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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-221 DIAGNOSIS STEP 1. Check the cooling system. P.14-4 . Q: Is the cooling system normal? YES : Go to Step 2. STEP 2. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Pattern 10 (2) Check the diagnostic trouble code (DTC). YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, Diagnosis with KOS> P.42B-15 or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with P.42C-10 . NO : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use P.00-15 . |