Asleep & Awake Functions
WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
Wake up signals turn BCM on to begin controlling and/or monitoring of certain functions. BCM wake-up inputs are as follows:
- Door ajar switches.
- Dome light.
- Parking lights.
- Power door lock switches.
- Interior light request active.
- Ignition key put into ignition lock cylinder.
- Ignition key is removed from ignition lock cylinder.
- Ignition switch in ON position.
- Remote control request to BCM from Remote Function Actuator (RFA).
- Any class 2 communication requiring BCM interaction.
The BCM will fall asleep when controlling of functions and class 2 communication has stopped. After ignition switch is turned to LOCK position and 20 minutes has elapsed without any wake-up signals, the BCM goes into low-power sleep mode. When wake-up inputs are detected, BCM will enter high-power awake mode.