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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L> 13B-435 DTC SET CONDITIONS Logic Flow Chart . Check Conditions • 60 seconds have elapsed from the start of the previous monitoring. • Engine coolant temperature is higher than 20°C (68 °F). • While the left bank heated oxygen sensor (rear) heater is on. • Battery positive voltage is between 11 and 16.5 volts. Judgment Criteria • Heater current of the left bank heated oxygen sensor (rear) heater has continued to be lower . OBD-ll DRIVE CYCLE PATTERN − OBD-ll Drive Cycle − Procedure 6 . . TROUBLESHOOTING HINTS (The most likely • Open or shorted left bank heated oxygen sensor (rear) heater circuit, harness damage. • Open circuit in left bank heated oxygen sensor (rear) heater. • ECM failed. <M/T> • PCM failed. <A/T> • Connector damage. START END YES YES YES YES NO NO NO NO MALFUNCTION GOOD CONTINUOUS FAILURE FOR 4secs MONITORING CONDITIONS CURRENT < 0.16A CURRENT > 5.0A AK301443 |