Ride Height Sensor: Description and Operation

Two height sensors are mounted on the vehicle. The sensors send a voltage signal to the control module. The output ranges from approximately 4.75 volts at minimum height (when the vehicle is low or in full jounce), to 0.25 volts at maximum height (when the vehicle is high or in full rebound). The sensors have useable range of 80 millimeters (3 inches) compared to total suspension travel of 200-250 millimeters (8 to 10 inches) at the wheel. Therefore, the sensors are mounted inside the wheels at a point where full suspension travel at the wheel is relative to 80 millimeters of travel at the height sensor. The top mount of the front height sensor is mounted to a fixed position on the frame near the front suspension. The lower mount is connected to the lower control arm. The rear height sensor is mounted on a "scissor" bracket between the spare tire and the right-hand shock. The top mount connects directly to a frame crossmember and the bottom mount bolts to the differential housing. The height sensors are not repairable. A faulty sensor must be replaced as a unit.