9-7X V8-6.0L (2008)
Door/Trunk Ajar Indicator/Lamp: Description and Operation
Door Ajar Indicator Description and Operation
Door Ajar Indicator System Components
The door ajar indicator system consists of the following components.
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The driver door module (DDM)
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The passenger front door module (PDM)
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The body control module (BCM)
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The liftgate module (LGM)
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The instrument panel cluster (IPC)
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The driver information center (DIC)
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The driver door ajar switch
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The passenger door ajar switch
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The left rear door ajar switch
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The right rear door ajar switch
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The liftgate ajar switch
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The liftglass 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:
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The transmission is removed from PARK.
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The vehicle speed is greater than 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:
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The transmission is removed from PARK.
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The vehicle speed is greater than 8.05 km/h (5 mph).
Liftgate/Liftglass Ajar
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.
