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Pinpoint Test M : U3003:62

  1. Refer to Parking Aid for schematic and connector information.

    Normal Operation and Fault Conditions 

    The PAM receives voltage through BCM fuse 4 (5A) when the ignition is on.

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PAM U3003:62 Battery Voltage: Signal Compare Failure Sets in continuous memory in the PAM when the vehicle voltage message sent from the BCM varies by more than 2 volts from the actual voltage measured by the PAM for 10 seconds or more.

    Possible Sources 

    • Wiring, terminals or connectors
    • Communication concern
    • Battery voltage concern
    • PAM

  2. M1 PERFORM A NETWORK TEST

    • Ignition ON.

    • Using a diagnostic scan tool, perform a network test.

    Do all modules pass the network test? 

    Yes  GO to  M2
    No  REFER to: Communications Network .

  3. M2 CHECK THE BCM (BODY CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, check the BCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  REFER to: Body Control Module (BCM) .
    No  GO to  M3

  4. M3 RECHECK THE PAM (PARKING ASSIST CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

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

    • Ignition OFF.

    • Ignition ON.

    • Wait 10 seconds.

    • Using a diagnostic scan tool, check the PAM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Is DTC U3003:62 still present? 

    Yes  GO to  M4
    No  CLEAR the Diagnostic Trouble Codes (DTCs). The system is operating correctly at this time. The DTC may have been set due to a recent low battery voltage or jump starting condition.

  5. M4 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT

    • Ignition OFF.

    • Disconnect PAM C4014A.

    • Ignition ON.

    • Measure and record the battery voltage.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4014A-1
      GFD311352Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage measured at the PAM within 2 volts of the recorded battery voltage? 

    Yes  GO to  M5
    No  REPAIR the circuit.

  6. M5 CHECK THE PAM (PARKING ASSIST CONTROL MODULE) GROUND CIRCUIT

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4014A-8
      GFD311351Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  M6
    No  REPAIR the circuit.

  7. M6 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect the 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 Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PAM. REFER to: Parking Assist Control Module (PAM) .
    No  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
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