Komatsu Galeo PC138US-8 Shop Manual page 674

SEN02467-00
Trouble (2) Fuel level monitor lights up red.
Related • Signal voltage of fuel sensor can be checked with monitoring function.
information (Code: 04200 Fuel sensor voltage)
Possible causes Low fuel level (when system
1
and standard is normal)
value in normal
Defective fuel level gauge
state
2
system
Trouble (3) Engine coolant temperature monitor lights up white.
• Signals of engine coolant temperature sensor are input to engine controller and then transmitted to
Related machine monitor through communication system.
information • Engine coolant temperature can be checked with monitoring function.
(Code: 04107 Engine coolant temperature)
Insufficient warm-up of
Possible causes
1 machine (when system is
and standard
normal)
value in normal
state
Defective engine coolant
2
temperature gauge system
Trouble (4) Hydraulic oil temperature monitor lights up white.
• Signals of hydraulic oil temperature sensor are input to pump controller and then transmitted to
Related machine monitor through communication system.
information • Hydraulic oil temperature can be checked with monitoring function.
(Code: 04401 Hydraulic oil temperature)
Insufficient warm-up of
Possible causes
1 machine (when system is
and standard
normal)
value in normal
state
Defective hydraulic oil tem-
2
perature gauge system
20
Cause Standard value in normal state/Remarks on troubleshooting
Fuel level may be low (below about 41 l). Check it and add fuel if
necessary.
If cause 1 is not detected, fuel level gauge system may be defec-
tive. Carry out troubleshooting for E-11 Fuel level gauge does not
indicate normally.
Cause Standard value in normal state/Remarks on troubleshooting
If monitor lights up white, engine coolant temperature may be low
(below about 30°C). Warm up engine.
• Lighting up white: Engine coolant temperature is low.
• Lighting up blue: Engine coolant temperature is proper.
If cause 1 is not detected, engine coolant temperature gauge sys-
tem may be defective. Carry out troubleshooting for E-9 Engine
coolant temperature gauge does not indicate normally.
Cause Standard value in normal state/Remarks on troubleshooting
If monitor lights up white, hydraulic oil temperature may be low
(below about 20°C). Warm up engine.
• Lighting up white: Hydraulic oil temperature is low.
• Lighting up blue: Hydraulic oil temperature is proper.
If cause 1 is not detected, hydraulic oil temperature gauge system
may be defective. Carry out troubleshooting for E-10 Hydraulic oil
temperature gauge does not indicate normally.
40 Troubleshooting
PC138US, USLC-8