Spirit L6-258 4.2L VIN C 2-bbl (1982)
Ride Height Sensor: Description and Operation
Fig. 4 Electronic height sensor
The electronic height sensor controls two basic circuits: the compressor relay ground circuit and the exhaust solenoid coil ground circuit. To prevent
falsely activating the compressor relay or exhaust solenoid during normal ride motions, the sensor circuitry provides a delay before either circuit can
be completed. The length of this delay is 7 - 15 seconds on all models. Also, the sensor electronically limits the compressor run time or solenoid
exhaust valve energized time to a predetermined length of time to prevent extended operation if a system malfunction should occur. The run time is
limited to between 2 and 7 minutes depending on model. The electronic height sensor is mounted to the frame crossmember in the rear and is
connected to the axle housing or upper control arm by a short link.
