Diagnostic Starting Point - Engine Controls

Diagnostic Starting Point - Computers and Control Systems.

Begin the system diagnosis with Diagnostic System Check - Vehicle. The Diagnostic System Check 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 the code's statuses Initial Inspection and Diagnostic Overview

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