Century V6-3100 3.1L VIN M SFI (1998)
Body Control Module: Component Tests and General Diagnostics
Miscellaneous Functions
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BRAKE indicator lamp control: The Body Control Module (BCM) controls the state of the BRAKE indicator lamp based on the status of the
parking brake switch by sending a message to the Instrument Panel Cluster (IPC) via the Class II serial data link.
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Door/trunk ajar indicator lamp control: The BCM controls the state of the Door/Trunk Ajar indicator lamp based on the status of the door and rear
compartment lid input switches by sending a message to the IPC via the Class II serial data link.
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Fog lamp enable control. The BCM controls fog lamp operation, based on the status of the ignition switch.
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Day/night mode sensing: The BCM determines the ambient light operating mode from the Daytime Running Lamp (DRL) control module. Then, it
communicates this information to the IPC and Powertrain Control Module (PCM) via the Class II serial data link.
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Twilight sentinel control: The BCM turns on the headlamps at night for 90 seconds when the ignition switch is turned from RUN to LOCK or OFF
while the headlamps switch is in the off position, and the headlamps are on due to night mode of the auto headlamp control.
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Transaxle shift select function. The BCM communicates the status of the transaxle shift select switch to the Powertrain Control Module (PCM)
and the Instrument Panel Cluster (IPC) via the class II serial data link.
