Monte Carlo V6-3.4L VIN E (2000)
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Fog Lamp Switch input: This input provides the BCM with a request for fog lamps through a momentary switch connected to ground.
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Headlamp Switch Input: Determines when the Headlamp switch is closed to request the headlamps on.
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High Beam: Determines the status of the headlamp dimmer switch, so the BCM can send the instrument cluster a message, via Class 2, to turn on
the high beam indicator.
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Ignition 0 Signal: Determines when the ignition switch is in ACCESSORY, ON or START position.
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Ignition 1 Signal: Determines when the ignition switch is in the ON and START positions.
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Key In Ignition: Determines when the key is fully inserted in the ignition key cylinder.
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Key Unlock: Determines the status of the door lock cylinder switches for content theft.
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Lamp Request: This input requests the BCM to energize the Battery Rundown Protection relay after the car has been turned off and all the doors
have been closed, so the interior lights can be turned on.
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Park Brake Applied: Determines when the parking brake is applied.
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Park Lamp Switch Input: Determines when the park lamp switch (Headlamp Switch) is closed to request the park lamps on.
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Passlock Sensor Data: Reads the Passlock sensor security code.
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Rear Compartment Ajar: Determines if the rear decklid is open or closed.
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Rear Compartment Release: This input requests the BCM to open the rear compartment lid.
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RFA Link: Provides an interface allowing the transfer of keyless entry information from the Remote Control Door Lock Receiver (RCDLR).
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Serial Data: provides an interface with the PCM, EBCM, Radio, SDM, DIC and the IPC through the Class 2 serial data link.
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Surveillance Switch Input: Determines when the surveillance switch is closed to request the surveillance mode.
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Traction Control Request: This input provides the BCM with a request for Traction Control through a momentary switch connected to ground.
BCM Outputs
The BCM directly controls these outputs, plus other systems may request the BCM to control these outputs for certain functions:
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All Door Lock: This output supplies voltage to the door lock actuators when the doors are commanded to lock. This output also supplies ground
to all the door lock actuators when the doors are commanded to unlock.
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Backup Lamp Relay Control: Provides ground to the Backup LP relay control circuit.
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BTSI Solenoid Control: Provides ground to the Brake Transaxle Shift Interlock Control Solenoid.
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Door Unlock: This output supplies voltage to the door lock actuators (except the driver door lock actuator) when the doors are commanded to
unlock. This output also supplies ground to all the door lock actuators (except the driver door lock actuator) when the doors are commanded to
lock.
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Driver Door Unlock: This output supplies voltage to the driver door lock actuators when the doors are commanded to unlock. This output also
supplies ground to the driver door lock actuator when the doors are commanded to lock.
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DRL Relay Control: Provides ground to the DRL relay control circuit.
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DRL 5 V Reference: Provides 5 Volts to the ambient light sensor.
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Inadvertent Load Relay Control Output: Supplies ground to the battery rundown protection relay providing an inadvertent load (battery rundown)
protection.
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Fog Lamp Enable Control: Sends a ground signal to the fog lamp switch when the ignition switch on; this action enables the fog lamp switch. The
fog lamps turn on when the fog lamp switch is enabled by the BCM.
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Headlamp Relay Control: Provides ground to the Headlamp relay control circuit.
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Horn: Sends a ground signal to the horn relay, sounding the horn for the keyless entry alarm function or the content theft system.
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Inadvertent Relay Control: Provides ground to the Battery Rundown Protection relay control circuit.
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Interior Dimming: Controls the voltage to the interior lights dimming system.
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Load Management Control: Provides voltage to the Rear Defogger relay control circuit and the Heated Seats.
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Park Lamp Relay Control: Provides ground to the Park Lamp relay control circuit.
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Passlock Sensor Power: Provides B+ for Passlock sensor operation.
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Passlock Sensor Ground: Provides ground to the Passlock sensor.
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RAP Relay Control: Provides voltage to the RAP relay control feed circuit.
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Rear Compartment Lid Release Output: Provides ground to Rear Compartment Lid Release Actuator.
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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, EBCM, Radio, SDM, DIC and the IPC through the Class 2 serial data link.
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Theater Dimming 1 Control: Supplies ground to activate the Footwell lamps.
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Theater Dimming 2 Control: Supplies ground to activate the inside rear view mirror lamps, non SEO dome lamp, and the roof rail
courtesy/reading lamps.
Miscellaneous Functions
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BRAKE indicator lamp control: The 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 cluster via the Class 2 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. The BCM then communicates the information to the Instrument
Cluster and Powertrain Control Module (PCM) via the Class 2 serial data link.
Passlock Theft Deterrent
The Passlock is a vehicle theft deterrent system. The Passlock theft deterrent system contains a Passlock sensor. The Passlock sensor is part of the
ignition lock cylinder assembly. The Body Control Module (BCM) provides power and ground to the Passlock sensor. The Passlock sensor interfaces
with the BCM through the Passlock detection circuit.
