TOHATSU MD 40B2 - Page 41

PRE-OPERATING PREPARATIONS 41
6
ENOM00041-C
Warning indicators, faults and remedy
High speed ESG (Electronic Safety Governor)
High speed ESG is a device to prevent over revolution of the engine. If the load to the engine becomes light for
some reason, it runs at a higher speed than the usual. In such the case, the buzzer sounds and the ESG is
activated not to ignite the spark plug, therefore, the engine speed varies and be controlled under 6000min
-1
(rpm).
Low speed ESG
Low speed ESG is a device to prevent the engine from getting damage. If the engine has problems regarding
cooling water, oil pressure, and sensors, the low speed ESG is activated not to ignite the spark plug, and
disable fueling therefore, the engine speed varies and be controlled under 3000min
-1
(rpm).
Warning indicators
E S G
Description of faults
or notice
Remark
Rem-
edy
Sound
A
lamp
B
lamp
C
lamp
Continu-
ous
ON ON ON -
Normal system test
when key on
1 second
Continu-
ous
- - -
High
speed
ESG
Engine speed exceeds
maximum
allowable RPM
Approx.
6,000 r/min
1
Intermit-
tent (3
beeps for
every 2
minutes)
Flash-
ing
- -
Low
speed
ESG
Low oil level 2
Continu-
ous
-
Flash-
ing
-
Low
speed
ESG
Cooling water temp. is
high
3
Continu-
ous
-
Flash-
ing
-
Forced
idling
Cooling water temp is
abnormally high
3
-
- -
Flash-
ing
- Battery voltage is low
Engine is stopped
under 9V
4
-
-
Flash-
ing
-
Low
speed
ESG
Battery voltage is low Approx. 10V or less 4
-
Flash-
ing
Flash-
ing
Flash-
ing
Low
speed
ESG
Malfunction of sensor 5
-
Flash-
ing
Flash-
ing
Flash-
ing
Forced
idling
Malfunction of sensor 5
-
Flash-
ing
Flash-
ing
Flash-
ing
-
Malfunction of electrical
part or sensor
5