Headlamp Alignment Actuator - Description

DESCRIPTION





The headlamp leveling motor (1) is located on the rear lower surface of each front lamp unit on vehicles equipped with High Intensity Discharge (HID) headlamps and the automatic headlamp leveling system. The motor is encased within a molded plastic housing and is secured by an integral wedge-type mounting flange (3) to a keyed flange on the back of the front lamp unit housing. A rubber seal around the circumference of the mounting flange seals the motor to the lamp housing.

The outside of the motor housing features an integral molded connector receptacle (4) facing rearward on its lower surface, and a plastic pushrod with a ball formation (2) on its free end extends from the motor mounting flange. Within the motor housing is a 12-volt Direct Current (DC) servo motor, an electronic controller board that includes the motor logic circuits, and an integral screw-drive transmission. The headlamp leveling motor is connected to the vehicle electrical system through a dedicated take out and connector of the Front End Module (FEM) wire harness.

The headlamp leveling motor is serviced as a unit with the front lamp unit. The motor cannot be repaired and, if ineffective or damaged, the entire front lamp unit must be replaced.