For 1990-2009 cars

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

• | The identification of the control module or modules which command the system.

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

• | The identification of any stored DTCs and the status of the codes.

Use the Diagnostic System Check - Vehicle in order to identify the correct procedure for diagnosing the system and where the procedure is located.