Service Information

Spark

Door Ajar Indicator Malfunction

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Door Ajar Switch Signal	1	2	2	--
Door Jamb Switch Ground	--	2	2	--
1. Door Ajar Indicator Always Illuminated 2. Door Ajar Indicator Inoperative

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Door Ajar Switch Signal

Door Jamb Switch Ground

1. Door Ajar Indicator Always Illuminated

2. Door Ajar Indicator Inoperative

Battery voltage is supplied at all times to the door ajar indicator the I/P fuse block. The door jamb switches are normally open when the door is fully closed. When a door is opened, the door jamb switch contacts close providing a path to ground for the door ajar indicator.

Circuit/System Verification

Observe the function of the door ajar indicator while opening and closing each door. The door ajar indicator should turn ON and OFF as each door is opened and closed.

Circuit/System Testing

Ignition OFF, disconnect the wiring harness plug at the appropriate door jamb switch.
Ignition ON, verify the door ajar indicator is not illuminated.

⇒	If the door ajar indicator is illuminated, test the control circuit terminal 44 for a short circuit to ground.

⇒	If the circuit tests normal, replace the IPC.

Connect a 10A fused jumper wire between the control circuit terminal 44 and ground. Verify the door ajar indicator is illuminated.

⇒	If the door ajar indicator is not illuminated, test the control circuit for an open/high resistance.

⇒	If the circuit tests normal, replace the IPC.

If all circuits test normal, test or replace the door jamb switch.

Repair Instructions