Circuit/System Verification
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.
Ignition ON, observe the scan tool rear fog lamp switch parameter while pressing and releasing the rear fog lamp switch. The reading should toggle between ACTIVE and INACTIVE.
- If the reading does not change between the commanded states, refer to Rear Fog Lamp Switch Malfunction .