Doors: Description and Operation

DOOR AJAR INDICATOR SYSTEM COMPONENTS
The door ajar indicator system consists of the following components.
^ The driver door module (DDM)
^ The passenger front door module (PDM)
^ The body control module (BCM)
^ The instrument panel cluster (IPC)
^ The driver information center (DIC)
^ The driver door ajar switch
^ The passenger door ajar switch
^ The left rear door ajar switch
^ The right rear door ajar switch

DRIVER DOOR AJAR AND PASSENGER DOOR AJAR
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 transmission is removed from PARK
^ The vehicle speed is greater then 8.05 km/h (5 mph)

LEFT REAR DOOR AJAR AND RIGHT REAR DOOR AJAR
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 transmission is removed from PARK
^ The vehicle speed is greater then 8.05 km/h (5 mph)