Automatic Level Control Sensor Description
WARNING: This page is about a different car, the 2002 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
The 2 position sensors that are utilized by the ALC system are mounted on the body, one sensor over each upper control arm of the rear suspension. Each rear position sensor has a link that is connected to corresponding rear suspension upper control arm.
The ESC module provides supply voltage of 8 volts and ground to the position sensors. The position sensors then supply an analog output voltage of 0.35 to 4.75 volts back to the ESC control module. The amount of voltage is dictated by the vertical height of the rear of the vehicle.