Firebird V8-350 5.7L VIN P SFI (1996)
Body Control Module: Description and Operation
Wake-Up/Asleep States
"Wake-ups" are signals that will turn the BCM "ON" and cause it to begin active control and/or monitoring. The BCM is "asleep" when it has stopped
control or monitoring and has become idle again. The signals that will cause the BCM to wake-up are as follows:
^ Courtesy Lamp System
^ Remote Keyless Entry System
^ Ignition "ON" (IGN 1)
^ Park Lamps
^ Headlamps
^ Door Jamb Switches
^ Rear Compartment Lid Ajar Indicator Switch
^ Key In Ignition Switch
^ Shock Sensor
After the BCM is awake and the wake-up input is removed (i.e., a door is opened, then closed) the BCM will "go to sleep" again in 10 minutes.
If the BCM sees a door ajar wake-up, and that wake-up remains active (i.e., the door remains open with ignition "OFF") for 10 minutes, the BCM will
turn courtesy lamps "OFF," if they were "ON." This is done to prevent battery drain if a door is inadvertently left open for an extended period of time.
