Driver Door Ajar Circuit Open

DRIVER DOOR AJAR CIRCUIT OPEN

Driver Door Ajar Circuit Open:

POSSIBLE CAUSES
- Open (Z75) driver door ajar switch ground circuit
- Open (G75) driver door ajar switch sense circuit
- Open driver door ajar switch
- Instrument cluster

DIAGNOSTIC TEST

1. OPEN DRIVER DOOR AJAR SWITCH




Disconnect the Driver Door Latch connector.
Connect a jumper wire between the (G75) Sense circuit and the (Z75) Ground circuit.
With the DRBIII(R) in Inputs/Outputs, read the DRV DOOR AJAR SW state.

Q: Does the DRBIII(R) display CLOSED?

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

2. OPEN (Z75) DRIVER DOOR AJAR SWITCH GROUND CIRCUIT




Using a 12-volt Test Light connected to 12-volts, test the (Z75) Ground circuit in the Door Latch connector.

Q: Does the test light illuminate brightly?

YES:Go To 3
NO: Repair the (Z75) Driver Door Ajar Switch Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. OPEN (G75) DRIVER DOOR AJAR SWITCH SENSE CIRCUIT




Turn the ignition off.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the (G75) Driver Door Ajar Switch Sense circuit between the Instrument Cluster connector and the Door Latch connector.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the (G75) Driver Door Ajar Switch Sense circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test