Schematic Reference: Instrument Cluster Schematics

DEFINITION: This diagnostic procedure applies only to the serial data gages located in the instrument cluster which include the engine coolant temperature gage and volt gage, if equipped.

Did you perform the Diagnostic System Check - Vehicle?

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Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn the ignition ON, with the engine OFF.
2. Install a scan tool.
3. With the scan tool, perform the Displays Test.

Does the gage move from 0 to its maximum value and back to 0 when you perform the Displays Test?

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Go to Step 3

Go to Step 4

1. Install a scan tool.
2. Start the engine.
3. Observe the suspect gage parameter in the engine control module (ECM) Data list. Refer to Scan Tool Data List.

Does the parameter match the gage display?

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Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 4

Replace the instrument panel cluster (IPC). Refer to Control Module References for replacement, setup and programming.

Did you complete the replacement?

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Go to Step 5

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1. Use the scan tool in order to clear any induced DTCs.
2. Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2