Circuit/System Verification

WARNING: This page is about a different car, the 2007 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, observe the scan tool Dimming Control Reference voltage as the dimmer switch is activated from LOW to HIGH intensity. The reading should change as the switch is activated.
- If the reading does not change as the switch is activated, see below I/P Dimming Voltage Reference Malfunction.
- If the reading changes as the switch is activated, see below I/P Lamps Dimmer Switch Signal Malfunction.