Schematic Reference: Instrument Cluster Schematics

Connector End View Reference: Displays and Gages Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Install a scan tool.
2. Start the engine.
3. With the scan tool, observe the Engine Speed parameter in the IPC Data 1 data list.

Does the Engine Speed parameter match the tachometer display?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Test the engine speed signal circuit for a high resistance between the instrument panel cluster (IPC) and powertrain control module (PCM). Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 4

Inspect for poor connections at the harness connector of the instrument cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 5

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2