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Fuel Injection Timing NCEC0014S07 SEF337W Two types of systems are used. NCEC0014S0701 Fuel is injected into each cylinder during each engine cycle according to the firing order. This system is used NCEC0014S0702 Fuel is injected simultaneously into all four cylinders twice each engine cycle. In other words, pulse signals of Fuel Shut-off NCEC0014S08 Fuel to each cylinder is cut off during deceleration or operation of the engine at excessively high speeds. Distributor Ignition (DI) System DESCRIPTION NCEC0015 Input/Output Signal Chart NCEC0015S01 Sensor Input Signal to ECM ECM func- tion Actuator Camshaft position sensor Engine speed and piston position Ignition tim- Power transistor Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Throttle position sensor Throttle position Vehicle speed sensor Vehicle speed Ignition switch Start signal Knock sensor Engine knocking PNP switch Gear position Battery Battery voltage GI MA EM LC FE CL MT AT AX SU BR ST RS BT HA SC EL IDX ENGINE AND EMISSION BASIC CONTROL SYSTEM DESCRIPTION Multiport Fuel Injection (MFI) System (Cont’d) EC-31 |