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Multiport Fuel Injection (MFI) System INPUT/OUTPUT SIGNAL LINE Camshaft position sensor E Engine speed and piston position ECM E Injector Mass air flow sensor E Amount of intake air Engine coolant temperature sensor E Engine coolant temperature Heated oxygen sensor 1 (front) E Density of oxygen in exhaust gas Throttle position sensor E Throttle position Throttle valve idle position PNP switch (TCM) E Park/Neutral position Vehicle speed sensor E Vehicle speed Ignition switch E Start signal Battery E Battery voltage Heated oxygen sensor 2 (rear)* E Density of oxygen in exhaust gas Secondary throttle position E TAC E Secondary throttle valve opening angle *: Under normal conditions, this sensor is not used to control the engine system. BASIC MULTIPORT FUEL INJECTION The amount of fuel injected from the fuel injector is VARIOUS FUEL INJECTION The amount of fuel injected is compensated for to I During warm-up I When starting the engine I During acceleration I Hot-engine operation I When selector lever is changed from “N” to “D” I High-load, high-speed operation <Fuel decrease> I During deceleration I During high speed operation I Extremely high engine coolant temperature I During TCS operation I During high engine speed operation GI MA EM LC FE AT PD FA RA BR ST RS BT HA EL IDX ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION EC-21 |