Engine Coolant Temperature Gauge Display Does Not Move From Minimum Or Maximum - Komatsu PC88MR-10 Shop Manual

E-14 Engine coolant temperature gauge display does not move from
minimum or maximum
1) While coolant temperature is rising normally, it does not rise from white range (C).
Failure
2) While coolant temperature is stabilized normally, it rises to red range (H).
Signal voltage of coolant temperature sensor is input to engine controller and then the
data is transmitted to machine monitor through CAN communication system.
Related
Coolant temperature can be checked with monitoring function.
information
(Code: 04107)
No. Cause
Defective coolant
temperature sensor
1
system
Defective machine
2
monitor
Engine coolant temperature gauge and coolant temperature monitor
PC88MR-10
(PC88MR-FGG-400-A-Z0-A)
Procedure, measuring location, criteria, and remarks
Coolant temperature sensor system may be defective. Perform
troubleshooting for failure codes [CA144] and [CA145].
If no failure is found by check on Cause 1, machine monitor may be defective.
(Since this is an internal defect, troubleshooting cannot be performed.)
40 Troubleshooting
Troubleshooting of electrical system (E-mode)
40-401