BCM Inputs

The following components provide direct input to the BCM, plus other systems can use this input information in order to carry out certain functions:
^ Accessory Signal Input (ACCESSORY 1): Provides accessory power for the BCM.
^ Battery Power 2: Provides the BCM power for the door locks.
^ Battery Power 3: Provides the BCM power for the inadvertent power relay.
^ BCM Ground: Provides ground for BCM operation.
^ BCM Power: Provides voltage for BCM operation.
^ Courtesy Lights On Input (Courtesy Switch): Determines when the dome lamp switch (Headlamp Switch) is closed to request the dome lamp on.
^ Courtesy Ground: Provides ground to the courtesy lights.
^ Crank Signal: Determines when the ignition switch is in the start position.
^ Door Lock Switch: Door lock switch request to lock the vehicle doors.
^ Door Open: Provides door ajar status.
^ Door Unlock Switch: Door lock switch request to unlock the vehicle doors.
^ Driver Door Open: Allows certain chime functions when the driver's door is open.
^ Driver Seat Belt Unfastened Input (Seat Belt Status): Determines when the driver seat belt is unfastened.
^ DRL Signal Low: This input provides the BCM with Information through an ambient light sensor for the DRL feature.
^ Exterior Lamps off Input: Determines when the headlamp switch is in the OFF position.
^ Ground 2: Provides the BCM, internal door relays, with ground.
^ Headlamp Switch Input: Determines when the Headlamp relay is energized
^ Ignition 0: Determines when the ignition switch is in the OFF, RUN or START position.
^ Ignition 1: Determines when the ignition switch is in the RUN or START positions.
^ Key In Ignition: Determines when the key is fully inserted in the ignition key cylinder.
^ Left Turn Switch: Determines if the Left Turn Switch has been activated.
^ Park Brake Applied Switch Input: Determines when the parking brake is applied.
^ PASSLOCK Sensor Data Input: Provides the BCM with PASSLOCK information.
^ Performance Shift Switch Input: Determines if the Performance Shift Switch has been switched.
^ Rear Compartment Ajar (Trunk Ajar Switch): Determines if the rear decklid is open or closed.
^ RFA Link: Provides an interface allowing the transfer of keyless entry information from the Remote Control Door Lock Receiver (RCDLR).
^ Right Turn Switch: Determines if the Right Turn Switch has been activated.
^ Serial Data Class 2: Provides an interface with the PCM, EBCM, Heater A/C Control, SDM and the IPC through the Class 2 serial data link.
^ Theater Dimming 1 Ground: Provides ground for Theater Dimming 1 control.
^ Traction Control Request (TCS Switch): This input provides the BCM with a request for Traction Control through a momentary switch connected to ground.