Driver Door Fails To Lock and Unlock

*DRIVER DOOR FAILS TO LOCK AND UNLOCK





For a complete wiring diagram Consult Diagrams/Electrical.





NOTE: This test does not cover a secondary latch problem on a right hand drive (RHD) vehicle.

NOTE: For JS27, refer to Latch graphics for DRIVER DOOR LATCH (RHD).

Diagnostic Test

1. TEST FOR DIAGNOSTIC TROUBLE CODES
Turn the ignition on.
With the scan tool, record and erase DTC's
Operate the Driver Door Lock Switch in all positions several times.
Cycle the ignition from on to off and wait for five seconds.
Turn the ignition on.
With the scan tool, read the active DTC's.
Does the scan tool display any Power Door Lock related DTC's?

No

- Go to 2

Yes

- Diagnose and repair the DTC(s).


2. CHECK DOOR LOCK MOTOR CIRCUIT




Turn the ignition off.
Disconnect the Driver Door Latch connector.
Connect a 12-volt test light between the (P33) Door Lock Driver and the (P238) Driver Door Unlock Driver circuits in the latch connector.
Remove the key from the ignition switch.
Close the driver door or trip the latch to the door closed position
Operate the door locks several times in the lock and unlock positions from the door lock switch and observe the test light.
Does the test light illuminate brightly when the locks are actuated in both directions?

Yes

- Replace the Driver Door Latch Assembly.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go to 3


3. (P238) DRIVER DOOR UNLOCK DRIVER CIRCUIT OPEN




Using a 12-volt test light connected to ground, check the (P238) Driver Door Unlock Driver circuit.
Turn the ignition on.
Close the driver door or trip the latch to the door closed position
With the scan tool, actuate the Driver Door Unlock Relay.
Does the test light illuminate brightly when the driver door unlock is actuated?

Yes

- Go to 4

No

- Go to 5


4. (P33) DOOR LOCK DRIVER WIRE OPEN




Using a 12-volt test light connected to ground, check the (P33) Door Lock Driver circuit.
Close the driver door or trip the latch to the door closed position
With the scan tool, actuate the Door Lock Relay.
Does the test light illuminate brightly when the door lock is actuated?

Yes

- Test Complete.

No

- Repair the (P33) Door Lock Driver wire for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

5. (P238) DRIVER DOOR UNLOCK DRIVER WIRE OPEN




Turn the ignition off.
Disconnect the Cluster C1 connector.
Measure the resistance of the (P238) Driver Door Unlock Driver wire between the Cluster C1 connector and the Driver Door Latch connector.
Is the resistance below 2.0 ohms?

Yes

- Replace the Instrument Cluster.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Repair the (P238) Driver Door Unlock Driver wire for an open.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test