Loading the Vehicle

As load is added to the vehicle, the vehicle body lowers, causing the Electronic Level Control (ELC) sensor arm to rotate upward. If the body lowers enough such that the sensor arm rotates above the "in-trim zone", the ELC sensor activates the internal timing circuit. If the vehicle maintains this condition for more than the minimum delay of 7-14 seconds, the ELC sensor completes a circuit to ground, which in turn completes the ELC relay circuit to ground. The ELC air compressor then supplies compressed air through the air dryer and air lines, to the air shocks.

As the air shocks inflate, the vehicle body raises, causing the ELC sensor arm to rotate downward. Once the ELC sensor arm reaches the "in-trim zone", the ELC sensor opens the ELC relay circuit, shutting off the ELC air compressor.

NOTE: Do not overload the vehicle as ELC air compressor failure could result from excessive run time.