One Passenger Door Lock Inoperative

ONE PASSENGER DOOR LOCK INOPERATIVE





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






Diagnostic Test

1. PASSENGER DOOR LATCH INOPERATIVE

NOTE: Graphics in this test show Passenger Front Latch (LHD) but the other 2 passenger latches are identical. They are also similar for RHD.





1. Turn the ignition off.
2. Disconnect the inoperative Passenger Door latch connector.
3. Connect a test light between the (P392/3) Door Lock Driver circuit and the (P303) Passenger Door Unlock Driver circuit.
4. Close the front doors or trip the 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 Passenger Door Latch.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 2

2. CHECK (P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT FOR AN OPEN




1. Disconnect the Cluster C1 connector.
2. Measure the resistance of the (P303) Passenger Door Unlock Driver circuit between the Latch connector and the Cluster C1 connector.

Is the resistance below 2.0 ohms?

No

- Repair the (P303) Passenger Door Unlock Driver circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

Yes

- Go To 3

3. CHECK (P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT FOR A SHORT TO GROUND




1. Measure the resistance between Ground and the (P303) Passenger Door Unlock Driver circuit.

Is the resistance below 1,000 ohms?

Yes

- Repair the (P303) Passenger Door Unlock Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK (P392/3) DOOR LOCK DRIVER CIRCUIT FOR AN OPEN




1. Measure the resistance of the (P392/3) Door Lock Driver circuit between the Cluster C1 connector and the Passenger Door Latch connector.

Is the resistance below 2.0 ohms?

Yes

- Repair the (P392/3) Door Lock Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (P392/3) Door Lock Driver circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.