Manual Headlamp Leveling

Manual headlamp leveling is only available on vehicles with halogen headlamps and coil spring suspension.

The manual system comprises the following components:

• Two headlamp leveling motors
• Headlamp leveling rheostat rotary control.

When the ignition is in ignition mode 6, power is supplied to the lighting control switch via the ignition relay in the battery junction box and to the headlamp leveling motor in each headlamp assembly via the CJB. When the lighting control rotary switch is moved to the side lamp or headlamp position, the supply from the ignition relay is passed to the leveling rotary control.

Movement of the leveling rotary control produces a variable voltage output, which is sensed by the motors. The motors react to the supplied voltage and move the headlamp to the requested position which relates to the supplied voltage from the leveling rotary control.

The headlamps can only be lowered from their unladen position to compensate for changes in vehicle attitude due to loading.