The door ajar indicator system consists of the following components.

The DDM and PDM receive a discrete input from the respective door ajar switch to indicate the status of the door. The DDM or PDM then communicates this status to the IPC via class 2 message. The IPC, upon receipt of this class 2 message, will illuminate the appropriate door ajar message in the 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 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 IPC via class 2 message. The IPC, upon receipt of this class 2 message, will illuminate the appropriate door ajar message in the 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 REAR ACCESS OPEN message displays and Gate Ajar indicator comes on if the liftgate or liftglass is open while the ignition is in RUN. The IPC receives a class 2 message from the liftgate module (LGM) requesting illumination. The LGM receives discrete inputs from 2 ajar switches to indicate the status of the liftgate. The liftgate and liftglass ajar switches are normally open when the liftgate and liftglass are closed. When the liftgate or liftglass is opened, the ajar switch contacts close providing a path to ground.