Important: Review the automatic day-night mirror system
description and operation in order to familiarize yourself with the system functions.
Refer to
Automatic Day-Night Mirror Description and Operation
.
The following steps must be completed before using the symptom
tables.
- Perform the
Diagnostic System Check - Vehicle
in Vehicle DTC Information before using the symptom tables in order to
verify that all of the following are true:
• | The control module(s) can communicate via the serial data link. |
- Review the rear window defogger system description and operation in order
to familiarize yourself with the system functions. Refer to
Rear Window Defogger Description and Operation
.
Visual/Physical Inspection
• | Inspect for aftermarket devices which could affect the operation of the
rear window defogger or the automatic day-night feature of the inside rearview mirror.
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: