Subaru Coupes/Sedans/Wagons 1985-1996 Repair Guide

System Components


See Figures 1 and 2

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Fig. Fig. 1: Pneumatic suspension system components-4WD Sedan, Coupe, Loyale, XT, Wagon and Brat

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Fig. Fig. 2: Pneumatic suspension system components-4WD Legacy and Impreza

The air suspension system uses a selector switch which changes the height to NORMAL or HIGH. A warning light indicates the vehicle height, and also illuminates in the event of system malfunction or failure.

There are vehicle height sensor built into each air suspension spring which detect proper vehicle height at each wheel.

The system include six solenoid valves and a control unit which open and close the valves in order. The control unit measures signals from each height adjuster, and signals one or more of the valves accordingly.

Finally, an air tank and compressor are installed and are operated by a pressure switch. Because the air compressor can create condensation through its normal functioning, a drier is installed to dry the air from the air lines running to each shock assembly.