ENGINE CONTROL SYSTEM 3-35
CAUTION SYSTEM
The following four caution systems alert the operator when an
abnormality occurs on the engine.
• OVER-REVOLUTION CAUTION
• LOW OIL PRESSURE CAUTION
• OVERHEAT CAUTION
• LOW BATTERY VOLTAGE CAUTION
OVER-REVOLUTION CAUTION SYSTEM
CONDITION:
The ECM controlled over revolution limiter will engage at the engine speeds shown below. Once engaged it
will initiate an intermittent fuel injection signal to reduce engine speed.
Over revolution limiter
DF200/DF225 : 6 200 r/min
DF250 : 6 300 r/min
ACTION:
RESET:
Close throttle to reduce engine speed below approx. 3 000 r/min for one second.
CAUTION
TYPE
CAUTION
LAMP
CAUTION
BUZZER
OVER-REV
LIMITER
(3000 r/min)
Over-revolution Yes
1 No Yes
Low oil pressure Yes
2 (
1)Yes Yes
Overheat Yes
3 (
1)Yes Yes
Low battery voltage Yes
4 Yes No
Engine speed Automatically reduced to approx. 3 000 r/min by intermittent fuel injection signal.
Caution lamp “REV-LIMIT” lamp lights continuously.
Caution buzzer No buzzer sounds.
“REV LIMIT” lamp
“OIL” lamp
!
“TEMP” lamp
"
“CHECK ENGINE” lamp
MONITOR-TACHOMETER