System Operation

When weight is added to the rear suspension, the body lowers moving the height sensor in the right shock down. After a 12 to 18 second delay, the control module grounds the operating coil in the compressor relay. With the relay energized, the compressor motor runs and air is added to the system. As the rear shock absorbers inflate, the body moves upward toward a correct height. When the body reaches this position, the control module opens the relay, shutting off the compressor motor.

When weight is removed from the rear suspension the body moves upward. The height sensor signals this move to the control module. After a time delay of 12 to 18 seconds, the control module grounds the coil in the exhaust solenoid which opens the vent valve. As air excapes from the system, the body lowers until the height sensor signals normal body height. The controller removes the ground from the exhaust solenoid and the vent valve closes.