Schematic Reference: Instrument Cluster Schematics

Did you perform the IPC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

Start the engine.

Does the tachometer operate normally?

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

Go to Step 3

1. Turn ON the ignition, with the engine OFF.
2. Install a scan tool.
3. With a scan tool, sweep the tachometer.

Does the tachometer move from low RPMs to high RPMs and back to low RPMs when you sweep this gage up and down?

Go to Diagnostic System Check - Engine Controls in Engine Controls-3.8L or Diagnostic System Check - Engine Controls in Engine Controls-5.7L

Go to Step 4

Important: Program the replacement IPC.

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 5

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3