The instrument cluster uses information from other systems in order to deliver information to the driver. Before further diagnosis, review the general information on how the instrument panel cluster system operates, and how each system interacts with the instrument cluster. This will save diagnostic time, and prevent further misdiagnosis and unnecessary parts replacement.

Use a scan tool in order to diagnose the instrument cluster when referred to in diagnostic procedures. In addition to displaying diagnostic trouble codes (DTCs), the scan tool displays the input status and the data values used. The scan tool can also cycle many of the indicators ON and OFF and perform sweep tests of the gauges. These features may be selected using the scan tool.

Become very familiar with the instrument cluster capabilities and the diagnostic features. These self-diagnostic features are referenced in the DTC tables and are very useful in diagnosing non-DTC setting malfunctions. Notice that not all circuits feeding information to the instrument cluster will set a DTC if a fault exists within that circuit. Some of the circuits, such as the windshield washer solvent level switch input and the engine coolant level indicator module switch inputs, will not set a DTC. Diagnostic tables concerning these circuits are still included in this section in order to help locate concerns. Performing the instrument cluster diagnostic system check will help guide the technician to these tables in order to assist in diagnosis. Refer to Diagnostic System Check - Instrument Cluster .

Replace the instrument cluster only if the diagnostic procedures specifically direct you to do so. The instrument cluster does not automatically need to be replaced when a short is found in the wiring. Repair the wiring first, then inspect the instrument cluster for further concerns. The instrument cluster is a very reliable component and is not likely the cause of the malfunction. Most system complaints are linked to faulty wiring and connectors, and occasionally to a component. Understanding the instrument cluster system and using the diagnostic tables correctly will reduce diagnostic time and prevent unnecessary parts replacement.