Passenger Door Ajar Circuit Open

PASSENGER DOOR AJAR CIRCUIT OPEN

Passenger Door Ajar Circuit Open:

POSSIBLE CAUSES
- Open (Z74) passenger door ajar switch ground circuit
- Open (G74) passenger door ajar switch sense circuit
- Open passenger door ajar switch
- Instrument cluster

DIAGNOSTIC TEST

1. OPEN PASSENGER DOOR AJAR SWITCH




Disconnect the Passenger Door Latch connector.
Connect a jumper wire between the (G74) Sense circuit and the (Z74) Ground circuit.
With the DRBIII(R) in Inputs/Outputs, read the PASS DOOR AJAR SW state.

Q: Does the DRBIII(R) display CLOSED?

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

2. OPEN (Z74) PASSENGER DOOR AJAR SWITCH GROUND CIRCUIT




Using a 12-volt Test Light connected to 12-volts, test the (Z74) Ground circuit in the Door Latch connector.

Q: Does the test light illuminate brightly?

YES: Go To 3
NO: Repair the (Z74) Passenger Door Ajar Switch Ground circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. OPEN (G74) PASSENGER DOOR AJAR SWITCH SENSE CIRCUIT




Turn the ignition off.
Disconnect the Instrument Cluster C3 harness connector.
Measure the resistance of the (G74) Passenger 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 (G74) Passenger Door Ajar Switch Sense circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test