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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-137 STEP 4. Check harness connector A-34X at MFI relay for YES : Repair harness wire between MFI relay connector A-34X (terminal No. 2) and mass airflow sensor NO : Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection . Then go to Step 10. STEP 5. Check harness connector B-10 at ECM for YES : Go to Step 6. Connector Inspection . Then go to Step 10. |