Input And Output Signals

Signal	Unit	Function
Input signals	Manifold absolute pressure sensor	Detects the pressure of intake air (measures the absolute pressure).
	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.
	Front oxygen sensor Rear oxygen sensor	Detects the density of oxygen in exhaust gases at the downstream of the front 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.
	Ignition switch	Detects operation of the ignition switch.
	Starter switch	Detects the condition of engine cranking.
	Neutral position switch (MT)	Detects that the gear is in neutral.
	Inhibitor switch (AT)	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 level sensor	Detects the level of the fuel in the fuel tank.
	Fuel tank pressure sensor	Detects the evaporation gas pressure in the fuel tank.
	A/C mid pressure switch	Detects operation of the A/C mid pressure switch.
	Wiper switch	Detects ON-OFF operation of the wiper switch.
	Power steering switch	Detects operation of the power steering switch.
	Small light switch	Detects ON-OFF operation of the small light switch.
	Blower fan switch	Detects ON-OFF operation of the blower fan switch.
	Rear defogger switch	Detects ON-OFF operation of the rear defogger switch.
Output signals	Fuel injector	Activates an injector.
	Ignition signal	Turns the primary current to the ignition coil ON or OFF.
	Electronic control throttle	Controls motor output for the electronic control throttle.
	Fuel pump relay	Turns ON or OFF the fuel pump relay.
	A/C control relay	Turns ON or OFF the A/C control relay.
	Radiator fan control relay	Turns ON or OFF the radiator fan control relay.
	Tumble generator valve actuator	Operates the tumble generator valve.
	Engine warning light	Indicates existence of abnormality.
	Purge control solenoid valve	Controls purge of evaporative gas absorbed by the canister.
	EGR valve	Adjusts the exhaust gas circulating flow to the intake pipe.
	Heater circuit of front and rear oxygen sensors	Controls heater of front and rear oxygen sensors.
	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.
	Power supply	Controls ON/OFF of the main power supply relay.