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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-575 STEP 15. Perform the OBD-II drive cycle. Diagnostic Function − OBD-ll Drive Cycle − Procedure 1 − Evaporative Emission System Leak Monitor (2) Read the diagnostic trouble code (DTC). YES : Repeat the troubleshooting from Step 2. DTC P0452: Evaporative Emission System Pressure Sensor Low Input AC203991 SYSTEM DIAGRAM A B C D E F G H I J K L M N O Q S R P FUEL TANK CHECK VALVE B CHECK VALVE A EVAPORATIVE EVAPORATIVE EMISSION EVAPORATIVE VENT PIPE AC FUEL TANK DIFFERENTIAL ONBOARD REFUELING |