cadillac Workshop Repair Guides

Cadillac Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 7242 > < Technician Safety Information|Page 7239
Page 1
background image

Information Bus: Initial Inspection and Diagnostic Overview

Diagnostic Starting Point - Data Communications

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 are not communicating.
*  The identification of any stored diagnostic trouble codes (DTCs) and their status.  See: Testing and Inspection/Initial Inspection and Diagnostic

Overview/Diagnostic System Check - Vehicle

The use of the Diagnostic System Check - Vehicle will identify the correct procedures to begin vehicle diagnosis. These must be performed before
system DTC or symptom diagnosis.

Initial Inspection and Diagnostic Overview|Page 7242 > < Technician Safety Information|Page 7239