ID27 Air Leak Test (Suspension Down)

^ Depress STAR test button so that it remains in the down TEST position.

^ Reconnect air line to air compressor drier assembly and left rear air spring solenoid valve.

^ Reconnect vehicle wiring harness connector to left rear air spring.

^ Take a piece of masking tape and marks spot on wheel lip opening.

^ Measure and record vertical height between wheel lip opening and bottom of wheel rim.

^ Wait at least 15 minutes remeasure and record wheel lip opening again.

^ The second wheel lip opening is:

Approximately the same as the first -- GO to ID28.

Less than first -- GO to ID29.