.
OPERATION
TROUBLES AND ACTIONS
Electronic Control System
When the user code is shown on the display portion of the machine
monitor, take the respective measures shown in the self-diagnosis
chart below.
Machine Monitoring System
Monitor
display
Failure mode Action
E02 Pump control system error
When emergency pump drive switch is at the up
(emergency) position, normal operations become possible,
but have inspection carried out immediately. (*1)
E03 Swing brake system error Have inspection carried out immediately.
E10
Engine controller power source error
Engine controller drive system circuit
error (engine stopped)
Have inspection carried out immediately.
E11
Engine controller system error
Output reduced to protect engine
Operate machine to a safe posture and have inspection
carried out immediately.
E14 Abnormality in throttle system
Operate machine to a safe posture and have inspection
carried out immediately.
E15
Engine sensor (coolant temperature,
fuel pressure, oil pressure) system
error
If a display of "CA2249" or "CA559" appears in the user
code screen and yet the machine has not run out of fuel,
replace both fuel main filter element and fuel pre-filter
element immediately. (*2)
If the display of "CA2249" or "CA559" still does not
disappear after the replacement, ask your Komatsu
distributor for an inspection immediately, even though
normal operation of the machine is still possible.
On the other hand, if any other code than "CA2249" and
"CA559" appears in the user code screen, again ask your
Komatsu distributor for an inspection immediately, even
though normal operation of the machine is still possible.
E0E Network error
Operate machine to a safe posture and have inspection
carried out immediately.
(*1): For details of handling the emergency pump drive switch, see "Emergency Pump Drive Switch (PAGE 3-74)".
(*2): For the replacement of the fuel main filter element, see "REPLACE FUEL MAIN FILTER CARTRIDGE (PAGE
4-70)" and for the replacement of the fuel pre-filter element, see "REPLACE FUEL PRE-FILTER CARTRIDGE
(PAGE 4-57)" respectively.
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