2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*LEFT FRONT DOOR AJAR CIRCUIT OPEN





For a complete wiring diagram Refer to Section 8W.

Theory of Operation


The scan tool will display the door state NOT the switch state. It will display as True/False. True states that the door is ajar (open). False states that the door is NOT ajar (closed).



Possible Causes
  
LEFT FRONT DOOR AJAR SWITCH GROUND CIRCUIT OPEN
  
(G75) LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN
  
DOOR LOCK MOTOR/AJAR SWITCH
  
BODY CONTROL MODULE
  



Diagnostic Test

1. OPEN LEFT FRONT DOOR AJAR SWITCH GROUND CIRCUIT



Disconnect the Left Front Door Lock Motor/Ajar switch connector.
Using a 12-volt Test Light connected to 12-volts, test the Ground circuit.

Does the test light illuminate brightly?

Yes


No

2. CHECK FOR OPEN LEFT FRONT DOOR AJAR SWITCH



Connect a jumper wire between the Sense circuit and the Ground circuit.
With the scan tool in Data Display, read the LEFT FRONT DOOR AJAR SW state.

NOTE: For the Left Front Door Ajar state the scan tool will read “PASS” for RHD.



Does the scan tool display LEFT FRONT DOOR AJAR SW: TRUE?

Yes


No

3. CHECK FOR OPEN (G75) LEFT FRONT DOOR AJAR SWITCH SENSE CIRCUIT



Turn the ignition off.
Leave the jumper wire from the previous step connected.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance of the (G75) Left Front Door Ajar Switch Sense circuit in the BCM C1 connector.

Is the resistance below 5.0 ohms?

Yes


No