Interior Lamps Dimming

The second group includes lamps which may be dimmed. This group may use a combination of Vacuum Fluorescent (VF) illumination and of incandescent lamps.
^ The Door switches and the window switches
^ The HVAC control head assembly
^ The Radio
^ The Instrument Panel Cluster (IPC)

When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) displays, which include the radio and HVAC control assembly, turn on at maximum brightness. When the park lamps are on, all incandescent back lighting turns on at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level.

Battery positive voltage is supplied to the IP dimmer switch from the headlamp switch or the DRL control Module when the park lamps are on. When the driver selects a dimming setting by moving, the IP dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the IP dimmer switch.