9 - 10
Section C
Electrics
9803/6410
Section C
9 - 10
Issue 1
Fault Finding
Fault Diagnosis (continued)
Fluid Overheating, water, oil, Problem No 8
Note:
Message does not go out even if the actual temperature is below the following; Hydraulic Oil Temperature 84°C. Engine
Coolant Temperature 92°C.
Prior confirmation
Items
1
The
"MODE"
of the mode display is not flashing.
2.
Each bar graph displays more than one graduation.
3
Confirm that the water and oil temperature bar graph is lit at 8 graduations.
Troubleshoot
Cause
Remedy
Thermo switch
Replace
(water) defect
switch
Defective YR
wiring between CNB
Repair YR
and thermo switch
wiring
Defective YR
wiring between CN3
Repair YR
and CNB
wiring.
Controller defect
Replace
controller
Thermo switch
Replace
(water) defect
sensor.
Bad connection
Clean
of thermo (water)
sensor
connector
connector
terminal
Clean
Bad connection of
CNE
CNE
connector
terminal
Replace
Controller defect
controller
or bad connection
or clean
CN10
CN10
connector
terminal
Note:
When there is breakage in the wiring, the bar graph goes out completely.
Is thermo sensor
(water) temperature
abnormal at self-
check? (comparison of
actual and indicated
temperature)
YES
YES
YES
NO
1. Water temperature bar graph lit at 8 graduations.
Key switch
ON
Remove thermo sensor (water)
connector and measure resistance
of sensor side.
Is it within the range of values in
separate chart?
(Refer to resistance values in
separate chart)
When thermo switch
(water) connector is
removed, does
message go out?
When CNB connector
is removed, does
message go out?
When CN3 connector is
removed, does
message go out?
Remove CNE connector and
measure resistance between male
side terminal YB and GR.
Is it within the range of values in
separate chart?
(Refer to resistance values in
separate chart)
Remove CN10 connector and
measure resistance between
female side terminal YB and GR.
Is it within the range of values in
separate chart?
(Refer to resistance values in
separate chart)
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
Key switch
OFF
• Display water
temperature with
self-check
• Measure actual
temperature
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
Page 118: ......
Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
Page 207: ......
Page 209: ......
Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...