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Home >> Lincoln >> 2010 >> MKZ FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1163 (Parking Aid) >> Diagnostic Tests >> Parking Aid >> Pinpoint Tests >> Pinpoint Test B: DTCs C1700, C1703, C1706, C1709 - Parking Aid Sensor Circuit Failure or Blockage >> PINPOINT TEST B: DTCs C1700, C1703, C1706, C1709 - PARKING AID SENSOR CIRCUIT FAILURE OR BLOCKAGE

PINPOINT TEST B: DTCs C1700, C1703, C1706, C1709 - PARKING AID SENSOR CIRCUIT FAILURE OR BLOCKAGE

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CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. B1 CHECK THE RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS 
    • Check the recorded PAM DTCs from the continuous and on-demand self-tests.
    • Are multiple DTCs recorded? 
    1. YES  : Go to  B2.
    2. NO  : For DTCs C1700, C1703, C1706 or C1709, go to  B3.

      For all others, REFER to DTC Charts .

  2. B2 CHECK THE BUMPER WIRING HARNESS 
    • Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion.
    • Is the bumper wiring harness OK? 
    1. YES  : Go to  B3.
    2. NO  : REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.
  3. B3 CHECK THE SENSOR CIRCUITS FOR OPENS 
    • Key in OFF position.
    • Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 or C4012
    • Disconnect: PAM C2023
    • Measure the resistance between the PAM, harness side and the suspect parking aid sensor, harness side as follows:
      REAR SENSORS

      DTC Sensor PAM Connector- Pin Sensor Connector- Pin Circuit
      C1700 LH Outer C2023-9 C4009-1 1439 (BN/PK)
      C1700 LH Outer C2023-15 C4009-2 1441 (WH/LG)
      C1700 LH Outer C2023-12 C4009-3 1440 (DG/YE)
      C1703 RH Outer C2023-9 C4011-1 1439 (BN/PK)
      C1703 RH Outer C2023-16 C4011-2 1444 (DB/YE)
      C1703 RH Outer C2023-12 C4011-3 1440 (DG/YE)
      C1706 LH Inner C2023-9 C4010-1 1439 (BN/PK)
      C1706 LH Inner C2023-14 C4010-2 1442 (DG/WH)
      C1706 LH Inner C2023-12 C4010-3 1440 (DG/YE)
      C1709 RH Inner C2023-9 C4012-1 1439 (BN/PK)
      C1709 RH Inner C2023-13 C4012-2 1443 (WH/LB)
      C1709 RH Inner C2023-12 C4012-3 1440 (DG/YE)
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  B4.
    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  4. B4 CHECK THE SENSOR CIRCUITS FOR SHORTS TO GROUND 
    • Measure the resistance between the suspect parking aid sensor harness side and ground as follows:
      DTC Rear Sensor Connector- Pin Circuit
      C1700 LH outer C4009-2 1441 (WH/LG)
      C1703 RH outer C4011-2 1444 (DB/YE)
      C1706 LH inner C4010-2 1442 (DG/WH)
      C1709 RH inner C4012-2 1443 (WH/LB)
    • Are the resistances greater than 10,000 ohms? 
    1. YES  : If all of the parking aid sensors recorded DTCs, go to  B5.

      If one or more parking aid sensors recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor . CLEAR the DTCs. REPEAT the self-test.

    2. NO  : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  5. B5 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? 
    1. YES  : INSTALL a new PAM. REFER to Parking Aid Module . TEST the system for normal operation.
    2. NO  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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