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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-565 LOGIC FLOW CHARTS (Monitor Sequence) . DTC SET CONDITIONS Test Conditions: For Test to Run • Intake air temperature is higher than 5°C (41°C). • Engine speed is 1,600 r/min or more. • Volumetric efficiency is between 25 and 80 per- cent. Judgment Criteria • When the evaporative emission purge solenoid is off, the fuel differential pressure sensor output . OBD-ll DRIVE CYCLE PATTERN − OBD-ll Drive Cycle − Procedure 1 − Evaporative Emission System Leak Monitor . TROUBLESHOOTING HINTS • Fuel tank differential pressure sensor failed. • Open fuel tank differential pressure sensor cir- cuit, or loose connector. • PCM failed. . 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
AC306648 RANGE CHECK - MIN/MAX |