Fuel Injection (Fuel System)
CONTROL SYSTEM
FU-26
B: INPUT AND OUTPUT SIGNALS
*: With catalytic converter
Signal Unit Function
Input signals
Intake air temperature and pressure
sensor
Detects the temperature of intake and amount of intake air (Measures
the absolute pressure).
Throttle position sensor Detects the throttle valve position.
Oxygen sensor* Detects the density of oxygen in exhaust gases at the upstream 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.
Vehicle speed sensor Detects the vehicle speed.
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.
Park/Neutral position switch (AT) Detects shift positions.
Torque control signal (AT) Controls engine torque.
Heater circuit of oxygen sensor* Detects abnormality in the heater circuit of the oxygen sensors.
Diagnostics of AT-ECU Detects the self-diagnostics of the AT-ECU.
A/C switch Detects ON-OFF operation of the A/C 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 ignition current ON or OFF.
Fuel pump relay Turns the fuel pump relay ON or OFF.
A/C control relay Turns the A/C control relay ON or OFF.
Radiator fan control relay Turns the radiator fan control relay ON or OFF.
Idle air control solenoid valve Adjusts the amount of air flowing through the bypass line in the throttle
body.
Malfunction indicator lamp Indicates existence of abnormality.
Purge control solenoid valve Controls purge of evaporative gas absorbed by the canister.
Power supply Control ON/OFF of the main power supply relay.
W2290GE_03_FU-.fm 26 ページ ２００１年４月１１日 水曜日 午前９時３６分
To Next Page
Loading...
