Liftgate Lock Inoperative

LIFTGATE LOCK INOPERATIVE





For a complete wiring diagram, refer to the Wiring Information .






1. LIFTGATE LATCH INOPERATIVE




1. Turn the ignition off.
2. Disconnect the Tailgate Latch connector.
3. Connect a test light between the (P304) Tailgate Lock Driver circuit and the (P406) Tailgate Unlock Driver circuit.
4. Close the front doors or trip the front door latches to the closed position.
5. Operate the door locks in both positions and observe the test light.

Does the test light illuminate brightly for approximately 300 ms. when the door locks are actuated?

Yes

- Replace the Liftgate Latch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 2

2. (P306) TAILGATE UNLOCK DRIVER CIRCUIT OPEN




1. Disconnect the TIPM C5 connector.
2. Measure the resistance of the (P306) Tailgate Unlock Driver circuit between the Latch connector and the TIPM C5 connector.

Is the resistance below 2.0 ohms?

No

- Repair the (P306) Tailgate Unlock Driver circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Go To 3

3. (P306) TAILGATE UNLOCK DRIVER CIRCUIT SHORT TO GROUND




1. Measure the resistance between Ground and the (P306) Tailgate Unlock Driver circuit.

Is the resistance below 1,000 ohms?

Yes

- Repair the (P306) Tailgate Unlock Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (P304) TAILGATE LOCK DRIVER CIRCUIT OPEN




1. Disconnect the TIPM C6 connector.
2. Measure the resistance of the (P304) Tailgate Lock Driver circuit between the TIPM C6 connector and the Tailgate Latch connector.

Is the resistance below 2.0 ohms?

Yes

- Go To 5

No

- Repair the (P304) Tailgate Lock Driver circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. (P304) TAILGATE DOOR LOCK DRIVER CIRCUIT SHORT TO GROUND




1. Measure the resistance between Ground and the (P304) Tailgate Lock Driver circuit.

Is the resistance below 1,000 ohms?

Yes

- Repair the (P304) Tailgate Lock Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the Totally Integrated Power Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.