Dimmable Backlighting
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The lighting control module (LCM) generates a variable pulse width modulated (PWM) voltage which is distributed to the dimmable components when the headlamp switch is in the parking lamps or headlamps ON positions. Light intensity is adjusted by rotating the instrument panel dimmer switch. The dimmable backlighting components consist of:
- adjustable pedal switch
- audio unit
- electronic automatic temperature control (EATC) module (if equipped)
- manual climate control (if equipped)
- traction control switch (if equipped)
- floor shifter (if equipped)
- headlamp switch
- heated rear window switch
- message center switch
- overhead console
- steering wheel speed control switches
- steering wheel audio/climate control switches
The LCM communicates backlighting intensity signals on the standard corporate protocol (SCP) network to the instrument cluster.