Diagnostic Starting Point - Doors

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

For the Outside Automatic Day-Night Mirror system, begin the diagnosis by reviewing the system Description and Operation. Reviewing the Description and Operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Doors in order to identify the correct procedure for diagnosing the system and where the procedure is located.

For the other Door systems, begin the system diagnosis with the Diagnostic System Check - Door Systems . 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.