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. Start the engine.
3. With the scan tool, observe the Engine Speed parameter in the PCM Engine Data 1 list.

Does the Engine Speed parameter match the tachometer display?

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