communication concern
ABS module
PAM

U1 VERIFY THE CUSTOMER CONCERN

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to U2

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

U2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the ABS module pass the network test?

Yes

GO to U3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

U3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) CONTROL MODULE SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to the DTC Chart: PAM in this section.

GO to U4

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to U5

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

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

Is DTC U0121:00 or U0415:00 present?

Yes

GO to U6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

U6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the ABS module or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to U7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

U7 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the ABS module connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ABS module.
REFER to: Hydraulic Control Unit (HCU) - Vehicles With: Vacuum Brake Booster (206-09 Anti-Lock Brake System (ABS) and Stability Control, Removal and Installation).

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

PINPOINT TEST V: U0131:00 OR U0420:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0131:00	Lost Communication With Power Steering Control Module 'A': No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the PSCM are missing for 5 seconds or longer.
PAM U0420:00	Invalid Data Received from Power Steering Control Module 'A': No Sub Type Information	Sets in the PAM when the PAM received invalid network data from the PSCM through the GWM for 5 seconds or longer.

Possible Sources

Communication concern
PSCM
PAM

V1 VERIFY THE CUSTOMER CONCERN

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to V2

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

V2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the PSCM pass the network test?

Yes

GO to V3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

V3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) CONTROL MODULE SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to the DTC Chart: PAM in this section.

GO to V4

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to V5

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (CMDTCs).

Is DTC U0131:00 or U0420:00 present?

Yes

GO to V6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

V6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the PSCM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to V7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

V7 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the PSCM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

VIN required to access Guided Routine (EPAS)

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

PINPOINT TEST W: U0140:00 OR U0422:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

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

Possible Sources

Communication concern
GWM concern
BCM
PAM

W1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to W2

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

W2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the BCM pass the network test?

Yes

GO to W3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

W3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to W4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to W5

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to W6

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0140:00 OR U0422:00 present?

Yes

GO to W7

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

W7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the BCM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to W8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

W8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.

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

PINPOINT TEST X: U0146:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

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

Possible Sources

Communication concern
GWM
PAM

X1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to X2

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

X2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the GWM pass the network test?

Yes

GO to X3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

X3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to X4

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to X5

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0146:00 present?

Yes

GO to X6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

X6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the GWM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to X7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

X7 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the GWM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).

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

PINPOINT TEST Y: U0155:00 OR U0423:82

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0155:00	Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the IPC through the GWM are missing for 5 seconds or longer.
PAM U0423:82	Invalid Data Received from Instrument Panel Cluster Control Module: Alive/Sequence Counter Incorrect/Not Updated	Sets in the PAM when the PAM does not receive updated parking aid data from the IPC for 5 seconds or longer.

Possible Sources

Communication concern
GWM concern
IPC
PAM

Y1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to Y2

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

Y2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the IPC pass the network test?

Yes

GO to Y3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Y3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to Y4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to Y5

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to Y6

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0155:00 or U0423:82 present?

Yes

GO to Y7

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

Y7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the IPC or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to Y8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

Y8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the IPC connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC. Refer to the appropriate Removal and Installation procedure in Section 413-01.

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

PINPOINT TEST Z: U0164:00, U0424:00 OR U0424:82

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0164:00	Lost Communication With HVAC Control Module: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the HVAC module through the GWM are missing for 5 seconds or longer.
PAM U0424:00	Invalid Data Received From HVAC Control Module: No Sub Type Information	Sets in the PAM when the PAM received invalid network data for the outside air temperature from the HVAC module through the GWM for 5 seconds or longer.
PAM U0424:82	Invalid Data Received From HVAC Control Module: Alive/Sequence Counter Incorrect/Not Updated	Sets in the PAM when the PAM does not receive updated outside air temperature data from the HVAC module for 5 seconds or longer.

Possible Sources

Communication concern
GWM concern
HVAC module
PAM

Z1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to Z2

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

Z2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the HVAC module pass the network test?

Yes

GO to Z3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

Z3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to Z4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to Z5

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to Z6

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, perform the 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 operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

Z7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the HVAC module or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to Z8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

Z8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the HVAC module connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC module.
REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module (412-00 Climate Control System - General Information, Removal and Installation).

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

PINPOINT TEST AA: U0428:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0428:00	Invalid Data Received From Steering Angle Sensor Module: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the SASM through the GWM are missing for 5 seconds or longer.

Possible Sources

Communication concern
SASM
PAM

AA1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AA2

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

AA2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the SASM pass the network test?

Yes

GO to AA3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AA3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to AA4

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

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

Are any network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to AA5

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

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0428:00 present?

Yes

GO to AA6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

AA6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the SASM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AA7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AA7 CHECK FOR CORRECT SASM (STEERING ANGLE SENSOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SASM connectors.

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

Reconnect the SASM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

PINPOINT TEST AB: U0485:82

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0184:00	Lost Communication With Radio: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the ACM through the GWM are missing for 5 seconds or longer.
PAM U0485:82	Invalid Data Received From Radio: Alive/Sequence Counter Incorrect/Not Updated	Sets in the PAM when the PAM does not receive data from the ACM for 5 seconds or longer.

Possible Sources

Communication concern
GWM concern
ACM
PAM

AB1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AB2

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

AB2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the ACM pass the network test?

Yes

GO to AB3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AB3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). REFER to DTC Chart: PAM , in this section.

GO to AB4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to AB5

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to AB6

AB6 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0485:82 present?

Yes

GO to AB7

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

AB7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the ACM , GWM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AB8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AB8 CHECK FOR CORRECT ACM (AUDIO FRONT 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
- pushed-out pins – install new pins as necessary

Reconnect the ACM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information, Removal and Installation).

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

PINPOINT TEST AC: U0212:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0212:00	Lost Communication With Steering Column Control Module: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the SCCM through the GWM are missing for 5 seconds or longer.

Possible Sources

Communication concern
SCCM
PAM

AC1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AC2

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

AC2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the SCCM pass the network test?

Yes

GO to AC3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AC3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to AC4

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

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to AC5

AC5 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0212:00 present?

Yes

GO to AC6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

AC6 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the SCCM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AC7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AC7 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the SCCM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

PINPOINT TEST AD: U0252:00 OR U0553:82

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0252:00	Lost Communication With Lighting Control Module- Rear 'B': No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the TRM through the GWM are missing for 5 seconds or longer.
PAM U0553:82	Invalid Data Received From Lighting Control Module-Rear 'B': Alive/Sequence Counter Incorrect/Not Updated	Sets in the PAM when the PAM does not receive updated trailer tow present data from the TRM for 5 seconds or longer.

Possible Sources

Network comunication concern
GWM concern
TRM
PAM

AD1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AD2

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

AD2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the TRM pass the network test?

Yes

GO to AD3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AD3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs). REFER to DTC Chart: PAM , in this section.

GO to AD4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to AD5

AD5 PERFORM THE TRM (TRAILER MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to AD6

AD6 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0252:00 or U0553:82 present?

Yes

GO to AD7

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

AD7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the TRM , GWM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AD8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AD8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the TRM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

PINPOINT TEST AE: U0554:00 OR U0554:82

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0253:00	Lost Communication With Accessory Protocol Interface Module: No Sub Type Information	Sets in continuous memory in the PAM if data messages received from the APIM through the GWM are missing for 5 seconds or longer.
PAM U0554:00	Invalid Data Received From Accessory Protocol Interface Module: No Sub Type Information	Sets in the PAM when the PAM v received invalid network data from the APIM through the GWM for 5 seconds or longer.
PAM U0554:82	Invalid Data Received From Accessory Protocol Interface Module: Alive/Sequence Counter Incorrect/Not Updated	Sets in the PAM when the PAM does not receive updated from the APIM for 5 seconds or longer.

Possible Sources

Communication concern
GWM concern
APIM
PAM

AE1 VERIFY THE CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to AE2

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

AE2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform the network test.

Does the APIM pass the network test?

Yes

GO to AE3

No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

AE3 PERFORM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to DTC Chart: PAM in this section.

GO to AE4

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

Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

GO to AE5

AE5 PERFORM THE APIM (SYNC MODULE) SELF-TEST

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

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

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

GO to AE6

AE6 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

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

Ignition OFF.

Ignition ON.

Wait 10 seconds.

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

Check the PAM Diagnostic Trouble Codes (DTCs).

Is DTC U0554:00 or U0554:82 present?

Yes

GO to AE7

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic, or an intermittent fault condition.

AE7 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI , or the PMI may not have been carried out.

CHECK the vehicle service history for recent service actions related to the APIM or PAM . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into customer vehicle
  - return the swapped module to source vehicle and obtain new replacement module
  - if a new replacement module is installed, PERFORM PMI using as-built data

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AE8

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AE8 CHECK FOR CORRECT 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
- pushed-out pins – install new pins as necessary

Reconnect the APIM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

VIN required to access Guided Routine (APIM)

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

PINPOINT TEST AF: U1000:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U1000:00	Solid State Driver Protection Active -Driver Disabled: No Sub Type Information	Sets in the PAM when the PAM repetitive excessive current draw for the audible parking aid system.

Possible Sources

Wiring
Parking aid sensor
PAM

AF1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

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

Wait 10 seconds.

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

Are any DTC other than U1000:00 retrieved?

Yes

RETRIEVE and REPAIR all other PAM Diagnostic Trouble Codes (DTC). REFER to the PAM DTC chart in this section.

GO to AF2

AF2 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL 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
- pushed-out pins – install new pins as necessary

Reconnect the PAM connectors. Make sure they seat and latch correctly.

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

Is the concern still present?

Yes

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

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

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U2024:41	Control Module Cal-Config Data: General Checksum Failure	Sets in the PAM due to check sum error.
PAM U2100:00	Initial Configuration Not Complete: No Sub Type Information	Sets in the PAM due to incomplete or incorrect PMI procedures.
PAM U2101:00	Control Module Configuration Incompatible: No Sub Type Information	Sets in the PAM due to incomplete or incorrect PMI procedures.

Possible Sources

AG1 CHECK VEHICLE HISTORY FOR RECENT SERVICE ACTIONS

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

Have any service actions been performed?

Yes

REPEAT the PMI as directed by the diagnostic scan tool.

GO to AG2

AG2 RECONFIGURE THE MODULE

Ignition ON.

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

Verify that the PAM functions correctly.

Does the PAM functions correctly?

Yes

The system is operating correctly at this time. The concner may have been caused by incomplete or incorrect PMI procedure.

No	If the PAM fails to retain configuration data. INSTALL a new PAM , REFER to: Parking Assist Control Module (PAM) (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

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

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM U0300:57	Internal Control Module Software Incompatibility: Invalid/Incompatible Software Component	Sets in the PAM when invalid or incompatible software is detected.
PAM U3000:44	Control Module: Data Memory Failure	Sets in the PAM when the PAM fails the read write check.
PAM U3000:45	Control Module: Program Memory Failure	Sets in the PAM when there is a ROM memory checksum failure.
PAM U3000:46	Control Module: Calibration/Parameter Memory Failure	Sets in the PAM when the PAM detects a read write failure in the EEPROM.
PAM U3000:49	Control Module: Internal Electronic Failure	Sets in the PAM when module detects an internal failure.

Possible Sources

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

Ignition ON.

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

Wait 10 seconds.

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

Is DTC U0300:57, U3000:44 U3000;45, U300046 or U3000:49 retrieved?

Yes

INSTALL a new PAM ,
REFER to: Parking Assist Control Module (PAM) (413-13A Parking Aid - Vehicles With: Rear Parking Aid, Removal and Installation).

No	The system is operating correctly at this time.

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