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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-519 DTC SET CONDITIONS . Check Conditions • Under the ignition timing retard control. • Engine coolant temperature is between 7°C (45 °F) and 41°C (106°F). Judgement Criterion • For 10 seconds, the difference between the basic ignition timing and the target/specified ignition °CA or less on average during the retard control. . OBD-II DRIVE CYCLE PATTERN Refer to Diagnostic Function − OBD-II Drive Cycle − Pattern 19 . TROUBLESHOOTING HINTS (The most • The thermostat is faulty. • ECM failed. End No No Malfunction Good Average θ <= 3˚CA AK604371 Start Yes Yes Yes Yes Monitoring 10secs have passed Ignition timing retard control status ON θ = Base ignition timing - commanded ignition timing No No |