SEN04123-01 40 Troubleshooting
24 PC130-8
Trouble (4) Engine coolant temperature monitor lights up white.
Related infor-
mation
• Signals of engine coolant temperature sensor are input to engine controller and then transmitted to
machine monitor through communication system.
• Engine coolant temperature can be checked with monitoring function.
(Code: 04107 Engine coolant temperature)
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Insufficient warm-up of
machine (when system is
normal)
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.
2
Defective engine coolant
temperature gauge system
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.
Trouble (5) Hydraulic oil temperature monitor lights up white.
Related infor-
mation
• Signals of hydraulic oil temperature sensor are input to pump controller and then transmitted to
machine monitor through communication system.
• Hydraulic oil temperature can be checked with monitoring function.
(Code: 04401 Hydraulic oil temperature)
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Insufficient warm-up of
machine (when system is
normal)
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.
2
Defective hydraulic oil tem-
perature gauge system
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.
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