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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1187 (Body Panel System - Body Closures) >> Diagnosis And Testing >> Body Closures >> Pinpoint Tests >> Pinpoint Test A : The Power Liftgate Is Inoperative >> Pinpoint Test A : The Power Liftgate Is Inoperative

Pinpoint Test A : The Power Liftgate Is Inoperative

WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. A1 CHECK THE OPERATION OF ALL THE POWER LIFTGATE INPUTS

    • Ignition ON.

    • Select PARK.

    • Unlock the doors using the door lock control switch.

    • Close the liftgate to the full closed position (manually if necessary).

    • Open and close the power liftgate using the front interior power liftgate switch (located on the instrument panel).

    • Open and close the power liftgate using a programmed RKE transmitter.

    • Open the power liftgate using the exterior liftgate release switch.

    • Close the power liftgate using the rear interior power liftgate switch (located on the inside of the liftgate).

    Does the power liftgate power open or power close from any input? 

    Yes  GO to the Symptom Chart and DIAGNOSE the correct symptom. Refer to: Symptom Chart: Power Liftgate 
    No  GO to  A2

  2. A2 CHECK FOR COMMUNICATION TO THE RGTM (REAR GATE TRUNK MODULE)

    • Using a diagnostic scan tool, perform the network test.

    Does the RGTM pass the network test? 

    Yes  GO to  A3
    No  REFER to: Communications Network .

  3. A3 CHECK FOR RGTM (REAR GATE TRUNK MODULE) COMMUNICATION AND VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS)

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

    Is DTC U0101:87, U0140:87, U0294:87, U3003:16 or U3003:17 present? 

    Yes  For DTC U0101:87, GO to Pinpoint Test K . For DTC U0140:87, GO to Pinpoint Test L  For DTC U0294:87, GO to Pinpoint Test M . For DTC U3003:16, GO to Pinpoint Test N  For DTC U3003:17, GO to Pinpoint Test O .
    No  GO to  A4

  4. A4 CHECK FOR POWER LIFTGATE MOTOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Is DTC B144F:11, B144F:12, B144F:13 or B144F:79 present? 

    Yes  GO to  A5
    No  GO to  A9

  5. A5 CHECK THE POWER LIFTGATE MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Power Liftgate Motor C996 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-5
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-6
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  A6

  6. A6 CHECK THE POWER LIFTGATE MOTOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-5
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-6
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A7
    No  REPAIR the circuit in question.

  7. A7 CHECK THE POWER LIFTGATE MOTOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-5
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C4174A-6

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  A8
    No  REPAIR the circuits.

  8. A8 CHECK THE POWER LIFTGATE MOTOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-5
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C996-2
      C4174A-6
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C996-9

    Are the resistances less than 3 ohms? 

    Yes  GO to  A10
    No  REPAIR the circuit in question.

  9. A9 CHECK FOR POWER LIFTGATE MOTOR SENSOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Is DTC B144D:29, B144E:29, B1A59:11 or B1A59:13 present? 

    Yes  GO to  A10
    No  GO to  A14

  10. A10 CHECK THE POWER LIFTGATE MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Power Liftgate Motor C996 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174B-7
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-8
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-19
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-20
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  A11

  11. A11 CHECK THE POWER LIFTGATE MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174B-7
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-8
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-19
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174B-20
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A12
    No  REPAIR the circuit in question.

  12. A12 CHECK THE POWER LIFTGATE MOTOR SENSOR CIRCUITS FOR A SHORT TOGETHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A13
    No  REPAIR the circuits in question.

  13. A13 CHECK THE POWER LIFTGATE MOTOR SENSOR CIRCUITS FOR AN OPEN

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a power liftgate motor. Refer to: Power Liftgate Motor . TEST the system for normal operation. If the concern is still present, GO to  A20.
    No  REPAIR the circuit in question.

  14. A14 CHECK FOR LIFTGATE LATCH MOTOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Are any RGTM Diagnostic Trouble Codes (DTCs) present? 

    Yes  For DTC B145D:11, B145D:12 or B145D:13, GO to  A16
    For all other Diagnostic Trouble Codes (DTCs), REFER to DTC Chart: RGTM .
    No  GO to  A15

  15. A15 CHECK THE RGTM (REAR GATE TRUNK MODULE) LIFTGATE MOTOR SENSOR PID (PARAMETER IDENTIFICATION)

    NOTE: If the liftgate motor sensor Parameter Identifications (PIDs) are not available or the liftgate latch does not release, proceed to the next step.

    • Open the liftgate to the full open position.

    • Ignition ON.

    • Using a diagnostic scan tool, view the RGTM Parameter Identifications (PIDs).

    • Using a diagnostic scan tool, view the RGTM liftgate motor sensor PID.

    • From the full open position, slowly close the liftgate.

    Does the PID change state when the liftgate starts moving? 

    Yes  GO to  A16
    No  GO to  A10

  16. A16 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Power Liftgate Latch C4339 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-2
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-3
      GFD227147Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  A17

  17. A17 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-3
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A18
    No  REPAIR the circuit in question.

  18. A18 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C4174A-3

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  A19
    No  REPAIR the circuits in question.

  19. A19 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-2
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C4339-1
      C4174A-3
      GFD227146Courtesy of FORD MOTOR COMPANY
      		 C4339-4

    Are the resistances less than 3 ohms? 

    Yes  GO to Pinpoint Test J 
    No  REPAIR the circuit in question.

  20. A20 CHECK FOR CORRECT RGTM (REAR GATE TRUNK MODULE) OPERATION

    • Disconnect and inspect all RGTM connectors.

    • Repair:

      • 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 RGTM 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 OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RGTM. Refer to: Rear Gate Trunk Module (RGTM) .
    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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