1

Was the Diagnostic System Check performed?

Go to Step 2

Go to Diagnostic System Check - Engine Controls

Ensure that all of the programmable read-only memory (PROM) pins are fully inserted in the socket.

Is the problem found?

Go to Step 3

Go to Step 4

1. Install the PROM correctly in the socket.
2. Clear any DTCs from the electronic control module (ECM).
3. Check for the presence of any DTCs.

Did DTC 051 reappear?

Go to Step 4

Go to Diagnostic System Check - Engine Controls

1. Replace the PROM.
2. Clear any DTCs from the ECM.
3. Check for the presence of any DTCs.

Did DTC 051 reappear?

Go to Step 5

Go to Diagnostic System Check - Engine Controls

1. Replace the ECM. Refer to Engine Control Module Replacement .
2. Clear any DTCs from the ECM.
3. Perform the Diagnostic System Check.

Is the repair complete?

System OK

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