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UEN00241-01
Failure code [CA488] Chg Air Temp High Torque Derate
User code
Failure code
E15
Contents of
• Temperature signal of boost pressure/temperature sensor exceeded control upper temperature limit.
trouble
Action of
• Limits output and continues operation.
controller
Problem that
appears on
• Engine output lowers.
machine
Related infor-
• Boost temperature can be checked with monitoring function. (Code: 18500 Boost temperature)
mation
• Method of reproducing failure code: Start engine.
Lowering of cooling perfor-
1
Possible causes
mance of aftercooler
and standard
value in normal
state
Abnormal rise of turbo-
2
charger outlet temperature
3 Defective engine controller
Failure code [CA553] Rail Press High Error
User code
Failure code
E11
Contents of
• There is high pressure error in common rail circuit.
trouble
Action of
• None in particular.
machine monitor
Problem that
• Engine sound becomes large when no or light load is applied.
appears on
• Engine output lowers.
machine
• Common rail pressure can be checked with monitoring function.
Related infor-
(Code: 36400 Common rail pressure)
mation
• Method of reproducing failure code: Start engine.
1 Defect in related system
Possible causes
and standard
Defective connection of
2
value in normal
ground terminal
state
Breakage of O-ring of supply
3
pump actuator
26
Trouble
CA488
Cause
Trouble
CA553
Cause
Charge air temperature high torque derate
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Cooling performance of aftercooler may be low. Check following
points directly.
• Looseness and breakage of fan belt.
• Insufficiency of cooling air
• Clogging of aftercooler fins
Outlet temperature of turbocharger may be abnormally high. Check
related parts directly.
If causes 1 – 2 are not detected, engine controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
Common rail pressure high error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
If another failure code is displayed, carry out troubleshooting for it.
Ground terminal may be connected defectively. Check following ter-
minals directly.
• Ground terminal of machine ((–) terminal of battery)
• Ground terminal of engine
• Ground terminal of engine controller
• Ground terminal of starting motor
O-ring of supply pump actuator may be broken. Check it directly.
40 Troubleshooting
1
1
PC210, 230, 240-8
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Table of Contents
Troubleshooting
