LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 576 (Exterior Lighting System) >> Diagnosis And Testing >> Headlamps Navigator >> Pinpoint Tests >> Pinpoint Test T : DTC U0100:00 >> Pinpoint Test T : DTC U0100:00

Pinpoint Test T : DTC U0100:00

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. T1 VERIFY THE DIAGNOSTIC SCAN TOOL CAN COMMUNICATE WITH THE PCM

    • Connect the diagnostic scan tool.
    • Ignition ON.
    • Check that a vehicle session can be established using the diagnostic scan tool.

    Can a vehicle session be established? 

    Yes  GO to  T2
    No  REFER to Module Communications Network .

  2. T2 CHECK THE HCM CMDTCs

    • Using a diagnostic scan tool, perform the HCM self-test.
    • Clear the DTCs.
    • Wait 10 seconds.
    • Repeat the HCM self-test.

    Is DTC U0100:00 retrieved again? 

    Yes  GO to  T3
    No  The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  3. T3 PERFORM THE PCM KOEO SELF-TEST

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

    Are any DTCs recorded? 

    Yes  REFER to Electronic Engine Controls .
    No  GO to  T4

  4. T4 CHECK FOR DTC U0100:00 SET IN OTHER MODULES

    • Using a diagnostic scan tool, retrieve all continuous memory DTCs.

    Is DTC U0100:00 set in another module? 

    Yes  GO to  T5
    No  GO to  T6

  5. T5 CHECK FOR CORRECT PCM OPERATION

    • Ignition OFF.
    • Disconnect and inspect all PCM 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 PCM 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 PCM. REFER to Electronic Engine Controls .
    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.

  6. T6 CHECK FOR CORRECT HCM OPERATION

    • Ignition OFF.
    • Disconnect and inspect the HCM connector.
    • 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 HCM 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 HCM. REFER to Headlamp Control Module (HCM) .
    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.
scientia non olet · About LEMON Manuals