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GEN
INFO
Technical tips
Control system
Item
Condition
Reverse with
Shift lever is in the
traction con-
reverse position and
trol
the reverse sensor
operates.
Overheat
• Engine temperature
warning con-
rises rapidly in a
trol
short time.
• Thermoswitch is on.
• Exhaust cooling
water temperature
exceeds 75 °C
(167 °F).
Oil pressure
Control is activated
warning con-
when the following
trol
conditions are
present:
• Oil pressure switch
is on.
• ETV is open.
• Engine speed
exceeds 4,500 r/min.
ETV failure
ETV failed, or open or
control
short circuit is
detected in ETV cir-
cuit.
Action
Maximum engine speed is
limited to 3,000 r/min.
• Opening angle of the ETV
is regulated.
• Maximum engine speed is
limited to approximately
3,500–3,800 r/min.
• Opening angle of the ETV
is regulated.
• Maximum engine speed is
limited to approximately
3,500–3,800 r/min.
• Opening angle of the ETV
is fixed to the default open-
ing angle.
• Maximum engine speed is
limited to 3,000 r/min.
• Ignition timing is con-
trolled.
1-30
Remarks
Cancel:
Shift lever is returned to the
forward position.
Cancel:
• Stop the engine and wait
for 30 seconds or more.
• Engine temperature is
below 140 °C (248 °F)
with the thermoswitch off.
• Exhaust cooling water tem-
perature is below 70 °C
(158 °F) with the ETV fully
closed.
If the engine is stopped
during overheat warning
control, it can be restarted.
Cancel:
• Engine is stopped and
electric power supply to
the ECM is stopped.
• Engine is restarted and
the oil pressure switch is
off.
If the engine is stopped
during oil pressure warning
control, it can be restarted.
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