Diagnostic System Check

DIAGNOSTIC SYSTEM CHECK - COMPUTERS AND CONTROL SYSTEMS

DESCRIPTION
The Diagnostic System Check is an organized approach to identifying a condition created by or affecting the electronic engine control system. The Diagnostic System Check must be the starting point for any driveability concern. The Diagnostic System Check directs the service technician to the next logical step in diagnosing the concern. Understanding the table and using the table correctly reduces diagnostic time and prevents the replacement of good parts.

TEST

Steps 1-2:

Steps 3-5:

Steps 6-8:

Steps 9-12: