Relay Control of Retained Accessory Power (RAP)
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
When the body control module (BCM) is in the RAP function as described above, it closes the RAP relay. This provides power during the RAP period for the following:
The BCM opens the RAP relay to end the RAP function when it ends the RAP function as outlined in the previous text.