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Pinpoint Test B: The Tailgate Unlatches But The Power Tailgate Is Inoperative

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Refer to POWER TAILGATE/RETRACTABLE RUNNING BOARDS for schematic and connector information.

    Normal Operation and Fault Conditions 

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

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    RGTM P0A2F:4B Drive Motor "A" Over Temperature: Over Temperature This DTC sets when RGTM detects excessive internal heat inside the power tailgate motor.
    RGTM P0A35:4B Drive Motor "B" Over Temperature: Over Temperature This DTC sets when RGTM detects excessive internal heat inside the Power tailgate motor.
    RGTM B1515:77 Tailgate/Liftgate/Boot/Trunk: Commanded Position Not Reachable This DTC sets when RGTM detects an obstacle during a power open operation.
    RGTM B1515:97 Tailgate/Liftgate/Boot/Trunk: Component Or System Operation Obstructed Or Blocked This DTC sets when RGTM detects an obstacle during a power close operation.
    RGTM C1B14:11 Sensor Supply Voltage A: Circuit Short To Ground Sets when the RGTM detects a short to ground from the power tailgate motor sensor voltage supply circuit.
    RGTM C1B14:12 Sensor Supply Voltage A: Circuit Short To Battery Sets when the RGTM detects a short to battery from the power tailgate motor sensor voltage supply circuit.
    RGTM B144D:29 Tailgate/Liftgate/Boot/Trunk Position Sensor 1: Signal Invalid Sets when the difference in sensor count between sensor 1 and 2 is 20 pulses or more.
    RGTM B144E:29 Tailgate/Liftgate/Boot/Trunk Position Sensor 2: Signal Invalid Sets when the difference in sensor count between sensor 1 and 2 is 20 pulses or more.
    RGTM B1515:68 Tailgate/Liftgate/Boot/Trunk: Event Information Sets when the RGTM receives no signal from the right power tailgate motor sensor 3 input or the sensor inputs are out of phase.
    RGTM B1556:31 Tailgate/Liftgate/Boot/Trunk Position Sensor 3: No Signal Sets when the RGTM does not receives any pulses from either sensor 1 or sensor 2.
    RGTM B144F:11 Tailgate/Liftgate/Boot/Trunk Driver Motor: Circuit Short To Ground This DTC sets when RGTM detects a short to ground from the power tailgate motor circuitry.
    RGTM B144F:12 Tailgate/Liftgate/Boot/Trunk Driver Motor: Circuit Short To Battery This DTC sets when RGTM detects a short to voltage from the power tailgate motor circuitry.
    RGTM B144F:13 Tailgate/Liftgate/Boot/Trunk Driver Motor: Circuit Open This DTC sets when RGTM detects an open from the power tailgate motor circuitry.
    RGTM B144B:11 Tailgate/Liftgate/Boot/Trunk Driver Motor Clutch: Circuit Short To Ground This DTC sets when RGTM detects a short to ground from the power tailgate motor circuitry.
    RGTM B144B:13 Tailgate/Liftgate/Boot/Trunk Driver Motor Clutch: Circuit Open This DTC sets when RGTM detects an open from the power tailgate motor circuitry.

    Possible Sources 

    • Wiring, terminals or connectors
    • Tailgate Latch RH
    • Tailgate Latch LH
    • Power tailgate motor
    • 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. B1 CHECK THE OPERATION OF ALL THE POWER TAILGATE INPUTS

    • Ignition ON.

    • Select PARK.

    • Unlock the doors using the door lock control switch.

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

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

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

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

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

    Yes  GO to the Symptom Chart and DIAGNOSE the correct symptom.
    No  GO to  B2

  4. B2 CHECK FOR COMMUNICATION TO THE RGTM (REAR GATE TRUNK MODULE)

    • Using a diagnostic scan tool, carry out the network test.

    Does the RGTM pass the network test? 

    Yes  GO to  B3
    No  REFER to: Controller Area Network (CAN) Module Communications Network . REFER to: Ethernet Module Communications Network .

  5. B3 CHECK FOR RGTM (REAR GATE TRUNK MODULE) COMMUNICATION AND VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS)

    • Using a diagnostic scan tool, carry out 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 J  For DTC U0140:87, GO to Pinpoint Test K  For DTC U0294:87, GO to Pinpoint Test L  For DTC U3003:16, GO to Pinpoint Test M  For DTC U3003:17, GO to Pinpoint Test N 
    No  GO to  B4

  6. B4 CHECK FOR POWER TAILGATE MOTOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Is DTC B144B:11, B144B:13, B144F:11, B144F:12, B144F:13, B144D:29, B144E:29, B1515:68, B1556:31, B1515:77, B1515:97, C1B14:11, C1B14:12, P0A2F:4B or P0A35:4B present? 

    Yes  For DTC B1515:68, B1515:77 or B1515:97, DIAGNOSE all other DTC first. If no other DTC is present, manually OPERATE the Tailgate and CHECK for mechanical binding, If mechanical binding exists, REPAIR as necessary. For DTC P0A2F:4B or P0A35:4B, INSTALL a new power tailgate motor. REFER to: Power Tailgate Motor . For DTC B144D:29, B144E:29 or B1556:31, GO to  B9 For DTC B144B:11 or B144B:13 GO to  B14
    No  GO to  B5

  7. B5 CHECK THE POWER TAILGATE MOTOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect RGTM C4623.

    • Disconnect Power Tailgate Motor C4625.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-5
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-1
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  B6

  8. B6 CHECK THE POWER TAILGATE MOTOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-5
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-1
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  B7
    No  REPAIR the circuit in question.

  9. B7 CHECK THE POWER TAILGATE MOTOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-5
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4625-1

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B8
    No  REPAIR the circuits.

  10. B8 CHECK THE POWER TAILGATE MOTOR CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-5
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4623-38
      C4625-1
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4623-25

    Are the resistances less than 3 ohms? 

    Yes  GO to  B10
    No  REPAIR the circuit in question.

  11. B9 CHECK FOR POWER TAILGATE MOTOR SENSOR DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Is DTC B144D:29, B144E:29 or B1556:31 present? 

    Yes  GO to  B10
    No  GO to  B14

  12. B10 CHECK THE POWER TAILGATE MOTOR SENSOR CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect: RGTM C4623.

    • Disconnect Power Tailgate Motor C4625.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-4
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-7
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-8
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-6
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  B11

  13. B11 CHECK THE POWER TAILGATE MOTOR SENSOR CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-4
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-7
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-8
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-6
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  B12
    No  REPAIR the circuit in question.

  14. B12 CHECK THE POWER TAILGATE MOTOR SENSOR CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-8
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-7
      C4625-8
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-4
      C4625-8
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-6
      C4625-6
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-4
      C4625-6
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-7
      C4625-4
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4225-7

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  B13
    No  REPAIR the circuits in question.

  15. B13 CHECK THE POWER TAILGATE MOTOR SENSOR CIRCUITS FOR AN OPEN

    Are the resistances less than 3 ohms? 

    Yes  INSTALL a power tailgate motor in question. REFER to: Power Tailgate Motor . TEST the system for normal operation. GO to  B19
    No  REPAIR the circuit in question.

  16. B14 CHECK THE POWER TAILGATE MOTOR CLUTCH CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect: RGTM C4623.

    • Disconnect Power tailgate motor C4625.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-3
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-2
      GFD560558Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  B15

  17. B15 CHECK THE POWER TAILGATE MOTOR CLUTCH CIRCUITS FOR A SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-3
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground
      C4625-2
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  B16
    No  REPAIR the circuit in question.

  18. B16 CHECK THE POWER TAILGATE MOTOR CLUTCH CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4625-2
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4625-3

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  B17
    No  REPAIR the circuit.

  19. B17 CHECK THE POWER TAILGATE MOTOR CLUTCH CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4623-35
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4625-2
      C4623-37
      GFD560559Courtesy of FORD MOTOR COMPANY
      		 C4623-3

    Are the resistances less than 3 ohms? 

    Yes  GO to  B18
    No  REPAIR the circuit in question.

  20. B18 CHECK FOR OTHER TAILGATE LATCH DIAGNOSTIC TROUBLE CODES (DTCS)

    • View the results from the RGTM self-test.

    Are any other RGTMDTCs present? 

    Yes  For all other DTCs, REFER to the DTC Chart(s) .
    No  For DTC B1451:29 or B1453:29, GO to Pinpoint Test D 

  21. B19 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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