DeVille DHS V8-4.6L VIN Y (2000)
Heated Glass Element: Initial Inspection and Diagnostic Overview
Diagnostic Starting Point - Heated Glass Element
Begin the system diagnosis with the A Diagnostic System Check - Defogger or A Diagnostic System Check - Automatic Day-Night Mirror, depending on
which system you are working on. The Diagnostic System Check will provide the following information:
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The identification of the control module(s) which command the system.
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The ability of the control module(s) to communicate through the serial data circuit.
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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.