ELECTRICAL SYSTEM
L3301, L3901, L4701, WSM
9-M4
Engine Electric Control Unit (ECU)
The ECU (1) function to operate in accordance with
information coming from various sensors.
It has the role of controlling all the components while
sharing sensor information necessary for control and
control information with the electronic instrument panel.
Engine ECU (1) receives signals from the sensors,
calculates the proper injection quantity and injection
timing for optimal engine operation, and sends the
appropriate signals to the actuators. ECU (1) enables
the injectors to be actuated at high speeds.
9Y1211012ELM0007US0
(3) Switches
Key Switch
The key switch (1) transmits a main switch "ON"
signal and a "ST" signal to the electronic instrument
panel at the time of engine starts. When each lever
switch and the associated are in the neutral position, the
computer in the electronic instrument panel detects the
signals and determines whether the engine can start
safety.
9Y1211012ELM0008US0
Engine Oil Pressure Switch
Engine oil pressure switch (1) is turned on when the
engine oil pressure is lower than 50 kPa (0.5 kgf/cm
2
,
7 psi). When the engine starts oil pump starts operating.
Then the oil pressure rises and the engine oil switch (1)
turns off.
9Y1211012ELM0009US0
(1) Main Electric Control Unit
(ECU)
(1) Key Switch
(1) Engine Oil Pressure Switch
To Next Page
Loading...
Need help?
General
