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Pinpoint Test G : DTC U3003:16

WARNING: This page is about a different car, the 2015 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.

  1. G1 RECHECK THE BCM DTCs

    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: BCM Self-Test.
    • Using a scan tool, clear the DTCs. Repeat the BCM self-test.

    Is DTC U3003:16 still present? 

    Yes  GO to  G2.
    No  The system is operating normally at this time. The DTC may have been set due to a previous low battery voltage condition.

  2. G2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

    • Enter the following diagnostic mode on the scan tool: PCM Self-Test.
    • Using a scan tool, perform the PCM KOEO self-test.
    • Retrieve the CMDTCs from the PCM.

    Is DTC P0562, P0620, P0622, P0625, P0626 or P065B set in the PCM ? 

    Yes  REFER to Charging System .
    No  GO to  G3.

  3. G3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

    • Ignition OFF.
    • Check the battery condition and verify the battery is fully charged. REFER to Charging System .

    Is the battery OK and fully charged? 

    Yes  GO to  G4.
    No  REFER to Charging System .

  4. G4 CHECK THE BCM VOLTAGE PID

    • Ignition ON.
    • Measure and record the voltage at the battery.
    • Enter the following diagnostic mode on the scan tool: BCM DataLogger.
    • Monitor the BCM voltage PID (V_BATT).

    Is the voltage within 0.2 volt of the recorded battery voltage? 

    Yes  GO to  G7.
    No  GO to  G5.

  5. G5 CHECK THE BCM VOLTAGE SUPPLY

    • Ignition OFF.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280G-1
      GFD88335Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage within 0.2 volt of the recorded battery voltage? 

    Yes  GO to  G6.
    No  REPAIR the circuit for high resistance. CLEAR the DTC.

  6. G6 CHECK THE BCM GROUND CIRCUIT FOR HIGH RESISTANCE

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280D-25
      GFD88334Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  G7.
    No  REPAIR the circuit. CLEAR the DTC.

  7. G7 CHECK FOR CORRECT BCM OPERATION

    • Disconnect and inspect the BCM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the BCM connectors and 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 TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, Refer to BCM Hardware Testing .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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