Important: The following steps must be completed before using the symptom diagnostic tables.
• | Inspect for aftermarket devices which can affect the operation of the instrument panel cluster (IPC) 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. |
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
• | Malfunction Indicator Lamp (MIL) Diagnosis for the 4.6L engine |
• | Malfunction Indicator Lamp (MIL) Diagnosis for the 4.4L engine |
Driver Information Center (DIC) Switch Malfunction
Head Up Display (HUD) Malfunction