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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-605 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • Under the closed loop idle speed control. (45° F) and 41° C (106° F). • Battery positive voltage is higher than 10 volts. in.Hg). • Intake air temperature is higher than −10° C (14° F). • More than 3 seconds have elapsed from the pre- vious monitoring. • Target air flow rate is 29 g/sec (24 L/sec) or more. Judgment Criterion • The actual idle speed is more than 100 r/min lower than the target idle speed for 10 seconds. . FAIL-SAFE AND BACKUP FUNCTION • None . OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle − Pattern 19 . . TROUBLESHOOTING HINTS (The most • Throttle valve area is dirty. Good Malfunction Calculate Ne End No No No AK704413 Ne < -100 r/min or > 200 r/min Have 10secs passed? Ne = (actual-Ne) - (target-Ne) Ne: engine speed Start Yes Yes Yes Monitoring |