Suspension & Steering

PNEUMATIC (AIR) SUSPENSION SYSTEM

Diagnosis and Testing

Fig. 1: Example of height control switch- Legacy and Impreza

The air suspension system incorporates a function which will display any malfunctions in the system by illuminating and blinking the height indicator lamp. If there is any abnormal conditions in the system, the height indicator will begin to blink, and the system should then be put into the self-diagnostic mode to determine the problem.

Sedan, Coupe, Loyale, XT, Wagon and Brat

Fig. 2: Example of using the height indicator lamp to read the self-diagnostic codes

1. Turn the ignition switch OFF, and the height selector switch to ON (HIGH).
2. Turn the ignition switch ON, then turn the ignition switch OFF.
3. Set the height selector switch to the OFF (NORMAL) position.
4. Turn the ignition switch ON, then turn the ignition switch OFF.
5. Set the height selector switch to the ON (HIGH) position and turn the ignition switch ON. The system is now in the self-diagnostic mode.
6. Determine the system malfunction code by observing the number of blinks of the vehicle height sensor lamp.
7. Check and correct any malfunctions.
8. To clear the memory and reset the system, turn the ignition switch OFF and disconnect the negative battery cable for at least 10 seconds.

Legacy and Impreza

Fig. 3: Location and connection of air suspension diagnostic connector-Legacy and Impreza

1. Turn the ignition switch OFF.
2. Connect a jumper wire between terminal No. 1 and ground of the diagnostic connector under the driver side of the dash panel.
3. Turn the ignition switch ON.
4. The trouble codes will then be indicated by the blinking of the height indicator lamp.
5. Check and correct any system malfunctions.
6. To clear the memory and reset the system, turn the ignition switch OFF and disconnect the negative battery cable for at least 10 seconds.

END OF SECTION