7.3.1.7. Work at car movement

1. At movement with the included headlights the control unit of automatic alignment (main) receives on an entrance a signal of speed of the car from the block of ABS/TCS HU/CM or DSC HU/CM system and a signal based on fluctuations of a suspension bracket, from lobbies and back sensors of automatic alignment.

2. On the basis of a signal of speed of the car the control unit of automatic alignment calculates a corner of acceleration and checks change of speed of the car. Besides, if there is a difference between two signals of forward and back sensors of automatic alignment, the control unit of automatic alignment (main) checks actual position of the car. The same block calculates size of adjustment of an optical axis on the basis of these two signals and gives out a signal on the control unit of automatic alignment (additional).

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

NOTE When the ignition key is transferred to the situation ON, within several seconds it is possible to hear a sound of operation of the executive mechanism of alignment of headlights, it is normal as there is a check of an operational mode of system. At movement on the bad or rough road function of automatic alignment would cause effect of blinking, leading to dazzle of drivers of counter cars. For prevention of it automatic alignments of headlights occurs to delay.