Yanmar 6LY3 series Service Manual page 288

ELECTRICAL AND ECU
Alarm Indicators and Data Log
Alarm indicators and a buzzer comes on when sensors detect an abnormality during engine operation.
The alarm indicators are off during normal operation, but come on when an abnormality arises. (See the
table below.)
*1
Oil Press (Logging )
Coolant Temperature
Oil Temperature
Fuel Temperature
1 2
Boost press * , *
(Engine protection, Logging)
Over speed
1
(Engine stop, Logging * )
*1
"Log" shows alarm and is also memorized in ECU.
*2
"Engine Protection" shows the alarm and also limits the engine speed to 1800 rpm or less for engine
protection.
Alarm Diagram at Oil Pressure
Figure 12-34
200 kPa
(29 psi)
Alarm OFF
20 kPa
(2.9 psi)
1000
rpm
Alarm Diagram of Oil Pressure
Figure 12-34
12-22
Item
Alarm
*2
Engine protection
*1
(Log )
Alarm
*1
Log
Alarm
Log *1
Alarm ON
3000
rpm
0006297
© 2007 Yanmar Marine International
Remote Control Electronic Control System (ECS)
ON
100°C (212°F)
110°C (230°F)
110°C (230°F)
120°C (248°F)
80°C (176°F)
90°C (194°F)
250 kPa (36 psi)
3900 rpm
6LY3 Service Manual
OFF
(See Figure 12-34)
95°C (203°F)
105°C (221°F)
105°C (221°F)
115°C (239°F)
75°C (167°F)
85°C (185°F)
200 kPa (29 psi)
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