For 1990-2009 cars

Begin the system diagnosis with the Diagnostic System Check - Vehicle. The Diagnostic System Check - Vehicle will provide the following information:

• | The identification of the control modules which command the system

• | The ability of the control modules to communicate through the serial data circuit

• | The identification of any stored diagnostic trouble codes (DTCs) and their status

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