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SEN02631-02
Failure code [DXE4KA] Service Current EPC Open Circuit
Action code
Failure code
—
DXE4KA
Contents of
• No current flows to service current EPC solenoid circuit.
trouble
Action of con-
• None in particular. (Since no current flows, solenoid does not operate.)
troller
• If cause of failure disappears, system resets itself.
Problem that
appears on
• Attachment does not move.
machine
• Carry out troubleshooting only for setting with ATT. (Confirm settings on the monitor panel.)
Related infor-
• Output to service current EPC solenoid (current value) can be checked with monitoring function.
mation
(Code 01700: Service solenoid current)
Defective service current
1
EPC solenoid (Internal dis-
connection)
Disconnection in wiring har-
ness
2
(Disconnection in wiring or
Possible causes
defective contact in connec-
and standard
tor)
value in normal
state
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
4 Defective pump controller
Circuit diagram related to service current EPC solenoid of pump controller
50
Service current EPC solenoid disconnection
Trouble
(Pump controller system)
Cause
Standard value in normal state/Remarks on troubleshooting
a
a
Wiring harness between CP02 (female) (97)
– V30 (female) (1)
Wiring harness between CP02 (female)
(115), (117), (120) – V30 (female) (2)
a
Wiring harness between CP02 (female) (97)
– V30 (female) (1) and chassis ground
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
V30 (male)
Between (1) – (2)
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CP02 (female)
Between (97) –
(115), (117), (120)
40 Troubleshooting
1
Resistance
7 – 14 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resistance
7 – 14 z
PC300, 350-8
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Table of Contents
Troubleshooting
