Diagnostic Aids

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

The hazard warning switch has the two backlighting circuits listed below.

Circuit 6817 is controlled by the backlight dimming control output from the BCM. This circuit controls LED backlight dimming to multiple components based on the Dimmer Switch position.
Circuit 111 controlled by the hazard LED indicator output from the BCM. This circuit controls the hazard switch LED indicator anytime the hazard lamps are requested on.