Initial Inspection and Diagnostic Overview

Diagnostic Starting Point - Air Suspension
Begin the system diagnosis with the Diagnostic System Check - Vehicle. The Diagnostic System Check will provide the following information:
^ The identification of the control modules which command the system. Refer to Air Suspension Description and Operation.
^ The identification of any stored diagnostic trouble codes (DTCs) and their status. Refer to Diagnostic Trouble Code (DTC) Displaying. Displaying & Reading Trouble Codes

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.