Automatic Headlamp Adjustment, Brief Description

Automatic Headlamp Adjustment, Brief Description





Overview
^ Unit, light switch (10/684)
^ Tilt sensor, load, front (704F)
^ Tilt sensor, load, rear (704R)
^ Control module, AHL (664)
^ Body Control Module, BCM (707)
^ Motor, headlamp adjustment (280)
^ Brake light switch (29)
^ Engine Control Module (ECM)
^ Unit, ignition switch, ISM (20)
^ Column Integration Module, CIM (703)
^ Control module, TCS/ESP (382/671)
^ Main instrument unit, MIU (540)/ SID (541)

Description
The headlamp adjustment system ensures that the headlamps are always correctly angled on acceleration, braking and with different loads. When the front of the vehicle is raised during heavy acceleration, the headlamps are adjusted down and on heavy braking, when the vehicle front is lowered, the headlamps are adjusted up. Also when the car is heavily loaded the headlamps are adjusted to the correct angle. The footbrake and vehicle speed influence the reaction time of the adjustment system.

The adjustment system is fitted with two load angle sensors placed on the front and rear axles.