LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 557 (MULTIFUNCTION Electronic Modules) >> Diagnosis And Testing >> Body Control Module (BCM) >> Pinpoint Tests >> Pinpoint Test B : DTC U3003:16 >> Pinpoint Test B : DTC U3003:16

Pinpoint Test B : DTC U3003:16

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. B1 RECHECK THE BCM DTCs

    • Ignition ON.
    • Using a diagnostic scan tool, perform BCM self-test.
    • Clear the DTCs. Repeat the BCM self-test.

    Is DTC U3003:16 still present? 

    Yes  GO to  B2.
    No  The system is operating normally at this time. The DTC may have been set due to a previous low battery voltage condition.

  2. B2 CHECK FOR CHARGING SYSTEM DTCs IN THE PCM

    • Using a diagnostic scan tool, perform PCM self-test.
    • Retrieve the CMDTCs from the PCM.

    Are any charging system DTCs set in the PCM ? 

    Yes  REFER to Charging System .
    No  GO to  B3.

  3. B3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

    • Ignition OFF.

    Is the battery OK and fully charged? 

    Yes  GO to  B4.
    No  REFER to Charging System , Symptom Chart: Charging System.

  4. B4 CHECK THE BCM VOLTAGE PID

    • Ignition ON.
    • Measure and record:
      Positive Lead Measurement / Action Negative Lead
      GFD135809Courtesy of FORD MOTOR COMPANY
      GFD134422Courtesy of FORD MOTOR COMPANY
      GFD136643Courtesy of FORD MOTOR COMPANY
    • Using a diagnostic scan tool, view BCM voltage PID (V_BATT).

    Is the voltage within 0.5 volt of the recorded battery voltage? 

    Yes  GO to  B7.
    No  GO to  B5.

  5. B5 CHECK THE BCM VOLTAGE SUPPLY

    • Ignition OFF.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280G-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage within 0.5 volt of the recorded battery voltage? 

    Yes  GO to  B6.
    No  REPAIR the circuit for high resistance. CLEAR the DTC.

  6. B6 CHECK THE BCM GROUND CIRCUITS FOR HIGH RESISTANCE

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280D-16
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2280D-25
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  B7.
    No  REPAIR the circuit for high resistance. CLEAR the DTC.

  7. B7 CHECK FOR CORRECT BCM OPERATION

    • Disconnect 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 On-Line Automotive Service Information System (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, 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. CLEAR the DTCs.
scientia non olet · About LEMON Manuals