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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-371 DIAGNOSIS STEP 1. Check harness connector B-06 at the knock YES : Go to Step 2. Connector Inspection . Then go to Step 3. STEP 2. Check for short circuit to power supply between Then go to Step 5. YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with NO : Repair it. Then go to Step 3. STEP 3. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Pattern 23 (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. |