Komatsu 80001 User Manual

SEN04121-02 40 Troubleshooting
26 PC130-8
Failure code [DW43KA] Travel speed sol discon 1
Circuit diagram related
User code Failure code
Trouble
Travel speed solenoid system disconnection
(Pump controller system)
— DW43KA
Contents of
troubl
e
• When output to travel speed shifting solenoid was tu
rned ON, 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
a
ppears on
machine
• Speed is low at High travel speed position (Machine mo
nitor is set to High but actual speed is about
Middle).
Related
information
• Operating condition of travel speed shifting sole
noid can be checked with monitoring function. 
(Code: 02300 Solenoid 1)
• Method of reproducing failure code
: Start engine + Set travel speed to High + Operate travel lever.
Possible causes
and
standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective travel speed shift-
ing solenoid (Internal discon-
nection)
a Prep
are with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
V04 (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) (87)
– V04 (fe
male) (2)
Resis-
tance
Max. 1 z
Wiring harness between CP02 (female)
(1
15), (117), (120) – V04 (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 (87) – (115), (117),
(120)
20 – 60 z

Komatsu 80001 Specifications

General

Brand	Komatsu
Model	80001
Category	Excavators
Language	English