Lincoln Navigator Manuals

Lincoln Navigator: Parking Aid / Parking Aid. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Instrumentation and Warning Systems / Parking Aid / Parking Aid. Diagnosis and Testing

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).


Module DTC Description Action
IPMA B1303:9E Park Assist Switch: Stuck On GO to Pinpoint Test D
IPMA B1B36:08 Right Front Outer Sensor: Bus Signal/Message Failures GO to Pinpoint Test I
IPMA B1B36:96 Right Front Outer Sensor: Component Internal Failure GO to Pinpoint Test N
IPMA B1B36:98 Right Front Outer Sensor: Component Or System Over Temperature GO to Pinpoint Test O
IPMA B1B38:08 Right Front Inner Sensor: Bus Signal/Message Failures GO to Pinpoint Test J
IPMA B1B38:96 Right Front Inner Sensor: Component Internal Failure GO to Pinpoint Test N
IPMA B1B38:98 Right Front Inner Sensor: Component Or System Over Temperature GO to Pinpoint Test O
IPMA B1B40:08 Left Front Outer Sensor: Bus Signal/Message Failures GO to Pinpoint Test K
IPMA B1B40:96 Left Front Outer Sensor: Component Internal Failure GO to Pinpoint Test N
IPMA B1B40:98 Left Front Outer Sensor: Component Or System Over Temperature GO to Pinpoint Test O
IPMA B1B42:08 Left Front Inner Sensor: Bus Signal/Message Failures GO to Pinpoint Test L
IPMA B1B42:96 Left Front Inner Sensor: Component Internal Failure GO to Pinpoint Test N
IPMA B1B42:98 Left Front Inner Sensor: Component Or System Over Temperature GO to Pinpoint Test O
IPMA B1B44:08 Right Rear Outer Sensor: Bus Signal/Message Failures GO to Pinpoint Test E
IPMA B1B44:96 Right Rear Outer Sensor: Component Internal Failure GO to Pinpoint Test M
IPMA B1B44:98 Right Rear Outer Sensor: Component Or System Over Temperature GO to Pinpoint Test P
IPMA B1B46:08 Right Rear Inner Sensor: Bus Signal/Message Failures GO to Pinpoint Test F
IPMA B1B46:96 Right Rear Inner Sensor: Component Internal Failure GO to Pinpoint Test M
IPMA B1B46:98 Right Rear Inner Sensor: Component Or System Over Temperature GO to Pinpoint Test P
IPMA B1B48:08 Left Rear Outer Sensor: Bus Signal/Message Failures GO to Pinpoint Test G
IPMA B1B48:96 Left Rear Outer Sensor: Component Internal Failure GO to Pinpoint Test M
IPMA B1B48:98 Left Rear Outer Sensor: Component Or System Over Temperature GO to Pinpoint Test P
IPMA B1B50:08 Left Rear Inner Sensor: Bus Signal/Message Failures GO to Pinpoint Test H
IPMA B1B50:96 Left Rear Inner Sensor: Component Internal Failure GO to Pinpoint Test M
IPMA B1B50:98 Left Rear Inner Sensor: Component Or System Over Temperature GO to Pinpoint Test P
IPMA B1B57:11 Front Sensors Power Circuit: Circuit Short To Ground GO to Pinpoint Test B
IPMA B1B58:11 Rear Sensors Power Circuit: Circuit Short To Ground GO to Pinpoint Test C

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
  • IPMA
 
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) 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 Q
The parking aid audio tones are inoperative
  • Refer to the Pinpoint Test
  GO to Pinpoint Test A
The parking aid switch is inoperative or does not operate correctly
  • Refer to the Pinpoint Test
  GO to Pinpoint Test D
The reverse brake assist is inoperative or does not operate correctly
  • Refer to the Pinpoint Test
 
REFER to: Blind Spot Information System (419-04A Side and Rear Vision, Diagnosis and Testing).
Sensor blockage
  • Refer to the Pinpoint Test
  GO to Pinpoint Test Q
The parking aid menu is not available in the message center and cannot be deactivated
  • A MyKey® restricted key is in use
Normal operation.

Pinpoint Test(s)


PINPOINT TEST A: THE AUDIBLE PARKING AID IS INOPERATIVE

NOTE: Before disconnecting the IPMA 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. 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 (413-13A Parking Aid, Description and Operation).

Possible Sources

  • Parking aid system disabled
  • Communication concern
  • IPMA
  • IPC concern
  • TR input concern
A1 CARRY OUT A NETWORK TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out a network test.

Do all modules pass the network test?
Yes GO to A2
No DIAGNOSE any communication concerns.
REFER to: Controller Area Network (CAN) Module Communications Network (418-00A Controller Area Network (CAN) Module Communications Network, Diagnosis and Testing).

A2 CHECK THE IPMA (IMAGE PROCESSING MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using the diagnostic scan tool, carry out the IPMA self-test.

Are any parking aid Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to the appropiate DTC Chart in this section.
No GO to A3

A3 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
  • Using the diagnostic scan tool, carry out the IPC self-test.

Are any IPC Diagnostic Trouble Codes (DTCs) recorded?
Yes
REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
No 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 (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 (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).

A7 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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: FRONT SENSORS POWER CIRCUIT - B1B57:11

NOTE: Before disconnecting the IPMA 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 IPMA supplies voltage to the front parking aid sensors via a common circuit.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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)
  • IPMA
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 IPMA 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, 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 IPMA 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, 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 C1607.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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 C1608.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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 IPMA 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, 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 IPMA 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, Removal and Installation).

B8 CHECK THE FRONT PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect IPMA C242A .
  • Measure:
    Click to display connectors

     


    Positive Lead Measurement / Action Negative Lead
      C242A-22   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
      C242A-22   C242A-11

Is the resistance greater than 10,000 ohms?
Yes GO to B10
No REPAIR the circuit.

B10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 C: REAR SENSORS POWER CIRCUIT - B1B58:11

NOTE: Before disconnecting the IPMA 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 IPMA supplies voltage to the rear parking aid sensors via a common circuit.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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
  • IPMA
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 C4009.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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, 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 C4010.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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, 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 C4012.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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, 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 C4011.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA 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, Removal and Installation).

C6 CHECK THE RHR (RIGHT-HAND REAR) ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT
  • Ignition OFF.
  • Disconnect: RHR active park assist sensor C4421.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.

Is DTC B1B58:11 present?
Yes GO to C7
No INSTALL a new RHR active park assist 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) ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT
  • Ignition OFF.
  • Disconnect: LHR Active Park Assist Sensor C4420.
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.

Is DTC B1B58:11 present?
Yes GO to C8
No INSTALL a new LHR active park assist 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 IPMA C242A .
  • Measure:
    Click to display connectors

     


    Positive Lead Measurement / Action Negative Lead
      C242A-15   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
      C242A-15   C242A-4

Is the resistance greater than 10,000 ohms?
Yes GO to C10
No REPAIR the circuit.

C10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 D: THE PARKING AID 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, Description and Operation).

DTC Fault Trigger Conditions

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

Possible Sources

  • Communication network concern
  • Parking aid switch
  • IPMA
D1 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 operates. REFER to the Owner's Manual.
No GO to D2

D2 CHECK THE IPMA (IMAGE PROCESSING MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
  • Using a diagnostic scan tool, carry out the IPMA self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B1303:9E, GO to D3
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No GO to D4

D3 CHECK THE PARKING AID SWITCH CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect IPMA C242A .
  • Disconnect All-Terrain Control Module C3393 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3393-6   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D6
No REPAIR the circuit.

D4 CHECK THE PARKING AID SWITCH CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect IPMA C242A .
  • Disconnect All-Terrain Control Module C3393 .
  • Measure:
    Click to display connectors

     


    Positive Lead Measurement / Action Negative Lead
      C3393-6   C242A-24

Is the resistance less than 3 ohms?
Yes GO to D5
No REPAIR the circuit.

D5 CHECK THE PARKING AID SWITCH GROUND CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C3393-4   Ground

Is the resistance less than 3 ohms?
Yes GO to D6
No REPAIR the circuit.

D6 CHECK THE PARKING AID SWITCH OPERATION
  • Connect All-Terrain Control Module C3393 .
  • Measure while pressing and releasing the parking aid switch:
    Click to display connectors

     


    Positive Lead Measurement / Action Negative Lead
      C242A-24   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 D7
No INSTALL a new All-Terrain Control Module.
REFER to: All Terrain Control Module (ATCM) (307-07A Four-Wheel Drive Systems, Removal and Installation).

D7 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 E: RIGHT REAR OUTER SENSOR - B1B44:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B44:08 Right Rear Outer Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the RHR outer parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • RHR outer parking aid sensor
  • IPMA
E1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 E2
No • For DTC B1B44:08 GO to E3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA DTC Chart in this section.

E2 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 E3
No REPAIR or INSTALL a new rear bumper wiring harness.

E3 CHECK FOR VOLTAGE TO THE SENSOR
  • Ignition OFF.
  • Disconnect RHR outer parking aid sensor C4011 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4011-1 Ground

Is the voltage greater than 9 volts?
Yes GO to E4
No REPAIR the circuit.

E4 CHECK FOR GROUND AT THE SENSOR
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4011-1   C4011-3

Is the voltage greater than 9 volts?
Yes GO to E5
No REPAIR the circuit.

E5 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect IPMA C242A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4011-2 Ground

Is any voltage present?
Yes REPAIR the affected circuits.
No GO to E6

E6 CHECK THE SENSOR FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4011-2 Ground

Is the resistance greater than 10,000 ohms?
Yes GO to E7
No REPAIR the circuit.

E7 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
      C4011-2   C4011-1
      C4011-2   C4011-3

Are the resistances greater than 10,000 ohms?
Yes GO to E8
No REPAIR the affected circuits.

E8 CHECK THE SENSOR CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Measure:

     


    Positive Lead Measurement / Action Negative Lead
      C4011-1   C242A-15
      C4011-2   C242A-6
      C4011-3   C242A-4

Are the resistances less than 3 ohms?
Yes GO to E9
No REPAIR the affected circuit.

E9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect RHR outer parking aid sensor.
    REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B44:08 still present?
Yes GO to E10
No INSTALL a new RHR outer parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

E10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 F: RIGHT REAR INNER SENSOR - B1B46:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B46:08 Right Rear Inner Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the RHR inner parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • RHR inner parking aid sensor
  • IPMA
F1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B46:08 GO to F3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 inner parking aid sensor C4012 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4012-1 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
      C4012-1   C4012-3

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 IPMA C242A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4012-2 Ground

Is any voltage present?
Yes REPAIR the affected circuits.
No 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
      C4012-2 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
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4012-2   C4012-1
      C4012-2   C4012-3

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
      C4012-1   C242A-15
      C4012-2   C242A-5
      C4012-3   C242A-4

Are the resistances less than 3 ohms?
Yes GO to F9
No REPAIR the affected circuit.

F9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect RHR inner parking aid sensor.
    REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B46:08 still present?
Yes GO to F10
No INSTALL a new RHR inner parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

F10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 G: LEFT REAR OUTER SENSOR - B1B48:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B48:08 Left Rear Outer Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the LHR outer parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • LHR outer parking aid sensor
  • IPMA
G1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B48:08 GO to G3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 LHR outer parking aid sensor C4009 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4009-1 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
      C4009-1   C4009-3

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 IPMA C242A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4009-2 Ground

Is any voltage present?
Yes REPAIR the affected circuits.
No 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
      C4009-2 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
      C4009-2   C4009-1
      C4009-2   C4009-3

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
      C4009-1   C242A-15
      C4009-2   C242A-17
      C4009-3   C242A-4

Are the resistances less than 3 ohms?
Yes GO to G9
No REPAIR the affected circuit.

G9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect LHR outer parking aid sensor.
    REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B48:08 still present?
Yes GO to G10
No INSTALL a new LHR outer parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

G10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 H: LEFT REAR INNER SENSOR - B1B50:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B50:08 Left Rear Inner Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the LHR inner parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • LHR inner parking aid sensor
  • IPMA
H1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B50:08 GO to H3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 inner parking aid sensor C4010 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4010-1 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
      C4010-1   C4010-3

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 IPMA C242A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4010-2 Ground

Is any voltage present?
Yes REPAIR the affected circuits.
No 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
      C4010-2 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
      C4010-2   C4010-1
      C4010-2   C4010-3

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
      C4010-1   C242A-15
      C4010-2   C242A-16
      C4010-3   C242A-4

Are the resistances less than 3 ohms?
Yes GO to H9
No REPAIR the affected circuit.

H9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect LHR inner parking aid sensor.
    REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B50:08 still present?
Yes GO to H10
No INSTALL a new LHR inner parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

H10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 I: RIGHT FRONT OUTER SENSOR - B1B36:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B36:08 Right Front Outer Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the RHF outer parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • RHF outer parking aid sensor
  • IPMA
I1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 I2
No • For DTC B1B36:08 GO to I3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA DTC Chart in this section.

I2 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 I3
No REPAIR or INSTALL a new front bumper wiring harness.

I3 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 I4
No REPAIR the circuit.

I4 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 I5
No REPAIR the circuit.

I5 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect IPMA C242A .
  • 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.
No 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
      C1431-2 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
      C1431-2   C1431-1
      C1431-2   C1431-3

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
      C1431-1   C242A-22
      C1431-2   C242A-10
      C1431-3   C242A-11

Are the resistances less than 3 ohms?
Yes GO to I9
No REPAIR the affected circuit.

I9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect RHF outer parking aid sensor.
    REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B36:08 still present?
Yes GO to I10
No INSTALL a new RHF outer parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

I10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 J: RIGHT FRONT INNER SENSOR - B1B38:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B38:08 Right Front Inner Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the RHF inner parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • RHF inner parking aid sensor
  • IPMA
J1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B38:08 GO to J3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 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 J4
No REPAIR the circuit.

J4 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 J5
No REPAIR the circuit.

J5 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect IPMA C242A .
  • 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.
No 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
      C1430-2 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
      C1430-2   C1430-1
      C1430-2   C1430-3

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
      C1430-1   C242A-22
      C1430-2   C242A-9
      C1430-3   C242A-11

Are the resistances less than 3 ohms?
Yes GO to J9
No REPAIR the affected circuit.

J9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect RHF inner parking aid sensor.
    REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B38:08 still present?
Yes GO to J10
No INSTALL a new RHF inner parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

J10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 K: LEFT FRONT OUTER SENSOR - B1B40:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B40:08 Left Front Outer Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the LHF outer parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • LHF outer parking aid sensor
  • IPMA
K1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B40:08 GO to K3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 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 K4
No REPAIR the circuit.

K4 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 K5
No REPAIR the circuit.

K5 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect IPMA C242A .
  • 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.
No 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
      C1428-2 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
      C1428-2   C1428-1
      C1428-2   C1428-3

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
      C1428-1   C242A-22
      C1428-2   C242A-21
      C1428-3   C242A-11

Are the resistances less than 3 ohms?
Yes GO to K9
No REPAIR the affected circuit.

K9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect LHF outer parking aid sensor.
    REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B40:08 still present?
Yes GO to K10
No INSTALL a new LHF outer parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

K10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 L: LEFT FRONT INNER SENSOR - B1B42:08

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA B1B42:08 Left Front Inner Sensor: Bus Signal/Message Failures A continuous and on-demand DTC that sets in the IPMA when there is a message failure on the LIN for the LHF inner parking aid sensor.

Possible Sources

  • Wiring, terminals or connectors
  • LHF inner parking aid sensor
  • IPMA
L1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 DTC B1B42:08 GO to L3
• For all other IPMA Diagnostic Trouble Codes (DTCs), REFER to the IPMA 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 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 L4
No REPAIR the circuit.

L4 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 L5
No REPAIR the circuit.

L5 CHECK THE SENSOR FOR A SHORT TO POWER
  • Disconnect IPMA C242A .
  • 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.
No 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
      C1429-2 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
      C1429-2   C1429-1
      C1429-2   C1429-3

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
      C1429-1   C242A-22
      C1429-2   C242A-20
      C1429-3   C242A-11

Are the resistances less than 3 ohms?
Yes GO to L9
No REPAIR the affected circuit.

L9 INSTALL A KNOWN GOOD SENSOR
  • Connect IPMA C242A .
  • Install a known good sensor for the suspect LHF inner parking aid sensor.
    REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs) and repeat the self-test.

Is DTC B1B42:08 still present?
Yes GO to L10
No INSTALL a new LHF inner parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

L10 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 M: REAR SENSORS INTERNAL FAILURE - B1B44:96, B1B46:96, B1B48:96, B1B50:96

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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.
IPMA 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.
IPMA 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.
IPMA 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
  • IPMA
M1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 REFER to the DTC Chart in this section.
No GO to M2

M2 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  IPMA  and monitor the  LRI_DIST (cm)  PID

    Access the  IPMA  and monitor the  LRO_DIST (cm)  PID

    Access the  IPMA  and monitor the  RRI_DIST (cm)  PID

    Access the  IPMA  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 M3
No GO to M4

M3 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  IPMA  and monitor the  LRI_DIST (cm)  PID

    Access the  IPMA  and monitor the  LRO_DIST (cm)  PID

    Access the  IPMA  and monitor the  RRI_DIST (cm)  PID

    Access the  IPMA  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, General Procedures).

Does the PID approximately match the distance from the test object to the rear bumper of the vehicle?
Yes GO to M5
No GO to M4

M4 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, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.

Is the concern still present?
Yes GO to M5
No INSTALL a new rear parking aid sensor.
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

M5 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 N: FRONT SENSORS INTERNAL FAILURE - B1B36:96, B1B38:96, B1B40:96, B1B42:96

NOTE: Before disconnecting the IPMA 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, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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.
IPMA 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.
IPMA 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.
IPMA 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
  • IPMA
N1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Using a diagnostic scan tool, carry out the IPMA 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 REFER to the DTC Chart in this section.
No GO to N2

N2 CHECK THE PARKING AID SENSOR DISTANCE PARAMETER IDENTIFICATIONS (PIDS) WITH NO OBJECTS 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  IPMA  and monitor the  LFI_DIST (cm)  PID

    Access the  IPMA  and monitor the  LFO_DIST (cm)  PID

    Access the  IPMA  and monitor the  RFI_DIST (cm)  PID

    Access the  IPMA  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 N3
No GO to N4

N3 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  IPMA  and monitor the  LFI_DIST (cm)  PID

    Access the  IPMA  and monitor the  LFO_DIST (cm)  PID

    Access the  IPMA  and monitor the  RFI_DIST (cm)  PID

    Access the  IPMA  and monitor the  RFO_DIST (cm)  PID

  • While monitoring the Parameter Identifications (PIDs), move a test object into and out of the detection zone in front of each sensor. For an example of a test object,
    REFER to: Azimuth System Check (413-13A 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 N5
No GO to N4

N4 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, 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 N5
No INSTALL a new front parking aid sensor.
REFER to: Front Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).

N5 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 O: FRONT SENSORS OVER TEMPERATURE - B1B36:98, B1B38:98, B1B40:98, OR B1B42:98

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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.
IPMA 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.
IPMA 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.
IPMA 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
  • IPMA
O1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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) B1B36:98, B1B38:98, B1B40:98 or B1B42:98, GO to O2
For all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No The system is operating correctly at this time.

O2 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.
No GO to O3

O3 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, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.

Is the concern still present?
Yes GO to O4
No The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

O4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 P: REAR SENSORS OVER TEMPERATURE - B1B44:98, B1B46:98, B1B48:98, OR B1B50:98

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
IPMA 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.
IPMA 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.
IPMA 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.
IPMA 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
  • IPMA
P1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE IPMA (IMAGE PROCESSING MODULE A) SELF-TEST
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the IPMA 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 all other Diagnostic Trouble Codes (DTCs), REFER to the DTC Chart in this section.
No The system is operating correctly at this time.

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 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.
No GO to P3

P3 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, Removal and Installation).
  • Ignition ON.
  • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the IPMA self-test.

Is the concern still present?
Yes GO to P4
No The cause of the concern was an inoperative parking aid sensor. The system is now operating correctly.

P4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all IPMA 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 IPMA 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 IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, 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 Q: 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 (413-13A Parking Aid, 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
  • Open tailgate
Q1 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 front and 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, 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, Removal and Installation).
REFER to: Rear Parking Aid Sensor (413-13A Parking Aid, Removal and Installation).
No The system is working normally at this time.


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    Removal NOTE: Removal steps in this procedure may contain installation details. Upper active grille shutter Remove the headlamp assemblies. Refer to: Headlamp Assembly (417-01 Exterior Lighting, Removal and Installation). Disconnect the electrical connectors and detach the wire harness retainer...

    Lincoln Navigator 2018-2025 Workshop Manual: Wheel and Tire Health and Safety Precautions. Description and Operation


      WARNING: Never inflate a tire that has been run flat without first removing the tire from the wheel to inspect for damage. A damaged tire can fail during inflation. Failure to follow this instruction may result in serious personal injury...

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    Front Stabilizer Bar Link. Removal and Installation

    Removal

    NOTICE: Suspension fasteners are critical parts that affect the performance of vital components and systems. Failure of these fasteners may result in major service expense. Use the same or equivalent parts if replacement is necessary. Do not use a replacement part of lesser quality or substitute design. Tighten fasteners as specified.

    NOTE: Removal steps in this procedure may contain installation details.

    With the vehicle in NEUTRAL, position it on a hoist.
    Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).

    NOTICE: Do not use power tools to remove or install the stabilizer bar

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