Air Bag Warning Indicator
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The air bag warning indicator is used to provide a status of the supplemental restraint system. The instrument cluster is hardwired to the RCM. If an air bag system concern is detected, a DTC is logged and the RCM provides a ground path to the instrument cluster turning on the air bag warning indicator.