2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*DRIVER DOOR FAILS TO UNLOCK





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
(P34) DRIVER DOOR UNLOCK RELAY OUTPUT CIRCUIT SHORT TO GROUND
 
DRIVER DOOR UNLOCK RELAY
 




Diagnostic Test

1. DTC'S PRESENT

With the scan tool, read DTCs.

Are there any Power Door Lock related codes present?

Yes


No

2. CHECK DRIVER DOOR UNLOCK RELAY



Install a substitute relay in place of the Driver Door Unlock relay in the Junction Block.
Lower the driver window.
Remove the key from the ignition switch.
Operate the door lock switch to lock and unlock positions several times.

Did the Driver Door Lock and Unlock?

Yes


Yes

3. CHECK (P34) DRIVER DOOR UNLOCK RELAY OUTPUT FOR A SHORT TO GROUND



Remove the Driver Door Unlock relay from the Junction Block.
Remove the Driver Door inner trim panel and disconnect the Driver Door Lock Motor connector.
Measure the resistance between ground and the (P34) Driver Door Unlock Relay Output circuit in the Door Lock Motor connector.

Is the resistance below 1000.0 ohms?

Yes


No