Century V6-3100 3.1L VIN M SFI (1998)
Body Control Module: Description and Operation
BCM Outputs
The Body Control Module (BCM) directly controls these outputs, plus other systems may request the BCM to control these outputs for certain functions
(refer to schematics for BCM connector/terminal location):
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All Door Lock: When active, supplies voltage to the door lock actuators and locks the doors; when inactive, provides ground to the door lock
actuators.
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Courtesy Lamps: Supplies voltage to the courtesy lights, providing an inadvertent load (battery rundown) protection.
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Driver Door Unlock: Supplies ground to the door lock relay, which provides power to the driver door actuator, and unlocks the driver's door lock.
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DRL Link: Provides an interface to the DRL control module allowing the BCM to determine the current ambient light operating mode, and to
activate the vehicle headlamps for alarm and twilight sentinel features.
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Fog Lamp Control: Sends a ground signal to the fog lamp enable relay coil when the ignition switch is in the RUN position; this action enables the
fog lamp relay. The fog lamps turn on when the fog lamp switch is on and the fog lamp relay is enabled by the BCM.
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Horn: Sends a ground signal to the horn relay. sounding the horn.
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Ignition Reference Low: Provides a ground to the ignition key cylinder for the PASS-Key(R) II resistor pellet.
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Passenger Door Unlock: When active, supplies voltage to the door lock actuators and unlocks the doors (except the driver's door); when inactive,
provides ground to the door lock actuators.
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RAP Relay Drive: Provides ground to energize the RAP relay.
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RFA Link: Provides an interface allowing the transfer of keyless entry information to the Remote Control Door Lock Receiver (RCDLR).
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Serial Data: provides an interface with the PCM. EBTCM, and the IPC through the Class II serial data link.
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Theatre Dimming 1: Supplies ground to activate the IP and door courtesy lamps.
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Theatre Dimming 2: Supplies ground to activate the dome and the roof rail courtesy/reading lamps.
