|
|
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS TSB Revision MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE> 13B-517 . CIRCUIT OPERATION • The ECM (terminal No. 114) supplies a 5-volt ref- erence signal to the fuel tank differential pressure • 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 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 • 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 . AK704189 Fuel tank differential D-19 Connector: D-19 AB |