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Pinpoint Test G: The Parking Aid Module Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
  1. G1 CHECK CIRCUIT 1040 (RD/BK) FOR VOLTAGE 
    • Key in OFF position.
    • Disconnect: Parking Aid Module C4014
    • Key in ON position.
      • Fig 1: Checking Circuit For Voltage
      GF0018308Courtesy of FORD MOTOR CO.
    • Measure the voltage between the parking aid module C4014-1, circuit 1040 (RD/BK), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  G2.
    2. NO  : VERIFY the smart junction box (SJB) fuse 29 (10A) is OK. If OK, REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  2. G2 CHECK CIRCUIT 57 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit For Open
      GF0018309Courtesy of FORD MOTOR CO.
    • Measure the resistance between the parking aid module C4014-4, circuit 57 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  G3.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  3. G3 CHECK THE ISO 9141 COMMUNICATION NETWORK CIRCUIT BETWEEN THE PARKING AID MODULE AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN 
      Fig 3: Checking Circuit For Open
      GF0026045Courtesy of FORD MOTOR CO.
    • Measure the resistance between the parking aid module C4014-8, circuit 70 (LB/WH), harness side and the DLC C251-7, circuit 70 (LB/WH), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  G4.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the network test with the scan tool.
  4. G4 CHECK FOR CORRECT PARKING AID MODULE OPERATION 
    • Disconnect the parking aid module connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the parking aid module connector and make sure it seats correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new parking aid module. REFER to PARKING AID article. CLEAR the DTCs. REPEAT the network test with the scan tool.
    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 network test with the scan tool.
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