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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-595 . LOGIC FLOW CHARTS (Monitor Sequence) . DTC SET CONDITIONS Test Conditions: For Test to Run • Intake air temperature is between 5°C (41°F) and 45 °C (113°F) or greater. • Engine speed is 1,600 r/min or greater. • Volumetric efficiency is between 20 to 70 percent. Judgment Criteria • When the evaporative emission purge solenoid valve is fully operational (100 percent ratio), the . OBD-ll DRIVE CYCLE PATTERN − OBD-ll Drive Cycle − Procedure 1 − Evaporative Emission System Leak Monitor . TROUBLESHOOTING HINTS (The most likely • Malfunction of the fuel tank differential pressure sensor. • Open or shorted fuel tank differential pressure sensor circuit. • Malfunction of the PCM. . OVERVIEW OF TROUBLESHOOTING • DTC P0453 can be set by a faulty fuel tank differ- ential pressure sensor or related circuit, or PCM NO YES CONTINUOUS FAILURE FOR 10 SECS START END NO NO NO YES YES YES MALFUNCTION
GOOD MONITORING
CONDITIONS
OUTPUT VOLTAGE
< 1.0V OUTPUT VOLTAGE
> 4.0V AC210306 RANGE CHECK - MIN/MAX |