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ENGINE CONTROL SYSTEM EC-31 [KA24DE] C D E F G H I J K L M A EC System Chart UBS00D0Y *1: This sensor is not used to control the engine system. They are used only for the on board diagnosis. Multiport Fuel Injection (MFI) System UBS00D0Z INPUT/OUTPUT SIGNAL CHART *: This sensor is not used to control the engine system under normal conditions. SYSTEM DESCRIPTION The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of Input (Sensor) ECM Function Output (Actuator) ● Camshaft position sensor ● Mass air flow sensor ● Engine coolant temperature sensor ● Heated oxygen sensor 1 ● Ignition switch ● Throttle position sensor ● Park/neutral position (PNP) switch ● Air conditioner switch ● Knock sensor ● EGR temperature sensor* 1 ● Crankshaft position sensor (OBD) ● EVAP control system pressure sensor* 1 ● Fuel tank temperature sensor ● Battery voltage ● Fuel level sensor* 1 ● Power steering oil pressure switch ● Vehicle speed sensor ● Intake air temperature sensor ● Heated oxygen sensor 2* 2 ● Closed throttle position switch* 3 Fuel injection & mixture ratio control Fuel injector Distributor ignition system Power transistor Idle air control system IACV-AAC valve and IACV-FICD Fuel pump control Fuel pump relay Heated oxygen sensor 1 monitor & on Malfunction indicator lamp EGR control EGRC-solenoid valve Heated oxygen sensors 1, 2 heater control Heated oxygen sensor heater EVAP canister purge flow control ● EVAP canister purge volume Air conditioning cut control Air conditioner relay ON BOARD DIAGNOSIS for EVAP system ● EVAP canister vent control ● Vacuum cut valve bypass valve Sensor Input Signal to ECM ECM Function Actuator Camshaft position sensor Engine speed and piston position Fuel injection & Fuel injector Mass air flow sensor Amount of intake air Engine coolant temperature sensor Engine coolant temperature Heated oxygen sensor 1 Density of oxygen in exhaust gas Throttle position sensor Throttle position Park/neutral position (PNP) switch Gear position Vehicle speed sensor Vehicle speed Ignition switch Start signal Air conditioner switch Air conditioner operation Knock sensor Engine knocking condition Battery Battery voltage Power steering oil pressure switch Power steering operation Heated oxygen sensor 2* Density of oxygen in exhaust gas |