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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-395 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • 3 minutes or more have passed since the starting sequence was completed. • Left bank heated oxygen sensor (rear) signal volt- age has continued to be 0.15 volt or lower. • Engine coolant temperature is higher than 76°C (169 °F). • Engine speed is higher than 1,200 r/min. • Volumetric efficiency is higher than 25 percent. • Monitoring time: 7 seconds. START V F > =4.5V 2secs HAS PASSED YES YES YES NO NO NO MALFUNCTION MONITORING CONDITIONS YES NO MONITORING CONDITIONS +5V ON AK301440 V F < 0.15V 10secs HAS PASSED YES YES NO NO END MALFUNCTION GOOD MODULATE A/F CONDITION TO RICH |