Circuit/System Description

Each headlamp assembly contains a headlamp leveling motor that is controlled by the headlamp control module. The front and rear suspension height sensors provide the headlamp control module with suspension height information. Each sensor receives a 5 V reference, signal, and low reference circuits from the headlamp control module. The sensors are connected to the control arms of the front and rear suspension. As the vehicle travels, the suspension compresses and rebounds moving the suspension height sensor arms. This causes the signal output of the sensor to change. The headlamp control module compares the information from both suspension height sensors and adjusts the headlamp leveling as needed.