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Pinpoint Test D: The Power Liftgate Stops In The Secondary Latch Position Or The Latch Does Not Cinch

  1. Refer to Wiring Diagrams POWER LIFTGATE for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Body Closures - System Operation and Component Description .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RGTM B1515:78 Tailgate/Liftgate/Boot/Trunk: Alignment Or Adjustment Incorrect Sets when the RGTM detects the liftgate is unable to fully latch.
    RGTM B1451:29 Tailgate/Liftgate/Boot/Trunk Latch Centering Position Switch: Signal Invalid Sets when the RGTM detects the sector gear switch is not in the correct state at the beginning of self-test.
    RGTM B1453:29 Tailgate/Liftgate/Boot/Trunk Latch Position Switch: Signal Invalid Sets when the RGTM detects the latch is not latched or the inputs received from the latch are incorrect at the beginning of self-test.

    Possible Sources 

    • Liftgate alignment
    • Liftgate striker alignment
    • Mechanical binding
    • Wiring, terminals or connectors
    • Power liftgate latch
    • RGTM

  2. NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  3. D1 CHECK THE RGTM (REAR GATE TRUNK MODULE) PID (PARAMETER IDENTIFICATION)

    • Using a diagnostic scan tool, view the RGTMPID.

      • LIFTG_DECKL_AJAR

    • Monitor the PID -

      • Liftgate ajar status must show closed when the liftgate is closed.

    Do the Parameter Identifications (PIDs) agree with the liftgate latch status? 

    Yes  GO to  D2
    No  Using a diagnostic scan tool, begin the PMI process for the RGTM following the on-screen instructions. REFER to: Module Programming
     

  4. D2 CHECK THE POWER LIFTGATE POSITION SENSOR

    • Using a diagnostic scan tool, view the RGTMPID.

      • TAILGATE_POS

    • Monitor the PID -

      • Position counter must read value 0 once the liftgate is closed manually.

    Does the Parameter Identifications (PIDs) agree with liftgate position sensor status? 

    Yes  GO to  D3
    No  GO to  D4

  5. D3 CHECK THE SYSTEM BATTERY VOLTAGE INPUT TO THE LIFTGATE LATCH

    • Using a diagnostic scan tool, view the RGTMPID.

      • Gate_Lgc_V
      • Gate_Pwr_V

    • Monitor the PID -

      • Power voltage supply A and Power voltage supply B must be above 8.8 volts for unlatching

      • Power voltage supply A and Power voltage supply B must be above 10.5 volts for power operation

    Do the Parameter Identifications (PIDs) agree with the required voltage values? 

    Yes  GO to  D4
    No  REPAIR the circuit.

  6. D4 CHECK THE POWER LIFTGATE SELF TEST LEARNING STATUS

    • Using a diagnostic scan tool, view the RGTMPID.

      • LIFTG_DECKL_STS

    Does power liftgate return learned or complete? 

    Yes  GO to  D5
    No  GO to  D7

  7. D5 CHECK FOR ANTI-PINCH SWITCH DTC (DIAGNOSTIC TROUBLE CODE) B1454:11, B1454:13, B1455:11 OR B1455:13

    • Ignition ON.

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

    Is DTC B1454:11, B1454:13, B1455:11 or B1455:13 present? 

    Yes  GO to Pinpoint Test G 
    No  GO to  D6

  8. D6 CHECK FOR RGTM (REAR GATE TRUNK MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B145D:11, B145D:12 OR B145D:13

    • Review the results from the RGTM self-test.

    Is DTC B145D:11, B145D:12 or B145D:13 present? 

    Yes  GO to  D13
    No  GO to  D7

  9. D7 CHECK THE LIFTGATE LATCH PRIMARY, SECONDARY AND PAWL SWITCH PARAMETER IDENTIFICATIONS (PIDS)

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

    • Using a diagnostic scan tool, monitor the following RGTM Parameter Identifications (PIDs):

      • Primary Switch input (LIFTG_PRIM_SW)
      • Tailgate Latch's Secondary Position Signal (LATCH_SECND_SW)
      • Tailgate Latch's Power Close Unit Home Position Switch (LATCH_HOME_SW)
      • Tailgate Latch Pawl Switch (TAILGATE_PWL_SW)

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

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

      Liftgate Latch Position LIFTG_PRIM_SW LATCH_SECND_SW TAILGATE_PWL_SW LATCH_HOME_SW
      Fully unlatched Active Active Active Inactive
      Secondary (first click) Active Inactive Inactive Inactive
      Primary (second click) Inactive Inactive Inactive Inactive

    Do the switch states agree with the table? 

    Yes  GO to  D8
    No  GO to  D10

  10. D8 CHECK THE MANUAL OPERATION OF THE LIFTGATE

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

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

      • Liftgate/wedge alignment
      • Liftgate assist cylinder operation (cylinder should hold or push liftgate open when beyond half open)
      • Power liftgate motor (should move freely while manually opening and closing liftgate and be securely mounted to the liftgate and bracket)
      • Power liftgate latch (should latch completely)

    Does the liftgate open and close correctly? 

    Yes  GO to  D9
    No  REPAIR as necessary.

  11. D9 CHECK THE LIFTGATE LATCH AND STRIKER ALIGNMENT

    • Inspect the striker and latch for correct alignment.

    Is the latch and striker aligned correctly? 

    Yes  GO to  D13
    No  ALIGN the liftgate and striker. REFER to: Liftgate Alignment 
     

  12. D10 CHECK THE LIFTGATE LATCH INPUT CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Disconnect RGTM C4174A.

    • Disconnect Power Liftgate Latch C4223A.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-16
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-15
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-18
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D11
    No  REPAIR the circuit in question.

  13. D11 CHECK THE LIFTGATE LATCH INPUT CIRCUITS FOR A SHORT TO EACH OTHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-16
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4174A-15
      C4174A-16
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4174A-18
      C4174A-15
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4174A-18

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D12
    No  REPAIR the circuits in question.

  14. D12 CHECK THE LIFTGATE LATCH INPUT CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-16
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223A-1
      C4174A-15
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223A-4
      C4174A-18
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223A-3

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a new power liftgate latch. REFER to: Liftgate Latch . TEST the system for normal operation. If the concern is still present, GO to  D19
    No  REPAIR the circuit in question.

  15. D13 CHECK THE LIFTGATE LATCH CINCH MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect RGTM C4174A.

    • Disconnect Power Liftgate Latch C4223B.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-13
      GFD597484Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-1
      GFD597484Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  D14

  16. D14 CHECK THE LIFTGATE LATCH CINCH MOTOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-13
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4174A-1
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D15
    No  REPAIR the circuit in question.

  17. D15 CHECK THE LIFTGATE LATCH CINCH MOTOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-13
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4174A-1

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  D16
    No  REPAIR the circuits.

  18. D16 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-13
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223B-1
      C4174A-1
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223B-2

    Are the resistances less than 3 ohms? 

    Yes  GO to  D17
    No  REPAIR the circuit in question.

  19. D17 CHECK THE LIFTGATE LATCH MOTOR CIRCUITS FOR A SHORT TO THE SECTOR GEAR SWITCH INPUT CIRCUIT

    • Disconnect RGTM C4174B.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4223B-1
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223B-4
      C4223B-2
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223B-4

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  D18
    No  REPAIR the circuit in question.

  20. D18 CHECK THE SECTOR GEAR SWITCH INPUT CIRCUIT FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4174A-17
      GFD597483Courtesy of FORD MOTOR COMPANY
      		 C4223B-4

    Is the resistances less than 3 ohms? 

    Yes  INSTALL a new power liftgate latch. REFER to: Liftgate Latch . CLEAR the Diagnostic Trouble Codes (DTCs) and TEST the system for normal operation. If the concern is still present, GO to  D19
    No  REPAIR the circuit.

  21. D19 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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