BCM input/output table

WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

BCM INPUT/OUTPUT CHART

Control	Input	Output
Power door lock system	Key cylinder switch Manual door lock switch	Driver side door lock actuator Other than driver side door lock actuator
Keyless entry system	Key reminder switch Keyless entry receiver Driver side door switch	Driver side door lock actuator Other than driver side door lock actuator Turn signal and hazard warning relay Interior light
Keyless start system (Door lock function) (if equipped)	Keyless start control module	Driver side door lock actuator Other than driver side door lock actuator Turn signal and hazard warning relay Interior light
Rear wiper	Rear wiper INT switch Rear wiper LO switch	Rear wiper relay
Panic alarm function	Panic alarm request signal	Headlight low relay Tail light relay Horn relay
Combination meter	Lighting switch Brake fluid level switch Seat belt reminder lamp signal Generator Oil presser switch Parking brake switch Dimmer switch (high beam) Door switch BCM DTC signal	Combination meter
Interior light	Each door switch Key reminder switch	Interior light Luggage room light
Warning buzzer	Key reminder switch Tail light switch Driver side door switch SDM (seat belt switch signal) (if equipped) ECM (vehicle speed signal) TCM (reverse signal) (if equipped) 4WD control module (if equipped) Keyless start control module (if equipped)	Warning buzzer (located in BCM)
DRL system (if equipped)	Lighting switch ECM (engine ON, OFF signal) Generator Parking brake switch	DRL indicator lamp control signal Headlight low beam
Auto-on headlight system (if equipped)	Lighting switch Parking brake switch Auto-on headlight sensor	Tail light relay Headlight low relay
Front fog light (if equipped)	Lighting switch Front fog light switch	Front fog light relay
Rear end door window defogger and door mirror heater	Rear end door window defogger switch (included in HVAC control module) Generator ECM (engine ON, OFF signal)	Rear end door defogger window relay Mirror heater relay (if equipped)
Illumination control (if equipped)	Lighting switch Illumination controller	Illumination control of combination meter Illumination control of information display, transfer switch and ESP® OFF switch Illumination control of HVAC control module, fog lamp switch, seat heater switch and A/T select lever
Door lock canceller	SDM (air bag deployment signal)	Driver side door lock actuator Other than driver side door lock actuator
Theft deterrent light	Key reminder switch	Theft deterrent light (located in HVAC control module)