FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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All Passenger Doors Fail To Lock And Unlock






ALL PASSENGER DOORS FAIL TO LOCK AND UNLOCK





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

Theory of Operation

This test does not cover a secondary latch problem on a right hand drive vehicle.






1. TEST FOR DIAGNOSTIC TROUBLE CODES
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs
3. Operate the Driver Door Lock Switch in all positions several times.
4. Cycle the ignition from on to off and wait for five seconds.
5. Turn the ignition on.
6. With the scan tool, read the active DTCs.

Does the scan tool display any Power Door Lock related DTCs?

No

- Go To 2

Yes

- Perform the appropriate diagnostic procedure. A L L Diagnostic Trouble Codes ( DTC ).

2. (P240) PASSENGER DOORS UNLOCK DRIVER WIRE OPEN




1. Turn the ignition off.
2. Disconnect any Door Latch Connector.
3. Measure the resistance of the (P240) Passenger Doors Unlock Driver wire between the Cluster C1 connector and the door latch connector.

Is the resistance below 5.0 Ohms?

Yes

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

No

- Repair the (P240) Passenger Doors Unlock Driver wire for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.