Circuit/System Description
WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) supplies a voltage reference through the instrument panel (I/P) dimming voltage reference circuit to the interior lamp dimmer switch, which is part of the headlamp switch. When the dimmer switch is placed in a desired brightness position, reference voltage is applied through the dimmer switch rheostat and the I/P lamps dimmer switch signal circuit to the BCM. The BCM interprets this voltage signal, then applies a variable voltage through the LED backlight lamp control circuit illuminating the components listed below, if equipped:
- Clock
- Console flood lamp
- Diver information center (DIC) switch
- Driver window switch
- Headlamp switch
- Head up display (HUD) Switch
- Heated seat switches
- HVAC control head
- I/P switch assembly
- Radio
- Rear seat audio (RSA) control
- Rear video/HVAC control
- Steering wheel control switch