Raising the Vehicle

When a load is added to the vehicle, the vehicle body moves downward, the actuator arm rotates upward, and the "Compressor Signal" switch closes (located in the Electronic Level Control (ELC) height sensor). After a 17.27 second delay, the "Ground" switch closes, the ELC relay coil energizes and the relay contacts close. Battery voltage is now applied to the compressor motor and air is pumped into the rear struts. As the struts inflate, the vehicle body moves upward, the actuator arm rotates back to the level position (plus or minus 1 inch) causing the "Compressor Signal" and the "Ground" switches to open. The ELC relay de-energizes and air is no longer pumped into the rear struts.