Komatsu 80001 User Manual

SEN04121-02 40 Troubleshooting
40 PC130-8
Failure code [DWK0KA] 2-stage relief sol discon 1
User code Failure code
Trouble
2-stage relief solenoid disconnection
(Pump controller system)
— DWK0KA
Contents of
troubl
e
• When output to 2-stage relief solenoid is turned OFF, disconnection was detected in circuit.
Action of
control
ler
• None in particular. (Since no current flows, solenoid does not operate.)
• If cause of failure disappears, system resets itself.
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 mode other than (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 disconnection)
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
2
Disconnection in wiring har-
ness (Disconnection in wiring
or
defective contact in con-
nector)
a Prep
are with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CP02 (female)
(109) – V06 (female) (2)
Resis-
tance
Max. 1 z
Wiring harness between CP02 (female)
(1
15), (117), (120) – V06 (female) (1)
Resis-
tance
Max. 1 z
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

Komatsu 80001 Specifications

General

Brand	Komatsu
Model	80001
Category	Excavators
Language	English