Headlamp range adjustment control unit, task - GF82.10-P-2102-02SKX

Function requirements: 

• Circuit 15R ON
• Low beam ON (irrespective of the origin of the request, e.g., manual or daytime running lamps)

The automatic headlamp range adjustment system consists of:

• The headlamp range adjustment control unit (N71)
• The headlamp range adjustment rear axle sensor (A51)
• The headlamp range adjustment front axle sensor (A52)
• The left front lamp unit (E1) with the HRA power module (E1n3) and the left headlamp range adjustment motor (E1m1)
• The right front lamp unit (E2) with the HRA power module (E2n3) and the right headlamp range adjustment motor (E2m1)

The system automatically retains the light beam's inclination angle of the left front lamp unit (E1) and the right front lamp unit (E2) within the limits permitted by law. The headlamp range adjustment control unit (N71) reads in the headlamp range adjustment rear axle sensor (A51) and the headlamp range adjustment front axle sensor (A52) via a discrete line. In doing so, all vehicle level changes are sensed and regulated, irrespective whether they were caused by the load or through the rolling motion during acceleration or deceleration. The headlamp range adjustment control unit (N71) transmits the correction request to the HRA power modules (E1n3) and HRA power module (E2n3) via a discrete line. They actuate the following associated motors: left headlamp range adjustment motors (E1m1) and right headlamp range adjustment motor (E2m1).