Diagnostic Starting Point - Heated Glass Element

DIAGNOSTIC STARTING POINT - HEATED GLASS ELEMENT

For the inside rearview mirror with the automatic day-night feature or the rear window defogger (w/o CJ2), 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 - Heated Glass Element in order to identify the correct procedure for diagnosing the system and where the procedure is located. Symptom Related Diagnostic Procedures

For the rear window defogger, begin the diagnosis with the Diagnostic System Check - Defogger. The Diagnostic System Check will provide the following information:
- The identification of the control modules which command the system"
- The ability of the control modules 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.