For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Instrument Cluster Schematics
1 | Did you perform the Instrument Cluster Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Instrument Cluster
2 |

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. With the scan tool, perform the Lamp and Gauge Check in the IPC Special Functions list.

Does the engine coolant temperature gage move up and down when commanded?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? | Go to Step 4 | --
4 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2