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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-455 STEP 14. Check for entry of foreign matter (water, YES : Go to Step 15. STEP 15. Replace the right bank injector. Diagnostic Function − OBD-II Drive Cycle − Procedure 2 − Fuel Trim Monitor (3) Check the diagnostic trouble code (DTC). YES : Replace the ECM or PCM. Then go to Step 16. STEP 16. Test the OBD-II drive cycle. Diagnostic Function − OBD-II Drive Cycle − Procedure 2 − Fuel Trim Monitor (2) Check the diagnostic trouble code (DTC). YES : Retry the troubleshooting. DTC P0172: System too Rich (bank 1) . System too Rich (bank 1) Circuit • Refer to DTC P0201, P0203, P0205 − Injector Circuit . CIRCUIT OPERATION • Refer to DTC P0201, P0203, P0205 − Injector Circuit . TECHNICAL DESCRIPTION • If a malfunction occurs in the fuel system, the fuel trim value becomes too small. • The ECM <M/T> or PCM <A/T> checks whether the fuel trim value is within a specified range. . DESCRIPTIONS OF MONITOR METHODS and air/fuel feedback integral value (short time . MONITOR EXECUTION . MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Misfire monitor Sensor (The sensor below is determined to be normal) • Volume airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor • Throttle position sensor . AK300752 1 2 CONNECTORS: B-01, B-05, B-26 AB B-05 (GR) B-26 (GR) B-01 (GR) HARNESS CONNECTOR: |