GM Service Manual Online
For 1990-2009 cars only

Door Ajar Indicator Description and Operation w/AN3

Door Ajar Indicator System Components

The door ajar indicator system consists of the following components:

    • The driver door switch (DDS)
    • The passenger door switch (PDS)
    • The body control module (BCM)
    • The instrument panel cluster (IPC)
    • 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 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 GMLAN message. The IPC, upon receipt of this GMLAN message, will illuminate the appropriate door ajar message in the driver information center (DIC) and also send a GMLAN 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 body control module (BCM) receives a discrete inputs from both the left and right rear door ajar switches to indicate the status of the rear doors. The BCM then communicates this status to the instrument panel cluster (IPC) via GMLAN message. The IPC, upon receipt of this GMLAN message, will illuminate the appropriate door ajar message in the driver information center (DIC) and also send a GMLAN 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)

Door Ajar Indicator Description and Operation w/o AN3

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 door ajar switch
    • The passenger door ajar switch
    • The left rear door ajar switch
    • The right rear door ajar switch

The body control module (BCM) receives a discrete inputs from the front and rear door ajar switches to indicate the status of the doors. The BCM then communicates this status to the instrument panel cluster (IPC) via GMLAN message. The IPC, upon receipt of this GMLAN message, will illuminate the appropriate door ajar message in the driver information center (DIC) and also send a GMLAN 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)