Important: The following steps must be completed before using the symptom tables.

1. Perform Diagnostic System Check - Instrument Cluster or Diagnostic System Check - Driver Information Systems or Diagnostic System Check - Audible Warnings 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:

•	Instrument Cluster Description and Operation .

•	Indicator/Warning Message Description and Operation .

•	Driver Information Center (DIC) Description and Operation

•	Audible Warnings Description and Operation .

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

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

Gages and Odometer

Indicators

Message Center

Instrument Cluster Dimming

Driver Information Center (DIC)

Audible Warnings

Console