pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 13725 > < Diagram Information and Instructions|Page 13722
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Horn: Initial Inspection and Diagnostic Overview

Diagnostic Starting Point - Horns

Begin the system diagnosis with Diagnostic System Check - Vehicle  (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic
System Check - Vehicle) . The Vehicle Diagnostic System Check will provide the following information:

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The identification of the control modules which command the system

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The ability of the control modules to communicate through the serial data circuit

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The identification of any stored DTCs and their status

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

Initial Inspection and Diagnostic Overview|Page 13725 > < Diagram Information and Instructions|Page 13722