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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-261 DTC SET CONDITION Logic Flow Chart . Check Conditions • Engine coolant temperature is higher than 76°C (169 °F). • The right bank heated oxygen sensor (front) is active. • The cumulative mass airflow sensor output is higher than 1,638 g. • Repeat 1 or more times: drive *1 , stop *2 . Drive *1 • Engine speed is higher than 1,500 r/min. • Volumetric efficiency is higher than 40 per- cent. • Vehicle speed is higher than 30 km/h (19 mph). • A total of more than 60 seconds have elapsed with the above mentioned condi- Stop *2 : • Vehicle speed is lower than 1.5 km/h (1.0 mph). AK800872 Start End No No No No Yes Yes Yes Yes Malfunction Good Maximum output 1 Monitoring conditions Output voltage change < V 0 Go/stop operation for specified times V 0 , V 1 : Threshold valve *: See DTC SET CONDITIONS-Judgment Criterion |