Komatsu PC130-8 User Manual

SEN04122-01 40 Troubleshooting
6 PC130-8
Failure code [DXE4KA] Service current EPC discon 1
User code Failure code
Trouble
Service current EPC solenoid disconnection
(Pump controller system)
— DXE4KA
Contents of
trouble
• When service EPC solenoid was driven, disconnection was detected in circuit.
Action of
controller
• None in particular (Since no current flows, solenoid does not operate).
• If cause of failure disappears, system resets itself.
Problem that
appears on
machine
• Attachment does not operate.
Related
information
• Drive current of service EPC solenoid can be checked with monitoring function.
(Code: 01700 Service solenoid current)
• Method of reproducing failure code: Turn starting switch ON + Set in attachment mode (ATT).
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective service EPC sole-
noid (Internal disconnection)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
V30 (male) Resistance
Between (1) – (2) 7 – 14 z
2
Disconnection in wiring har-
ness (Disconnection in wiring
or defective contact in con-
nector)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CP02 (female) (97)
– V30 (female) (1)
Resis-
tance
Max. 1 z
Wiring harness between CP02 (female)
(115), (117), (120) – V30 (female) (2)
Resis-
tance
Max. 1 z
3 Defective pump controller
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CP02 (female) Resistance
Between (97) – (115), (117),
(120)
7 – 14 z

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English