Circuit/System Verification
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, verify that the left and right front turn signals operate. If not refer to LINK.
- Ignition ON, observe the scan tool Ambient Light Status parameter while carefully supplying sufficient light to simulate daylight conditions to the ambient light sensor. The reading should be Day.
- Engine running in daylight conditions with the headlamp switch in the Auto position, the front turn signal lamps should illuminate as daytime running lamps.