Komatsu PC490LC - Page 93

Caution lamps and display colors
Symbol Type of caution lamp
Display color/Machine condition (Action level)
Red Yellow White Blue
Engine coolant temperature
caution lamp
High temperature
(L02)
-
Low temper-
ature
Normal
Hydraulic oil temperature
caution lamp
High temperature
(L02)
-
Low temper-
ature
Normal
Fuel level caution lamp Low level - - Normal
System caution lamp
Abnormal
(L04/L03)
Abnormal
(L01)
- -
Hydraulic system caution
lamp
Abnormal
(L04/L03)
Abnormal
(L01)
- -
KDPF system caution lamp
Abnormal
(L04/L03)
Abnormal
(L01)
- -
KDPF soot accumulation
caution lamp
Abnormal
(L03)
Accumulated
(L01)
－ －
DEF level caution lamp
Abnormal
(L04/L03)
－ － －
DEF system caution lamp
Abnormal
(L03)
Abnormal
(L01)
－ －
DEF system high tempera-
ture stop caution lamp
－
Engine stopped
at high tempera-
ture
(L01)
－ －
Engine system caution lamp
Abnormal
(L04/L03)
Abnormal
(L01)
- -
Engine oil pressure caution
lamp
Low oil pressure
(L03)
- - -
OPERATION EXPLANATION OF COMPONENTS
3-21