Circuit/System Description
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The retained accessory power (RAP) system allows specific vehicle functions to operate after the ignition is turned OFF for a predetermined time. The RAP function is directly controlled by the BCM through the ignition I/II voltage circuit. RAP is controlled by the BCM using inputs from the door ajar switches to determine control of the ignition I/II voltage circuit when the ignition is turned OFF. Radio RAP is controlled by a serial data message from the BCM using inputs from the driver door open switch. The ignition I/II voltage circuit from the BCM feeds the following:
- Automatic transmission shift lever
- Sunroof shade module (with RPO C3U)
- Sunroof control module (with RPO C3U)
- Inside rearview mirror (with RPO DD7/DD8)
- Auxiliary power outlet - 115V AC (with RPO KVI)
- Driver window switch (without RPO AXC/AXE)
- Passenger window switch (without RPO AXC/AXE)