LaCrosse FWD L4-2.4L (2011)
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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Body control module (BCM)
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Instrument cluster
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Driver information center
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Driver door latch
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Passenger door latch
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Left rear door latch
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Right rear door latch
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Driver window switch
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Passenger window switch
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Left rear window switch
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Right rear window switch
Driver Door Ajar
The driver window switch receives a discrete input from the driver door ajar switch within the driver door latch to indicate the status of the door. The
window switch then communicates this status to the instrument cluster via GMLAN message. The instrument panel cluster, upon receipt of this GMLAN
message, will illuminate the appropriate door ajar message in the driver information center and also send a GMLAN message to the radio to activate the
door ajar audible warning when the vehicle speed is greater then 8 km/h (5 MPH).
Passenger Door Ajar
The passenger window switch receives a discrete input from the passenger door ajar switch within the passenger door latch to indicate the status of the
door. The window switch then communicates this status to the instrument cluster via GMLAN message. The instrument panel cluster, upon receipt of this
GMLAN message, will illuminate the appropriate door ajar message in the driver information center and also send a GMLAN message to the radio to
activate the door ajar audible warning when the vehicle speed is greater then 8 km/h (5 MPH).
Left Rear Door Ajar And Right Rear Door Ajar
The body control module (BCM) receive discrete inputs from both the rear door latches and the rear compartment lid latch to indicate the status of the
doors and rear compartment lid. The BCM or window switches then communicate this status to the instrument cluster via GMLAN message. The
instrument panel cluster, upon receipt of this GMLAN message, will illuminate the appropriate door ajar message in the driver information center and
also send a GMLAN message to the radio to activate the door ajar audible warning when the vehicle speed is greater then 8 km/h (5 MPH)
