Did you perform the On-Board Diagnostic (OBD) System Check?

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Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

1. Check for faulty ECM grounds.
2. If you find a problem, repair as necessary. Refer to Wiring Repairs in Wiring Systems.

Did you find a problem?

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Go to Step 5

Go to Step 3

1. Check for an improperly latched PROM.
2. If you find a problem, repair as necessary.

Did you find a problem?

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Go to Step 5

Go to Step 4

Replace the ECM. Refer to Engine Control Module Replacement .

Is the action complete?

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Go to Step 5

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1. Clear the DTCs. Refer to Clearing DTCs.
2. Start the engine and allow the engine to idle at the normal operating temperature.
3. Operate the vehicle within the conditions for setting this DTC as specified in the supporting text.

Did the DTC reset?

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Go to Step 2

Go to Step 6

Are any DTCs stored which you have not diagnosed?

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Go to the applicable DTC Table

System OK