For 1990-2009 cars only
Important: The following steps must be completed before using the symptom diagnostic tables.
- Before using the symptom diagnostic tables, perform the Vehicle Diagnostic System Check Diagnostic System Check - Vehicle in order to determine that there are no DTCs set, and that the control modules can communicate via the serial data link:
- Review the system operation in order to understand the system functions. Refer to the following description and operations:
Visual/Physical Inspection
| • | Inspect for aftermarket devices which can affect the operation of the instrument panel cluster or the audible warnings system. Refer to Checking Aftermarket Accessories . |
| • | Inspect the accessible system components or the visible system components for obvious damage or for obvious conditions which can cause the symptom. |
| • | Inspect for the proper fluid levels. |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
Gages and Odometer
Indicators
| • | Malfunction Indicator Lamp (MIL) Diagnosis for the 4.6L engine |
| • | Malfunction Indicator Lamp (MIL) Diagnosis for the 4.4L engine |
Driver Information Center
Driver Information Center (DIC) Switch Inoperative
Head Up Display (HUD)
Audible Warnings
