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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L> 13A-329 MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Misfire monitor Sensor (The sensor below is determined to be normal) • Volume airflow sensor • Engine coolant temperature sensor • Intake air temperature sensor • Barometric pressure sensor • Throttle position sensor . DTC SET CONDITIONS Logic Flow Chart . Check Conditions • Engine coolant temperature is lower than approx- imately 100 °C (212°F) when the engine is started. • Intake air temperature is lower than 60°C (140°F) when the engine is started. • Under the closed loop air/fuel ratio control. • Engine coolant temperature is higher than 77°C (171 °F). • Volume airflow sensor output frequency is 88 Hz or more. K LRN : LONG-TERM TRIM K I : SHORT-TERM TRIM K0 : MAXIMUM LIMIT OF LONG-TERM TRIM START MONITORING CONDITIONS END NO NO NO NO NO NO YES YES YES YES YES YES K LRN > K0 MALFUNCTION GOOD K LRN < K2 K I < K3 K I > K1 CONTINUOUS FAILURE FOR 5secs AK204050 |