A Preliminary Information

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

1. Perform Diagnostic System Check - Instrument Cluster or Diagnostic System Check - Driver In formation Systems before using the Symptom Tables in order to verity that all of the following are true: Diagnostic System Check - Instrument Panel Cluster Diagnostic System Check - Driver Information Systems
^ 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 Panel Cluster (IPC) Description and Operation.
^ Indicator/Warning Message Description and Operation.
^ Driver Information Center (DIC) Description and Operation
^ Audible Warnings Description and Operation.

Visual/physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Instrument Cluster or Audible Warning Systems. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ Inspect for proper fluid level.

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

Symptom List
Refer to a symptom diagnostic procedure.