ID28 Air Leak Check (Suspension Up)

^ Release STAR test button so that it remains in the up HOLD position after code 28 has been displayed for at least 5 seconds.

^ Inspect the following for air leakage:

- Air compressor/drier assembly connection point
- Drier assembly air line connection point
- Air line/air spring solenoid valve connection point

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

^ Was a leak path detected?

YES -- SERVICE as required. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes

NO -- INSTALL a new air suspension control module and then REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes