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MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE> 13B-756 . CIRCUIT OPERATION • The PCM (terminal 21) supplies a 5-volt refer- ence signal to the fuel tank differential pressure • The fuel tank differential pressure sensor (termi- nal 1) returns a voltage signal to the PCM (termi- . TECHNICAL DESCRIPTION • The PCM monitors the fuel tank differential pres- sure sensor output voltage. • The PCM determines whether the fuel tank differ- ential pressure sensor signal voltage is within . DESCRIPTIONS OF MONITOR METHODS • Compare purge solenoid status with fuel tank dif- ferential pressure sensor output voltage. . 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 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 . AC305266 CONNECTOR: D-23 AB D-23 (B) |