buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 7156 > < Diagram Information and Instructions|Page 7153
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Navigation System: Initial Inspection and Diagnostic Overview

DIAGNOSTIC STARTING POINT

Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check will provide the
following information:

-

The identification of the control module(s) which command the system.

-

The ability of the control module(s) 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.See: Testing
and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System Check - Vehicle

Initial Inspection and Diagnostic Overview|Page 7156 > < Diagram Information and Instructions|Page 7153