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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE> 13A-435 . CIRCUIT OPERATION • The ECM (terminal No. 114) supplies a 5 volts reference signal to the fuel tank differential pres- • The fuel tank differential pressure sensor (termi- nal No. 1) returns a voltage signal to the ECM . TECHNICAL DESCRIPTION • The ECM monitors the fuel tank differential pres- sure sensor output voltage. • The ECM determines whether the fuel tank differ- ential pressure sensor signal voltage is within . DESCRIPTIONS OF MONITOR METHODS • Compare evaporative purge solenoid status with fuel tank differential pressure sensor output volt- . MONITOR EXECUTION • Continuous. . MONITOR EXECUTION CONDITIONS Other Monitor (There is no temporary DTC stored in memory for the item monitored below) • Evaporative emission purge solenoid monitor • Evaporative emission ventilation solenoid monitor • Fuel temperature sensor monitor • Fuel level sensor monitor Sensor (The sensors below are determined to be normal) • Mass airflow sensor • Barometric pressure sensor • Intake air temperature sensor • Engine coolant temperature sensor • Accelerator pedal position sensor . |