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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2462 (Parking Aid System - Active Park Assist) >> Diagnosis And Testing >> Active Park Assist >> Pinpoint Tests >> Pinpoint Test C: DTC B129C:12 Or DTC B129D:12 >> Pinpoint Test C: DTC B129C:12 Or DTC B129D:12

Pinpoint Test C: DTC B129C:12 Or DTC B129D:12

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. C1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS 
    • Check for PAM  DTCs from the continuous and on-demand self-tests.
    • Are multiple DTCs recorded? 
    • Yes:  GO to C2  .
    • No:  For DTC B129C:12 or DTC B129D:12, GO to  C3.

      For all other DTCs, REFER to DTC CHARTS .

  2. C2 CHECK THE BUMPER WIRING HARNESS 
    • Inspect the front bumper wiring harness for opens, shorts, grounds, or corrosion.
    • Is the bumper wiring harness OK? 
    • Yes:  GO to C3  .
    • No:  REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. TEST the system for normal operation.
  3. C3 CHECK THE ACTIVE PARK ASSIST SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: Suspect Active Park Assist Sensor C1607 (Left) and/or C1608 (Right).
    • Disconnect: PAM  C4014.
    • Ignition ON.
    • Measure the voltage between the suspect active park assist sensor, harness side and ground as follows:
      CONNECTOR-PIN REFERENCE CHART

      DTC Active Park Assist Sensor Connector-Pin Circuit
      B129C:14 Left C1607-1 LMP07 (BU/WH)
      B129C:14 Left C1607-2 VMP20 (GY/OG)
      B129D:14 Right C1608-1 LMP07 (BU/WH)
      B129D:14 Right C1608-2 VMP21 (WH/BN)
      Fig 1: Measuring Voltage Between Suspect Active Park Assist Sensor, Harness Side And Ground
      G06291105Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
    • No:  GO to C4  .
  4. C4 CHECK THE ACTIVE PARK ASSIST SENSOR CIRCUITRY FOR A SHORT TOGETHER 
    • Measure the resistance between the suspect active park assist sensor, harness side and the suspect active park assist sensor, harness side as follows:
      CONNECTOR-PIN REFERENCE CHART

      DTC Active Park Assist Sensor Connector-Pin/Circuit Connector-Pin/Circuit
      B129C:14 Left C1607-2
      VMP20 (GY/OG)      		 C1607-1
      LMP07 (BU/WH)
      B129D:14 Right C1608-2
      VMP21 (WH/BN)      		 C1608-1
      LMP07 (BU/WH)
      Fig 2: Measuring Resistance Between Suspect Active Park Assist Sensor And Suspect Active Park Assist Sensor, Harness Side
      G06291106Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  If both sensor DTCs are set, GO to  C6.

      Otherwise, GO to C5  .

    • No:  REPAIR the circuits in question. CLEAR the DTCs. TEST the system for normal operation.
  5. C5 CHECK THE ACTIVE PARK ASSIST SENSORS 
    • Install a known good active park assist sensor for the suspect active park assist sensor.
    • Clear the DTCs. Repeat the self-test.
    • Test the system for normal operation.
    • Is the concern still present? 
    • Yes:  GO to C6  .
    • No:  INSTALL a new active park assist sensor (s) for the one in question. REFER to ACTIVE PARK ASSIST SENSOR . CLEAR the DTCs. TEST the system for normal operation.
  6. C6 CHECK FOR CORRECT PAM OPERATION 
    • Disconnect the PAM  connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the PAM  connector and make sure it seats correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new PAM  . REFER to PARKING AID MODULE (PAM) . TEST the system for normal operation.
    • No:  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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