Komatsu PC130-8 User Manual

SEN04121-02 40 Troubleshooting
42 PC130-8
Failure code [DWK0KB] 2-stage relief sol short 1
User code Failure code
Trouble
2-stage relief solenoid short
(Pump controller system)
— DWK0KB
Contents of
troubl
e
• When output to 2-stage relief solenoid is turned ON, short circuit was detected in circuit.
Action of
control
ler
• Turns output to 2-stage relief solenoid OFF.
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
a
ppears on
machine
• Power maximizing function does not work.
• Travel power is low.
Related
information
• Operating condition of 2-stage relief solenoid can be
checked with monitoring function. 
(Code: 02300 Solenoid 1)
• Method of reproducing failure code: Turn starting switch ON + Set
machine in working mode (L).
Possible causes
and
standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective 2-stage relief sole-
noid (Internal short circuit or
ground fault)
a Prep
are with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
V06 (male) Resistance
Between (1) – (2) 20 – 60 z
Between (2) – chassis ground Min. 1 Mz
2
Ground fault in wiring har-
ness (Short circuit with GND
circuit)
a Prep
are with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CP02 (female)
(109) – V0
6 (female) (2) and chassis ground
Resis-
tance
Min. 1 Mz
3 Defective pump controller
a Prep
are with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CP02 (female) Resistance
Between (109) – (115), (117),
(120)
20 – 60 z
Between (109) – chassis ground Min. 1 Mz

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English