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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) 13A-317 . CIRCUIT OPERATION • Power is supplied from the MFI relay (terminal No. 1) to the left bank heated oxygen sensor • The PCM (terminal No. 3) controls continuity to the left bank heated oxygen sensor (front) heater . TECHNICAL DESCRIPTION • The PCM checks whether the heater current is within a specified range when the heater is ener- . DESCRIPTIONS OF MONITOR METHODS rent is out of specified range when engine coolant °C (68°F). . MONITOR EXECUTION . MONITOR EXECUTION CONDITIONS (Other Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Not applicable Sensor (The sensor below is determined to be normal) • Engine coolant temperature sensor . AK200495 LEFT BANK A-09(GR) AB CONNECTOR: A-09 AK201000 MFI RELAY CONNECTOR: C-59 AB C-59 AK103911AB CONNECTOR: C-14 C-14 AK103738AD CONNECTOR: C-89 PCM C-89(GR) |