Battery Rundown Protection/Inadvertent Power
WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The BCM has a feature called inadvertent load protection, which prevents battery rundown. The BCM de-energizes the courtesy lamps supply voltage circuit in 9-11 minutes after the ignition switch has been turned from the ACC or the RUN position to the LOCK or the OFF position when there is no BCM activity.
The BCM restores power to the courtesy lamps supply voltage circuit under the following conditions:
- Turning the ignition switch from the LOCK or the OFF position, to the ACC or the RUN position.
- Removing the key from the ignition lock cylinder.
- Opening any vehicle door.
- Turning the dimmer switch to the DOME position.
- Activating any of the roof rail reading lights.
- The BCM receives a message from the Remote Control Door Lock Receiver, BCM type 3 or 4 only.
- Locking a door using the key, BCM type 4 only.
The inadvertent battery power rundown protection feature is mileage-sensitive. Vehicles with less than 15 (24 km) total accumulated miles (km) have a 2 minute and 32 second - 3 minute and 18 second time-out instead of a 10 minute time-out.