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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-105 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • Engine coolant temperature is higher than 76°C (169 °F). • Repeat 5 or more times: drive *1 , stop *2 . Drive *1 : vehicle speed higher than 50 km/h (31 mph) lasting a total of more than 60 seconds. Stop *2 : vehicle speed lower than 1.5 km/h (1.0 mph) lasting more than 30 seconds. Judgement Criteria • Changes in the intake air temperature is lower than 1 °C (1.8°F). . OBD-II DRIVE CYCLE PATTERN − OBD-II Drive Cycle − Procedure 6 . . TROUBLESHOOTING HINTS (The most likely • Intake air temperature sensor failed. • Open or intake air temperature sensor circuit, harness damage, or connector damage. • PCM failed. END YES NO NO NO START MONITORING CONDITION YES MALFUNCTION GOOD INTAKE AIR TEMP. CHANGES GO/STOP OPERATION FOR SPECIFIED TIMES YES AK302383 |