Headlamp: Description and Operation

HEADLAMP LEVELING MOTOR - EXPORT
The Headlamp Leveling System allows the driver to adjust the headlamp beam pattern from the interior of the vehicle to compensate for passenger or cargo load. Only the vertical axis of the headlamp beam can be adjusted.

A headlamp leveling switch is located on the instrument panel and controls the headlamp leveling motors found on the headlamp unit. The headlamp leveling switch has four settings 0 - 3, 0 being the lowest, 3 being the highest headlight beam vertical setting.

When performing a headlamp beam pattern alignment on a vehicle equipped with headlamp leveling, be certain the headlamp leveling switch is in the "0" position before starting. Failure to do so will result in and incorrect headlamp unit alignment.

With the rotation of the headlamp leveling switch control knob, voltage is adjusted at the headlamp leveling switch (rheostat). This signals the headlamp leveling motors to adjust the vertical headlamp beam pattern accordingly Headlamps must be ON in order for the leveling system to function.

Fig. 22 Headlamp Leveling Switch:

HEADLAMP LEVELING SWITCH - EXPORT
This Headlamp Leveling Switch is located in the accessory switch bezel (Fig 22) located on the instrument panel. The switch is the primary controller of the headlamp leveling system. The leveling switch has four settings 0 - 3, 0 being the lowest, and 3 being the highest headlight beam vertical setting.

With the rotation of the headlamp leveling switch control knob, voltage is adjusted at the headlamp leveling switch (rheostat). This signals the headlamp leveling motors (headlamp unit mounted) to adjust the vertical headlamp beam pattern accordingly. Headlamps must be ON in order for the leveling system to function.