Concord L6-258 4.2L VIN C 2-bbl (1982)
Suspension Control Module: Description and Operation
When weight is added to the rear suspension, lowering vehicle height, the height sensor sends a "low" signal to the Control Module (CM), activating
the internal time delay circuit. After a time delay of between 12 and 18 seconds, the CM grounds the compressor relay.
With the relay grounded, the compressor runs and air is sent through the system. As the shock absorbers inflate, the vehicle body moves toward a
corrected position. Once the correct position has been reached the CM halts compressor operation.
When weight is removed from the rear suspension raising the height of the vehicle, the height sensor sends a "high" signal to the Control Module
(CM). This activates the internal time delay circuit, and after a time delay of 12--18 seconds, the CM grounds the exhaust valve solenoid circuit, and
air is exhausted from the shock absorbers through the air dryer and exhaust solenoid, into the atmosphere.
As the shock absorbers deflate, the body moves downward to its original position. When the body reaches original height, the CM opens the exhaust
solenoid valve circuit.
