For 1990-2009 cars

Important: For the Automatic Day-Night Mirror system, review the system operation in order to familiarize yourself with the system functions. Refer to Inside Rearview Mirror Description and Operation .

For the Rear Window Defogger and Inside Rearview Mirror (w/memory) systems, the following steps must be performed before using the symptom tables.

1. Perform Diagnostic System Check - Stationary Windows before using the symptom tables in order to verify that all of the following are true:

• | There are no DTCs set.

• | The control module(s) can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:

- | Rear Window Defogger Description and Operation

- | Inside Rearview Mirror Description and Operation

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the Stationary Window Systems. Refer to Checking Aftermarket Accessories in Wiring Systems.

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• | Rear Window Defogger Inoperative

• | Rear Window Defogger Inoperative

• | Rear Window Defogger Inoperative

• | Defogger Grid Lines Diagnosis

• | Automatic Day-Night Mirrors Inoperative

| Mirrors - Inside Mirror Memory Functions Inoperative