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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1163 (Parking Aid) >> Diagnostic Tests >> Parking Aid >> Pinpoint Tests >> Pinpoint Test G: DTC C1920 and B2373 - LED #1 Circuit Short to Battery & LED #1 Circuit Failure >> Pinpoint Test G: DTC C1920 - Led #1 Circuit Failure And B2373 - Led #1 Circuit Short To Battery

Pinpoint Test G: DTC C1920 - Led #1 Circuit Failure And B2373 - Led #1 Circuit Short To Battery

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. G1 CHECK FOR RECORDED DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS 
    • Check for recorded PAM DTCs from the continuous and on-demand self-tests.
    • Are any DTCs recorded? 
    1. YES  : For DTC C1920 and B2373, go to  G2.

      For all others, REFER to DTC Charts .

    2. NO  : Go to Pinpoint Test A .
  2. G2 CHECK CIRCUIT 2339 (BN/LB) FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Parking Aid Switch C2035
    • Disconnect: PAM C2023
      • Fig 1: Checking Circuit 2339 (BN/LB) For A Short To Ground
      GF0004514Courtesy of FORD MOTOR CO.
    • Measure the resistance between the PAM C2023-5, circuit 2339 (BN/LB), harness side and ground.
    • Is the resistance greater than 10,000 ohms? 
    1. YES  : Go to  G3.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  3. G3 CHECK CIRCUIT 2339 (BN/LB) FOR AN OPEN 
      Fig 2: Checking Circuit 2339 (BN/LB) For An Open
      GF0012835Courtesy of FORD MOTOR CO.
    • Measure the resistance between the PAM C2023-5, circuit 2339 (BN/LB), harness side and the parking aid switch C2035-5, circuit 2339 (BN/LB), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  G4.
    2. NO  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. G4 CHECK CIRCUIT 2339 (BN/LB) FOR A SHORT TO VOLTAGE 
    • Key in ON position.
      • Fig 3: Checking Circuit 2339 (BN/LB) For A Short To Voltage
      GF0004516Courtesy of FORD MOTOR CO.
    • Measure the voltage between the PAM C2023-5, circuit 2339 (BN/LB), harness side and ground.
    • Is any voltage present? 
    1. YES  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
    2. NO  : Go to  G5.
  5. G5 CHECK THE PARKING AID SWITCH 
    • Install a known good parking aid switch.
    • Test the system for normal operation.
    • Is the concern still present? 
    1. YES  : Go to  G6.
    2. NO  : INSTALL a new parking aid switch. REFER to Parking Aid Switch . CLEAR the DTCs. REPEAT the self-test.
  6. G6 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 . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the scan tool data link test.
    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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