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.
The BCM detects a short to battery or open in the RAP relay control feed circuit when it is not trying to energize the RAP relay.
The condition above must be present for more than 0.3 seconds.