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Pinpoint Test D: The Power Tailgate Stops In The Secondary Latch Position

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  1. Normal Operation and Fault Conditions 

    REFER to: Power Tailgate - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RGTM B1451:29 Tailgate/Liftgate/Boot/Trunk Latch Centering Position Switch: Signal Invalid Sets when the RGTM detects the RH latch home open/close switch(es) are not in the correct state at the beginning of self-test, or no home switch transition during releasing/cinching.
    RGTM B1453:29 Tailgate/Liftgate/Boot/Trunk Latch Position Switch: Signal Invalid Sets when the RGTM detects the RH latch home open/close switch(es) are not in the correct state at the beginning of self-test, or no home switch transition during releasing/cinching.
    RGTM B15E9:29 Tailgate/Liftgate/Boot/Trunk Latch Centering Position Switch 2: Signal Invalid Sets when the RGTM detects the LH latch home open/close switch(es) are not in the correct state at the beginning of self-test, or no home switch transition during releasing/cinching.
    RGTM B15EA:29 Tailgate/Liftgate/Boot/Trunk Latch Position Switch 2: Signal Invalid Sets when the RGTM detects the LH latch home open/close switch(es) are not in the correct state at the beginning of self-test, or no home switch transition during releasing/cinching.

    Possible Sources 

    • Tailgate alignment
    • Tailgate striker alignment
    • Mechanical binding

  2. D1 CHECK THE RGTM (REAR GATE TRUNK MODULE) LATCH AND PAWL SWITCHES PARAMETER IDENTIFICATIONS (PIDS)

    • Ignition ON

    • Using a diagnostic scan tool, view RGTMPIDs.

    • Using a diagnostic scan tool, monitor the following RGTMPIDs for RH latch:

      • Access the RGTM and monitor the TAILGATE_LCK_SW_INPPID
      • Access the RGTM and monitor the TAILGATE_PWL_SWPID

    • Using a diagnostic scan tool, monitor the following RGTMPIDs for LH latch:

      • Access the RGTM and monitor the TAILGATE_LCK_SW_INPPID
      • Access the RGTM and monitor the TAILGATE_PWL_SWPID

    • NOTE: The tailgate is in the primary position when the tailgate is in the full closed position. The tailgate is in the unlatch position when the tailgate is open and completely out of the striker.

      Begin with the tailgate in the open position, then slowly close the tailgate to the secondary latch (first click) and then primary latch (second click) positions.

      Tailgate Latch State/Position Forkbolt Secondary Switch (FB1) Forkbolt Primary Switch (FB2) Tailgate Pawl Switch Home/Neutral Switch
      Normally Open Circiut Normally Closed Circiut Normally Open Circiut Normally Open Circiut
      Fully unlatched Closed (Compressed) Open (Compressed) Closed (Compressed) Open
      Secondary Open Open (Compressed) Open Open
      Primary Open Closed Open Open

    Do the switch states agree with the table? 

    Yes  GO to  D2
    No  GO to  D4

  3. D2 CHECK THE MANUAL OPERATION OF THE TAILGATE

    • Turn the power tailgate off (disable) from the message center.

    • While manually opening and closing the tailgate, check the tailgate for:

      • Power tailgate motor (should move freely while manually opening and closing tailgate and be securely mounted to the tailgate)
      • Check the suspect RH or LH Power tailgate latch (should latch completely)

    Does the tailgate open and close correctly? 

    Yes  GO to  D3
    No  REPAIR as necessary.

  4. D3 CHECK THE TAILGATE LATCH AND STRIKER ALIGNMENT

    • Inspect the striker and suspect latch for correct alignment.

    Is the latch and striker aligned correctly? 

    Yes  GO to  D7
    No  ALIGN the tailgate latch and striker.

  5. D4 CHECK THE TAILGATE LATCH INPUT CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect: RGTM C4623.

    • Disconnect: tailgate Latch RH C4626 or LH C4627.

    • Measure:

      Tailgate Cinch Latch RH 

      Positive Lead Measurement / Action Negative Lead
      C4626-7
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4626-3
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4626-6
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4626-2
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4626-8
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

      Tailgate Cinch Latch LH 

      Positive Lead Measurement / Action Negative Lead
      C4627-6
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4627-2
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4627-7
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4627-5
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4627-3
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D5
    No  REPAIR the circuit in question.

  6. D5 CHECK THE TAILGATE LATCH INPUT CIRCUITS FOR A SHORT TO EACH OTHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D6
    No  REPAIR the circuits in question.

  7. D6 CHECK THE TAILGATE LATCH CIRCUITS FOR AN OPEN

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new RH or LH tailgate latch. REFER to: Tailgate Latch . TEST the system for normal operation. If the concern is still present, GO to  D11
    No  REPAIR the circuit in question.

  8. D7 CHECK THE TAILGATE LATCH MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect RGTM C4623.

    • Disconnect suspect Power Tailgate Latch C4626 RH or C4627 LH.

    • Ignition ON.

    • Measure:

      Tailgate Cinch Latch RH 

      Positive Lead Measurement / Action Negative Lead
      C4623-31
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4623-29
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

      Tailgate Cinch Latch LH 

      Positive Lead Measurement / Action Negative Lead
      C4623-36
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4623-34
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  D8

  9. D8 CHECK THE TAILGATE LATCH MOTOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:

      Tailgate Cinch Latch RH 

      Positive Lead Measurement / Action Negative Lead
      C4623-29
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4623-31
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

      Tailgate Cinch Latch LH 

      Positive Lead Measurement / Action Negative Lead
      C4623-34
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4623-36
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D9
    No  REPAIR the circuit in question.

  10. D9 CHECK THE TAILGATE LATCH MOTOR CIRCUITS FOR A SHORT TOGETHER

    • Ignition OFF.

    • Measure:

      Tailgate Cinch Latch RH 

      Positive Lead Measurement / Action Negative Lead
      C4623-29
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4623-31

      Tailgate Cinch Latch LH 

      Positive Lead Measurement / Action Negative Lead
      C4623-34
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4623-36

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  D10
    No  REPAIR the circuits.

  11. D10 CHECK THE TAILGATE LATCH MOTOR CIRCUITS FOR AN OPEN

    • Ignition OFF.

    • Measure:

      Tailgate Cinch Latch RH 

      Positive Lead Measurement / Action Negative Lead
      C4623-29
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4627-1
      C4623-31
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4627-5

      Tailgate Cinch Latch LH 

      Positive Lead Measurement / Action Negative Lead
      C4623-34
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4627-4
      C4623-36
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4627-8

    Are the resistances less than 10, 000 ohms? 

    Yes  INSTALL a new RH or LH power tailgate latch. REFER to: Tailgate Latch . CLEAR the DTCs and TEST the system for normal operation. If the concern is still present, GO to  D11
    No  REPAIR the circuit in question.

  12. D11 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no 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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