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Home >> Audi >> 2010 >> A4 2.0T >> Repair and Diagnosis >> External Pages >> Different car >> Section 735 (Body Panel System - Body Closures) >> Diagnosis And Testing >> Power Liftgate >> Pinpoint Tests >> Pinpoint Test J : B117C >> Pinpoint Test J : B117C

Pinpoint Test J : B117C

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. J1 CHECK FOR OTHER LTM DTCs

    • View the recorded results from the LTM self-test.

    Are any DTCs present besides B117C 

    Yes  DIAGNOSE all other LTM DTCs first. REFER to the Liftgate/Trunk Module (LTM) DTC Chart .
    No  GO to  J2.

  2. J2 CHECK THE SECTOR GEAR SWITCH CIRCUITS

    • Ignition OFF.
    • Disconnect: Power Liftgate Latch C4339 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4339-4
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4339-6
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the voltages greater than 11 volts? 

    Yes  GO to  J5.
    No  GO to  J3.

  3. J3 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174B-15
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-26
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  J4.
    No  REPAIR the circuit in question.

  4. J4 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR AN OPEN

    Are the resistance less than 3 ohms? 

    Yes  GO to  J6.
    No  REPAIR the circuit in question.

  5. J5 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4339-4
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4339-6
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  CHECK the power liftgate latch connector for bent or corroded connections on the component side and harness side and REPAIR as necessary. If no concern is found, INSTALL a new power liftgate latch. REFER to Handles, Locks, Latches and Entry Systems .

  6. J6 CHECK FOR CORRECT LTM OPERATION

    • Disconnect all the LTM connectors.
    • Check for:
      • corrosion (install new connectors or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect all the LTM connectors and make sure they seat and latch correctly.
    • Operate the system and verify 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 the TSB instructions. If no TSBs address this concern, INSTALL a new LTM. REFER to Liftgate/Trunk Module (LTM) .
    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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