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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-417 STEP 4. Check the trouble symptoms. Diagnostic Function − OBD-II Drive Cycle − Pattern 15 (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 or GROUP 42C, Diagnosis − ID Codes Registration Judgment Table <Vehicles with NO : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use − How to Cope with Intermittent Malfunctions . STEP 5. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Pattern 15 (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. DTC P0303: Cylinder 3 Misfire Detected . TECHNICAL DESCRIPTION • If a misfire occurs while the engine is running, the engine speed changes for an instant. • The ECM checks for such changes in engine speed. . DESCRIPTIONS OF MONITOR METHODS Monitor angular acceleration of crankshaft and . MONITOR EXECUTION Continuous . MONITOR EXECUTION CONDITIONS Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Not applicable Sensor (The sensor below is determined to be normal) • Camshaft position sensor • Mass airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor • Throttle position sensor . |