Schematic Reference: Instrument Cluster Schematics

Did you perform the IPC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

1. Start the engine.
2. Verify the check eng oil level indicator in the message center is always on.

Does the system operate normally?

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

Go to Step 3

1. Install scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool select PCM IPC data list.

Does the engine oil level message data value indicate OK?

Go to Step 7

Go to Step 4

1. Turn OFF the ignition.
2. Disconnect the PCM connector C2.
3. Turn ON the ignition, with the engine OFF.
4. Using a test lamp probe the signal circuit of the engine oil level indicator switch to B+. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

Go to Step 8

Go to Step 5

1. Disconnect the engine oil level indicator switch connector.
2. Test the engine oil level indicator signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 6

Test the engine oil level indicator ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

Important: Perform the set up procedure for the replacement IPC.

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 10

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Important: Perform the programming procedure for the replacement PCM.

Replace the PCM. Refer to Powertrain Control Module Replacement in Engine Controls-3.4L.

Did you complete the replacement?

Go to Step 10

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Replace the engine oil level indicator switch. Refer to Engine Oil Level Sensor Replacement .

Did you complete the replacement?

Go to Step 10

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3