System Description

LIGHTING (EXT): AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM: SYSTEM DESCRIPTION

1. AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM

(a) General

* This system maintains the low beam headlights at a constant level while the vehicle is stopping.

* This system is controlled by the headlight leveling ECU assembly. The headlight leveling ECU assembly detects the vehicle posture via the rear height control sensor sub-assembly, and detects the vehicle speed via the combination meter assembly. The headlight leveling ECU assembly controls each headlight leveling motor based on these pieces of information in order to change the headlight reflector angle.

NOTICE:
* Initialize the rear height control sensor sub-assembly signal after the vehicle height changes due to replacement of suspension components or after operations such as reinstallation or replacement of the rear height control sensor sub-assembly.
* When the headlight leveling ECU assembly is replaced, initialization is also necessary.

(b) Function of Main Components