For 1990-2009 cars

### Door Ajar Indicator System Components

The door ajar indicator system consists of the following components:

• | The body control module (BCM)

• | The instrument panel cluster (IPC)

• | The driver information center (DIC)

• | The driver door jamb switch

• | The passenger door jamb switch

• | The left rear door jamb switch

• | The right rear door jamb switch

• | The liftgate actuator/ajar switch

### Driver and Passenger Door Ajar Operation

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 message to the radio to activate the door ajar audible warning when the following conditions are met:

• | The transmission is removed from PARK.

• | The vehicle speed is greater then 8.05 km/h (5 mph).