*LEFT REAR DOOR AJAR CIRCUIT SHORT TO GROUND
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 |
| (G77) LEFT REAR DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND |
| DOOR LOCK MOTOR/AJAR SWITCH |
| BODY CONTROL MODULE |
Diagnostic Test
1. CHECK FOR SHORTED DOOR AJAR SWITCH
With the scan tool in Data Display, read the LEFT REAR DOOR AJAR SW state.
Disconnect the Door Lock Motor/Ajar Switch connector.
Does the scan tool display LEFT REAR DOOR AJAR SW: FALSE?
Yes
- Replace the Door Lock Motor/Ajar Switch.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Go To2
2. CHECK FOR (G77) LEFT REAR DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND
Turn the ignition off.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance between ground and the (G77) Left Rear Door Ajar Switch Sense circuit in the BCM C2 connector.
Is the resistance below 1000.0 ohms?
No
- Replace the Body Control Module in accordance with service information.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
Yes
- Repair the (G77) Left Rear Door Ajar Switch Sense circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)