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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-509 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • Accelerator pedal is not depressed. • Vehicle speed is less than 1.5 km/h (1 mph). NOTE: The conditions for deviating from idling . • Vehicle speed is more than 50 km/h (31 mph). Judgement Criteria • The drastic pressure fluctuation is detected 20 times or more per engine idling, which is that the AK705072 Start Off-idling condition Idling condition? F1 = 0 Off-idling condition Yes No End No Malfunction F1 > 20 FTPS output voltage fluctuation > 0.2V No Yes Yes F1 = F1 + 1 Good No Yes Yes No Yes No Specified times monitored |