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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-513 STEP 2. Check the trouble symptoms. Diagnostic Function − OBD-II Drive Cycle − Pattern 23 (2) Check the diagnostic trouble code (DTC). YES : Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, ID Code or GROUP 42C, ID Code Registration Judgment Table <Vehicles with WCM> go to Step 3. NO : It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Cope with Intermittent Malfunctions . 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. DTC P0500: Vehicle Speed Signal Malfunction . TECHNICAL DESCRIPTION • The ECM receives the vehicle speed signal from the ASC-ECU by the CAN bus line. . DESCRIPTIONS OF MONITOR METHODS When the signal not available as the vehicle speed . 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) • Mass airflow sensor . |