Headlamps-DRL Circuit Description
The headlamp switch has an internal circuit breaker which opens the headlamp circuit if there is an overcurrent condition. When the circuit breaker's thermal element cools, the circuit breaker completes the headlamp circuit. If an overcurrent condition occurs while the headlamps are in use, the circuit breaker will rapidly cycle the headlamps on and off.
The headlamp dimmer switch is part of the multifunction switch on the steering column. By moving the multifunction switch along the axis of the steering column, the switch selects between high beam and low beam.
The Daytime Running Lamps (DRL) turn on if the headlamps are off and the ignition switch is in the START or RUN position.
Park, Tail, Marker, and License Lamps Circuit Description
With the headlamps switch in the park or headlamp position, current is provided to the rear marker and tail stop/turn signal lamps, license lamps, and front marker and park and turn signal lamps. All of these lamps are case grounded.
Stoplamps Circuit Description
The STOP/HAZ fuse provides current to the stoplamp switch. When the brake pedal is pressed, the stoplamp switch supplies current to the stoplamp relay. When the stoplamp relay is energized, current is supplied to the tail stop/turn signal lamps.
Turn Signal Lamps Circuit Description
Current is provided through the TURN-B/U fuse with the ignition switch in the RUN or START position. The turn/hazard lamp switch provides current which heats the timing element in the flasher. The timing element opens the circuit when it is hot and closes the circuit when it cools. The opening and closing of the circuit causes the lamps to flash.
Hazard Flasher Circuit Description
Current is provided at all times through the STOP/HZRD fuse. The turn/hazard lamp switch supplies current which heats the timing element in the flasher. The timing element opens the circuit when it is hot and closes the circuit when it cools. The opening and closing of the circuit causes the lamps to flash.
Backup Lights Circuit Description
When the ignition switch is in the RUN or START position, current is provided through the TURN-B/U fuse to the backup lamp switch. When the transmission is in reverse, voltage is available to the backup lamps, which are case grounded.
Interior Lamps Dimming Circuit Description
In the park or head position, the headlamps switch provides current to the IP lamps dimmer switch. With the contacts of the panel lamps switch closed, current is supplied to the ILLUM fuse. If the IP lamps dimmer switch is rotated toward the OFF position, current is reduced until the lamps do not illuminate.
