Begin the system diagnosis with
Diagnostic Starting Point - Engine Controls
. The Diagnostic System Check-Engine Controls
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
codes' statuses |
The use of the Diagnostic System Check-Engine Controls will identify the
correct procedure for diagnosing the system and where the procedure is located.