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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-455 STEP 11. Check the following items. defective component. a. Check for skipped timing belt teeth. c. EGR valve failed. Q: Are there any abnormalities? YES : Go to Step 12. STEP 12. Replace the injector. Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor (3) Check the diagnostic trouble code (DTC). YES : Replace the PCM. Then go to Step 13. STEP 13. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Procedure 6 − Other Monitor (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. DTC P0301: Cylinder 1 Misfire Detected, DTC P0302: Cylinder 2 Misfire Detected, DTC P0303: Cylinder . Misfire Detected Circuit • Refer to DTC P0201 − P0206, Injector Circuit. . CIRCUIT OPERATION • Refer to DTC P0201 − P0206, Injector Circuit. . TECHNICAL DESCRIPTION • If a misfire occurs while the engine is running, the engine speed changes for an instant. • The PCM checks for such changes in engine speed. . DESCRIPTIONS OF MONITOR METHODS detect malfunction when negative variation of the . MONITOR EXECUTION . MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Not applicable AK200960 1 2 B-03(GR) B-11(GR) B-35(GR) B-33(GR) B-02(GR) B-01(GR) CONNECTORS: B-01, B-02, B-03, B-11, B-33, B-35 AB HARNESS CONNECTOR: |