HA21 Vent Right Front Spring

^ In order to determine if the air line or air compressor assembly is the problem the following actions are required:

^ Disconnect one of the air lines from air compressor drier assembly.

^ Release STAR test button so that it remains in the HOLD position after code 21 has been displayed for at least 5 seconds.

NOTE: This test step may result in a rapid drop in vehicle ride height.

^ Right front corner of the vehicle has vented down to a normal ride height:

Very slowly or none at all -- DEPRESS STAR test button down so that it remains in the TEST position. SERVICE restriction in airline for right front corner of vehicle. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes

At a fast or normal rate -- DEPRESS STAR test button down so that it remains in the TEST position. Then GO to HA22.