For 1990-2009 cars

## Diagnostic Starting Point - Engine Controls Petrol

Begin the system diagnosis with 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 DTCs and the codes status.

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