HD20 Inflate Left Rear Air Spring

^ From the previous test, HD19, it has been determined that the cause of the venting problem is due to a restriction in the air line or compressor assembly. In order to isolate the cause of this problem the following actions are required:

^ Reconnect air line to left rear solenoid valve.

^ inflate left rear corner of vehicle so that vehicle ride height is above normal position. Then release STAR test button so that it remains in the up HOLD position after code 28 has been displayed for at least 5 seconds.

NOTE: As long as STAR test button remains in the up HOLD position the left rear air spring will continue to be inflated. When the desired amount of inflating has occurred depress STAR test button so that it remains in the down TEST position.

^ Has vehicle's left rear air spring been inflated so that left rear corner of vehicle has approximately a 2 inch gap between fender lip opening and top of tire?

YES -- DEPRESS STAR test button down so that it remains in the TEST position. Then GO to HD21.

NO -- CONTINUE with Step HD20 until left rear corner of vehicle is at desired position.