Operation

OPERATION

The headlamp leveling switch receives battery voltage on a fused park lamp relay output circuit whenever the park lamp relay is energized (the park lamps are turned ON). The switch receives a path to ground at all times through the instrument panel wire harness. The only output from the switch is a voltage signal that it provides to the headlamp leveling motors on a headlamp adjust signal circuit. Each switch position selects a different tap on a series resistor within the switch to provide a different voltage signal to the leveling motors. The higher the switch position number, the higher the output voltage level.

The headlamp leveling switch as well as the hard wired inputs and outputs of the switch may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information.