Circuit/System Testing

Door Ajar Indicator Always On

1. Ignition ON, close all doors.
2. Install a scan tool and observe the Door Ajar Switch parameters for both doors in the BCM data list. The scan tool should display Door Closed for both doors.
   • If the scan tool displays Door Closed for both Door Ajar Switch parameters, replace the IPC.
3. Disconnect the appropriate door latch assembly harness connector and observe the door ajar indicator. The door ajar indicator should turn off.
   • If the door ajar indicator remains illuminated, repair the appropriate door jamb switch signal circuit for a short to ground. If the circuit tests normal, replace the BCM.
4. If all circuits test normal, test or replace the appropriate door latch.

Door Ajar Indicator Inoperative

1. Ignition ON, open all doors.
2. Install a scan tool and observe the Door Ajar Switch parameters for both doors in the BCM data list. The scan tool should display Door Ajar for both doors.
   • If the scan tool displays Door Ajar for both Door Ajar Switch parameters, replace the IPC.
3. Ignition OFF, disconnect the appropriate door latch harness connector.
4. Install a 3-amp fused jumper between the door jamb switch signal circuit and ground at the door latch harness connector.
5. Ignition ON, observe the door ajar indicator. The door ajar indictor should illuminate.
   • If the door ajar indicator does not illuminate, repair the appropriate door jamb switch signal circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the BCM.
6. Ignition OFF, install a 3-amp fused jumper between the door jamb switch signal circuit and the door latch assembly ground circuit at the door latch harness connector.
7. Ignition ON, observe the door ajar indicator. The door ajar indictor should illuminate.
   • If the door ajar indicator does not illuminate, repair the appropriate door latch ground circuit for an open/high resistance.
8. If all circuits test normal, test or replace the appropriate door latch.