1. According to fluctuations of a suspension bracket, the sensors of automatic alignment installed in a forward and back part of the car send a signal to the control unit of automatic alignment (main thing).

2. At detection of a difference between two signals of sensors of automatic alignment the control unit of automatic alignment (main) checks car height, and then calculates the size of adjustment of an optical axis and sends a signal to the control unit of automatic alignment (additional).

3. The control unit of automatic alignment compares the actual and standard position of a reflector, and then brings a signal of management to the executive mechanism of alignment of a headlight.