1. According to the fluctuation of the suspension, the auto leveling sensors installed in the front and rear of the vehicle send a signal to auto leveling control module (main).
2. When a difference between two of the signal inputted from the auto leveling sensors is detected, the auto leveling control module (main) verifies the vehicle attitude, then calculates the amount of optical axis adjustment and sends signal to the auto leveling control module (sub).
3. The auto leveling control module compares the actual and the required position of the reflector, then inputs a command signal to the headlight leveling actuator.
1. While driving with the headlights on, the auto leveling control module (main) receives an inputted vehicle speed signal from the ABS HU/CM or DSC HU/CM unit (referred to as ABS (DSC) HU/CM in this section) and a signal based on suspension fluctuation from the front and rear auto leveling sensors.
2. Based on the inputted vehicle speed signal, the auto leveling control module calculates acceleration angle and verifies the change in vehicle speed. Also, if there is a difference between two signal inputted from the front and rear auto leveling sensors, the auto leveling control module (main) unit verifies the actual attitude of the vehicle. The auto leveling control module (main) calculates the optical axis adjustment amount based on the condition of these two signal, and sends signal to the auto leveling control module (sub).
3. The auto leveling control module compares the actual and the required position of the reflector, then inputs command signal to the leveling actuator.
