Input And Output Signals

Signal	Unit	Function
Input signals	Manifold absolute pressure sensor	Detects the amount (measures the absolute pressure) of intake air.
	Mass air flow and intake air temperature sensor	Detects the temperature and amount of intake air.
	Throttle position sensor	Detects the throttle valve position.
	Front oxygen (A/F) sensor	Detects the density of oxygen in exhaust gases at the upstream of the front catalytic converter.
	Rear oxygen sensor	Detects the density of oxygen in exhaust gases at the downstream of the rear catalytic converter.
	Crankshaft position sensor	Detects the crankshaft angular position.
	Camshaft position sensor	Detects the combustion cylinder.
	Engine coolant temperature sensor	Detects the engine coolant temperature.
	Knock sensor	Detects engine knocking.
	Accelerator pedal position sensor	Indicates the accelerator pedal position.
	Variable valve lift diagnosis oil pressure switch	Detects the oil pressure in the variable valve lift circuit.
	Oil temperature sensor	Detects the oil temperature in the variable valve lift circuit.
	Ignition switch	Detects operation of the ignition switch.
	Starter switch	Detects the condition of engine cranking.
	Power steering switch	Detects the steering condition.
	A/C mid pressure switch	Detects the A/C refrigerant pressure through an ON-OFF switch.
	Inhibitor switch	Detects shift positions.
	A/C switch	Detects ON-OFF operation of the A/C switch.
	Fuel temperature sensor	Detects the temperature of the fuel in the fuel tank.
	Fuel tank pressure sensor	Detects the pressure in the fuel tank.
Output signals	Fuel injector	Activates an injector.
	Ignition signal	Turns the primary ignition current ON or OFF.
	Electronic control throttle	Controls motor output for the electronic control throttle.
	Electronic control throttle motor cut relay	Turns ON-OFF the electronic control throttle motor relay.
	Oil flow control solenoid valve	Controls oil pressure for AVCS.
	Oil switching solenoid valve	Controls oil pressure for variable valve lift.
	Fuel pump control unit	Controls the fuel pump.
	A/C control relay	Turns ON or OFF the A/C control relay.
	Radiator fan control signal	Controls operation of radiator fans.
	Malfunction indicator light (MIL)	Indicates existence of abnormality.
	Pressure control solenoid valve	Controls evaporation pressure in the fuel tank.
	Drain valve	Closes the evaporation line between the fuel tank and canister to detect leakage of evaporation gas.
	Purge control solenoid valve	Controls purge of evaporative gas absorbed by the canister.
	Heater circuit of front and rear oxygen sensors	Controls heater of front and rear oxygen sensors.
	Power supply	Controls ON/OFF of the main power supply relay.