Name
|
Function
|
ECU
|
Engine-ECU
|
Effects control to actuate the actuators in accordance with the driving
conditions, based on the signals input by the sensors.
|
Sensors
|
Ignition switch-IG
|
Detects the ignition switch-IG ON/OFF signals. The engine-ECU turns
the engine control relay ON/OFF in accordance with these signals.
|
Ignition switch-ST
|
Detects that the engine is cranking. Based on this signal, the engine-ECU
effects fuel injection amount and fuel injection timing control that are suited for starting
the engine.
|
Accelerator pedal position sensors (main and sub)
|
Detects the position of the accelerator pedal and input it into the
engine-ECU. Based on the voltage output by these sensors, the engine-ECU controls fuel injection
amount in accordance with the accelerator pedal position.
|
Engine coolant temperature sensor
|
Contains a thermistor to detect the engine coolant temperature. The
engine-ECU determines the warm-up condition of the engine based on the signals output by this
sensor, and controls the pre-glow time and fuel injection amount.
|
Fuel temperature sensor
|
Contains a thermistor to detect the fuel temperature. Based on the
voltage that is output by this sensor, the engine-ECU corrects the fuel injection amount to
suit the fuel temperature.
|
Crank angle sensor
|
Detects the engine speed and crankshaft position. Based on this signal,
the engine-ECU controls the fuel injection amount and fuel injection timing.
|
Air flow sensor
|
Measures the current air mass. The engine-ECU calculates the exhaust
gas recirculation rate based on this output signal.
|
Intake air temperature sensor
|
Contains a thermistor to detect the intake air temperature. Based
on the voltage that is output by this sensor, the engine-ECU corrects the boost pressure.
|
Camshaft position sensor
|
Detects the No. 1 cylinder compression top dead centre position by
means of a Hall element.
|
Boost pressure sensor
|
Detects the absolute pressure in the inlet manifold. The engine-ECU
uses the voltage that is output by this sensor to control the boost pressure.
|
Barometric pressure sensor
|
Detects the barometric pressure. The engine-ECU corrects the boost
pressure and EGR amount to suit the barometric pressure.
|
Alternator FR terminal
|
This terminal is used for detecting the duty cycle ratio that energizes
the alternator field coil.
|
Engine oil pressure switch
|
Detects smaller amounts condition of the engine oil and inputs it
to the engine-ECU.
|
Cruise control switch
|
Detects the ON of cruise switch and inputs it to the engine-ECU.
|
Stop lamp switch
|
Detects the depression of brake pedal and inputs it to engine-ECU.
|
Clutch switch
|
Detects the depression of clutch pedal and inputs it to the engine-ECU.
|
Intake air control flap diagnostic signal
|
Detects the malfunction of the intake air control flap system and
inputs it to the engine-ECU.
|
Glow diagnostic signal
|
Detects the malfunction of the glow system and inputs it to the engine-ECU.
|
Actuators
|
Injectors
|
Inject fuel in accordance with the actuation signals provided by
the engine-ECU.
|
Engine control relay
|
In accordance with the signals provided by the engine-ECU, this relay
controls the power supply for the engine-ECU, sensors and actuators.
|
Glow plug relay
|
Controls the actuation of the glow plugs in accordance with the signals
provided by the engine-ECU.
|
Condenser fan relay
|
Controls the actuation of the condenser fan in accordance with the
signals provided by the engine-ECU.
|
A/C compressor relay
|
Controls the actuation of the A/C compressor in accordance with the
signals provided by the engine-ECU.
|
Intake air control flap
|
Controls the actuator of the intake air flap in accordance with the
signals provided by the engine-ECU.
|
EGR control solenoid valve
|
Controls the actuator of the EGR valve in accordance with the signal
provided by the engine-ECU.
|
EGR cooler solenoid valve
|
Turns the exhaust flap ON/OFF in accordance with the signal provided
by the engine-ECU.
|
Variable geometry solenoid valve
|
Controls the angle of the variable nozzle by actuating this solenoid
valve in accordance with the signal from the engine-ECU.
|
Alternator L terminal
|
Controls the initiating excitation current to the alternator in accordance
with the signals provided by the engine-ECU.
|
Fuel pump relay
|
Controls the power supplied to the fuel pump in accordance with the
signals provided by the engine-ECU.
|
Starter relay
|
Controls the power supplied to the starter in accordance with the
signals provided by the engine-ECU.
|
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