The door ajar indicator system consists of the following components:

The driver door switch (DDS) and passenger door switch (PDS) receive a discrete input from the respective door ajar switch to indicate the status of the door. The DDS or PDS then communicates this status to the instrument panel cluster (IPC) via LAN message. The IPC, upon receipt of this LAN message, will illuminate the appropriate door ajar message in the driver information center (DIC) and also send a LAN message to the radio to activate the door ajar audible warning when the following conditions are met:

The body control module (BCM) receives a discrete inputs from both the left and right rear door ajar switches to indicate the status of the doors. The BCM then communicates this status to the instrument panel cluster (IPC) via LAN message. The IPC, upon receipt of this LAN message, will illuminate the appropriate door ajar message in the driver information center (DIC) and also send a LAN message to the radio to activate the door ajar audible warning when the following conditions are met:

The instrument panel cluster (IPC) illuminates the REAR ACCESS OPEN message when the body control module (BCM) detects that the liftgate or liftglass is ajar or open. The IPC receives a LAN message from the BCM requesting illumination. If the vehicle is in the forward or reverse gear position, the BCM activates an audible warning.