Circuit/System Description
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
Voltage for the interior backlighting components is supplied from the CHMSL/DIMR Fuse in the instrument panel I/P electrical center to the body control module (BCM).
The BCM applies a voltage reference through the instrument panel (I/P) dimming voltage reference circuit to the interior lamp dimming switch, which is part of the headlamp switch. When the dimming switch is placed in the desired position, the dimmed voltage setting is applied from the interior lamp dimming switch through the I/P dimming return circuit to the BCM. The BCM then applies the dimmed voltage to the I/P lamps supply voltage circuit and they dim to the correct level.
The IP lamps are located in the following components:
- Cigar lighter
- Driver Information Center DIC switch
- Door lock switches
- Fog Lamp switch
- Headlamp switch (turn signal multifunction switch)
- Hazard switch
- HVAC Control
- Rear HVAC Control if equipped
- I/P cluster
- Power window switch
- Power mirror switches
- PRNDL
- Radio
- Rear Seat Audio if equipped
- Steering Wheel Controls
- Sunroof switch
- Sunshade switch
- TCS switch
- Universal garage door opener switch