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Pinpoint Test O: U3003:16

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Refer to POWER DISTRIBUTION for schematic and connector information. Refer to OEM GROUND DISTRIBUTION for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Interior Camera System - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    CMR U3003:16 Battery Voltage: Circuit Voltage Below Threshold A continuous DTC that sets in the driver status monitor camera module if the module detects lower than expected battery voltage on the voltage supply input circuit.

    Possible Sources 

    • Wiring, terminals or connectors
    • Charging system concern
    • Battery concern
    • Driver status monitor camera module (CMR)

  2. O1 RECHECK THE DRIVER STATUS MONITOR CAMERA MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.

    • Connect the diagnostic tool.

    • Using a diagnostic scan tool, clear the DTCs.

    • Wait 10 seconds.

    • Using a diagnostic scan tool, perform the CMR self-test.

    Is DTC U3003:16 still present? 

    Yes  GO to  O2
    No  The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

  3. O2 CHECK FOR CHARGING SYSTEM DTCS SET IN OTHER MODULES

    • Using a diagnostic scan tool, retrieve all  Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Are any charging system DTCs recorded? 

    Yes  DIAGNOSE the charging system concern. Refer to the appropriate Battery and Charging article for the procedure.
    No  GO to  O3

  4. O3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

    • Check the battery condition and verify the battery is fully charged. REFER to: Battery .

    Is the battery OK and fully charged? 

    Yes  GO to  O4
    No  If the battery is discharged, DIAGNOSE the cause of the low battery condition. REFER to: Battery Drain Check . If the battery condition fails, INSTALL a new battery. REFER to: Battery .

  5. O4 COMPARE THE DRIVER STATUS MONITOR CAMERA MODULE BATTERY VOLTAGE PID (PARAMETER IDENTIFICATION) WITH THE ACTUAL BATTERY VOLTAGE

    • Start the engine.

    • Turn on accessories (climate control blower on high speed, exterior lights).

    • Using a diagnostic scan tool,

      Access the CMR and monitor the VPWR (V) PID

    • With the engine running at idle, measure and record battery voltage:
      Positive Lead Measurement / Action Negative Lead
      GFD561161Courtesy of FORD MOTOR COMPANY
      GFD560558Courtesy of FORD MOTOR COMPANY
      GFD561162Courtesy of FORD MOTOR COMPANY

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

    Yes  TURN the engine off, GO to  O7
    No  GO to  O5

  6. O5 CHECK THE DRIVER STATUS MONITOR CAMERA MODULE VOLTAGE SUPPLY CIRCUIT

    • Ignition OFF.

    • Disconnect Driver status monitor camera module C2826A.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2826A-1
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

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

    Yes  GO to  O6
    No  REPAIR the circuit.

  7. O6 CHECK THE CORRECT DRIVER STATUS MONITOR CAMERA MODULE PROCESSOR GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2826A-12
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  GO to  O7
    No  REPAIR the circuit.

  8. O7 CHECK FOR CORRECT DRIVER STATUS MONITOR CAMERA MODULE OPERATION

    • Ignition OFF.

    • Disconnect and inspect the driver status monitor camera module 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 driver status monitor camera module 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 service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new driver status monitor camera module. REFER to: Driver Status Monitor Camera Module [CMR] .
    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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