Did you perform the IPC diagnostic system check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

1. Disconnect engine control module (ECM) connector C2.
2. Turn ON the ignition, with the engine OFF.
3. Connect a 3 amp fused jumper between the ECM fuel cap control circuit at the ECM connector C2 and a good ground.

Is the FUEL CAP lamp illuminated?

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Go to Step 3

Go to Step 4

Inspect for poor connections at ECM connector C2 terminal 33. Refer to Intermittents and Poor Connections Diagnosis and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 5

Test the control circuit of the fuel cap indicator for an open. Refer to Testing for Short to Ground and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 6

Replace the ECM. Refer to Engine Control Module Replacement/Programming .

Did you complete the replacement?

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Go to Step 8

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Inspect for poor connections at the instrument cluster connector. Refer to Intermittents and Poor Connections Diagnosis and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 7

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

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Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2