Sunfire L4-144 2.4L DOHC VIN T SFI (2001)
Body Control Module: Description and Operation
Body Control System
The body control system consists of a BCM and it's associated controls. Battery positive voltage is provided to the BCM from CLSTR fuse in the Fuse
Block-left I/P. The module ground is wired to ground G201. The BCM utilizes inputs Ignition 1 and Accessory to differentiate the power mode that the
ignition switch has bean placed in. The BCM is wired to the Class 2 serial data communication bus as well as discreet input and output terminals to
control the functions of the vehicles body. The various BCM input and output circuits are described in the corresponding functional areas indicated on
the BCM electrical schematics. The Body Control Module functions include the following.
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A/C compressor request
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Remote Function Control
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A/C cooling Fan
^
Exterior and interior lighting control
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Daytime Running Lights (DRL)
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Automatic lighting control
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Fog lamps
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Interior lighting
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Battery rundown protection (Inadvertent Power)
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Chimes
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Key In Ignition
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Head Lamps On
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Seat Belt Not Fastened
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Turn Signal On
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Park Brake Warning
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Door Ajar Warning
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Check gauges
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Gauge control
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Instrument cluster indicator control
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Theft deterrent
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Engine coolant level sensing
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Key-in-ignition sensing
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Brake fluid level sensing
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Parking brake state sensing
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Rear compartment interface
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Horn interface
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Door lock interface
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Bulb Check
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ETS (Pontiac Only)
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A/T Shift lock control
