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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-221 DTC SET CONDITIONS . Check Conditions • Engine coolant temperature is between − 10° C (14° F) and 60° C (140° F) when the engine is started. • Intake air temperature is − 10° C (14° F) or higher. intake air temperature when the engine is started • The total time when the amount of intake air is small is less than the specified time. Judgement Criterion • After the estimated engine coolant temperature rises above 77° C (171° F), the actual engine coolant temperature is less than 77° C (171° F) even though the specified time has passed. . FAIL-SAFE AND BACKUP FUNCTION • None . OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle − Pattern 9 . . End Yes Malfunction Estimate engine coolant temp. Good Specified time has passed? No No
Monitoring Actual engine coolant Estimated engine coolant temp. >= 77˚C (171˚F) No AK900356 Start Yes No Yes YES |