Left Rear Door Ajar Circuit Short to Ground

LEFT REAR DOOR AJAR CIRCUIT SHORTED TO GROUND

Left Rear Door Ajar Circuit Shorted To Ground:

POSSIBLE CAUSES
- (G77) left rear door ajar switch sense circuit short to ground
- Left rear door ajar switch
- Instrument cluster

DIAGNOSTIC TEST

1. LEFT REAR DOOR AJAR SWITCH SHORT TO GROUND




With the scan tool in Inputs/Outputs, read the L R DOOR AJAR SW state.
While monitoring the scan tool, disconnect the Left Rear Door Latch connector.

Q: Did the Switch State change from CLOSED to OPEN?

YES: Replace the Left Rear Door Latch.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 2

2. (G77) LEFT REAR DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND




Turn the ignition off.
Disconnect the Instrument Cluster C3 harness connector.
Using a 12-volt test light connected to 12-volts, probe the (G77) Left Rear Door Ajar Switch Sense circuit and test for a short to ground.
Turn the ignition on.

Q: Does the test light illuminate brightly?

YES: Repair the (G77) Left Rear Door Ajar Switch Sense circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test