Initial Inspection and Diagnostic Overview

Diagnostic Starting Point - Engine Cooling
Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. 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 their status.

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