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Pinpoint Test As : 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. AS1 RECHECK FOR DTC U3003:16

    • Ignition ON.
    • Using a diagnostic scan tool, clear the DTCs for the module in question.
    • Wait at least 15 seconds.
    • Using a diagnostic scan tool, repeat the self-test for the module in question.

    Is DTC U3003:16 still present? 

    Yes  GO to  AS2.
    No  The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

  2. AS2 CHECK FOR CHARGING SYSTEM DTCS IN THE PCM

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

    Are any voltage-related DTCs set in the PCM ? 

    Yes  REFER to PCM DTC Chart in Electronic Engine Controls .
    No  GO to  AS3.

  3. AS3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

    Is the battery OK and fully charged? 

    Yes  GO to  AS4.
    No  REFER to Charging System .

  4. AS4 CHECK THE VOLTAGE SUPPLY AT THE SUSPECT MODULE

    • Ignition OFF.
    • Measure and record the voltage at the battery.
    • Disconnect the suspect module.
    • Ignition ON.
    • Measure:

      ACM 

      Positive Lead Measurement / Action Negative Lead
      C240A-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      Audio DSP module 

      Positive Lead Measurement / Action Negative Lead
      C4326C-5
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4326C-6
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      APIM 

      Positive Lead Measurement / Action Negative Lead
      C2383A-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      FCIM 

      Positive Lead Measurement / Action Negative Lead
      C2402-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      Audio RCU module 

      Positive Lead Measurement / Action Negative Lead
      C3077-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

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

    Yes  GO to  AS5.
    No  REPAIR the circuit for high resistance.

  5. AS5 CHECK THE SUSPECT MODULE GROUND CIRCUIT FOR CONTINUITY

    • Measure:

      ACM 

      Positive Lead Measurement / Action Negative Lead
      C240A-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C240A-13

      Audio DSP module 

      Positive Lead Measurement / Action Negative Lead
      C4326C-5
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C4326C-15
      C4326C-5
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C4326C-16

      APIM 

      Positive Lead Measurement / Action Negative Lead
      C2383A-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C2383A-37

      FCIM 

      Positive Lead Measurement / Action Negative Lead
      C2402-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C2402-6

      Audio RCU module 

      Positive Lead Measurement / Action Negative Lead
      C3077-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 C3077-4

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

    Yes  For the ACM, GO to  AS6.For the APIM, GO to  AS7.For the audio DSP module, GO to  AS8.For the FCIM, GO to  AS9.For the audio RCU module, GO to  AS10.
    No  REPAIR the circuit for high resistance.

  6. AS6 CHECK FOR CORRECT ACM OPERATION

    • Ignition OFF.
    • Disconnect and inspect all the ACM connectors.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or pins)
      • Pushed-out pins (install new pins as necessary)
    • Reconnect the ACM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new ACM. REFER to Audio Control Module (ACM) .
    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.

  7. AS7 CHECK FOR CORRECT APIM OPERATION

    • Ignition OFF.
    • Disconnect and inspect the APIM connector.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or pins)
      • Pushed-out pins (install new pins as necessary)
    • Reconnect the APIM connector. Make sure it seats and latches correctly.
    • Wait at least 2 minutes for the APIM to re-initialize.
    • 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, APIM 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.

  8. AS8 CHECK FOR CORRECT AUDIO DSP MODULE OPERATION

    • Ignition OFF.
    • Disconnect and inspect the audio DSP module connectors.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or pins)
      • Pushed-out pins (install new pins as necessary)
    • Reconnect the audio DSP 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new audio DSP module. REFER to Audio Digital Signal Processing (DSP) Module .
    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.

  9. AS9 CHECK FOR CORRECT FCIM OPERATION

    • Ignition OFF.
    • Disconnect and inspect the FCIM connector.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or pins)
      • Pushed-out pins (install new pins as necessary)
    • Reconnect the FCIM connector. Make sure it seats and latches 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, INSTALL a new FCIM. REFER to Front Controls Interface Module (FCIM) .
    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.

  10. AS10 CHECK FOR CORRECT AUDIO RCU MODULE OPERATION

    • Ignition OFF.
    • Disconnect and inspect the audio RCU module connector.
    • Repair:
      • Corrosion (clean module pins or install new connectors or terminals)
      • Damaged or bent pins (install new terminals or pins)
      • Pushed-out pins (install new pins as necessary)
    • Reconnect the audio RCU module connector. Make sure it seats and latches 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, INSTALL a new audio RCU module. REFER to Audio Rear Control Unit (RCU) Module .
    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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