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Home >> Ford >> 2021 >> Expedition XL, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Parking Aid - Vehicles With: Active Park Assist >> Diagnosis And Testing >> Parking Aid >> Pinpoint Test(s) >> Pinpoint Test E: DTC (Diagnostic Trouble Code) B129C:96, DTC (Diagnostic Trouble Code) B129D:96 >> Pinpoint Test E: DTC (Diagnostic Trouble Code) B129C:96, DTC (Diagnostic Trouble Code) B129D:96

Pinpoint Test E: DTC (Diagnostic Trouble Code) B129C:96, DTC (Diagnostic Trouble Code) B129D:96

  1. E1 CHECK THE CONTINUOUS AND ON-DEMAND PAM (PARKING ASSIST CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.

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

    Are Diagnostic Trouble Codes (DTCs) other than DTC B129C:96 or DTC B129D:96 present? 

    Yes  DIAGNOSE all other PAM Diagnostic Trouble Codes (DTCs) first. Refer to the PAM DTC Chart .
    No  GO to  E2
  2. E2 CHECK THE FRONT ACTIVE PARK ASSIST SENSOR OPERATION

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

    • Make sure the suspect front active park assist sensor(s) is flush-mounted in the bezel.

    Does the system pass the azimuth system check? 

    Yes  The system is operating correctly at this time, the concern may have been caused by a dirty, blocked or incorrectly mounted front active park assist sensor.
    No  GO to  E3
  3. E3 INSTALL A KNOWN GOOD SENSOR

    • Ignition OFF.

    • Ignition ON.

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

    Is DTC B129C:96 or DTC B129D:96 still present? 

    Yes  GO to  E4
    No  INSTALL a new active park assist sensor for the suspect sensor. Refer to: Front Active Park Assist Sensors  .
  4. E4 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) .
    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.