Dimmable Backlighting

When the parking lamps are on, the smart junction box (SJB) monitors the input from the instrument panel dimmer switch. The SJB sends a pulse-width modulated (PWM) voltage to the dimmable components and switches based on input received from the instrument panel dimmer switch.

The SJB also sends a message over the network to the audio control module (ACM), the rear entertainment module (RETM), the heating ventilation air conditioning (HVAC) module, and the instrument cluster (IC) to indicate the backlighting intensity level.