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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-425 • Barometric pressure is more than 76 kPa (22.4 in.Hg). • Vehicle speed is more than 20 km/h (12 mph). age is between 1.0 and 4.0 volts. • At least 10 seconds have passed since the last monitor was complete. • Monitoring time: 75 − 125 seconds Judgement Criterion • Internal pressure of the fuel tank has changed more than 1,010 Pa (0.29 in.Hg) in 20 seconds . • The monitoring time (75 − 125 seconds) depends on the fuel level and the temperature • The next monitoring occurs at least 10 sec- Check Conditions • Amount of remaining fuel is 40 − 85 percent of capacity when the engine is started. • Engine coolant temperature is less than 36° C (97° F) when the engine is started. • Intake air temperature is less than 36° C (97° F) when the engine is started. • Engine coolant temperature is more than 20° C (68° F). • Intake air temperature is more than −10° C (14° F). and evaporative emission ventilation solenoid are • Barometric pressure is more than 76 kPa (22.4 in.Hg). • Fuel tank differential pressure sensor output volt- age is between 1.0 and 4.0 volts. • At least 10 seconds have passed since the last monitor was complete. • Monitoring time: 10 − 14 minutes Judgement Criterion • Internal pressure of the fuel tank has changed more than 1,922 Pa (0.56 in.Hg) in 88 seconds . • The monitoring time (10 − 14 minutes) depends on the fuel level and the temperature • The next monitoring occurs at least 10 sec- . FAIL-SAFE AND BACKUP FUNCTION • None . OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle − Pattern 4 . TROUBLESHOOTING HINTS (THE MOST • Loose fuel cap. not seal. |