Circuit/System Testing
WARNING: This page is about a different car, the 2007 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to Passenger Presence System Displaying Code Procedure . Verify DTC 1063 exists.
- Replace the PPS.