Door Ajar Indicator Malfunction

Door Ajar Indicator Malfunction

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview






Circuit/System Description

The body control module (BCM) receives a discrete input from the respective jamb switch to indicate the status of the door. The BCM then communicates this status to the instrument panel cluster (IPC) via a class 2 message. The IPC, upon receipt of this class 2 message, will illuminate the appropriate ajar message in the driver information center (DIC) and also send a class 2 massage to the radio to activate the door ajar audible warming when the transmission is removed from PARK and the vehicle speed is greater then 8.05 km/h (5 mph).

Diagnostic Aids

The door ajar switches supply a ground to the BCM when the door is open. Once the door is closed the door ajar switch opens canceling the ground to the BCM. The BCM sends a signal to the IPC to turn on the door ajar light when a door is open.

Circuit/System Verification

Ignition ON, observe the Scan Tool Door Ajar Switch parameter while opening and closing all of the doors. The reading should change between low and high.

Circuit/System Testing

1. Ignition OFF, while observing the door ajar indicators and the dome lamps, open and close each door. The door ajar indicator and the dome lamp should turn on with each door that opens.

• If the dome lamps operate properly and the door ajar indicator does not illuminate, replace the IPC.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Front Side Door Latch Replacement
* Rear Door Latch Replacement
* Refer to Programming and Relearning for IPC and BCM setup and programming. Programming and Relearning