Failure Code [Dwk0Ka] 2-Stage Relief Sol Discon - Komatsu PC210-8 Shop Manual

UEN00242-01

Failure code [DWK0KA] 2-stage Relief Sol Discon

User code Failure code
— DWK0KA
Contents of
• When output to 2-stage relief solenoid is turned OFF, disconnection was detected in circuit.
trouble
Action of • None in particular. (Since no current flows, solenoid does not operate.)
controller
• If cause of failure disappears, system resets itself.
Problem that
• Power maximizing function does not work.
appears on
• Travel power is low.
machine
• Operating condition of 2-stage relief solenoid can be checked with monitoring function.
Related infor-
(Code: 02300 Solenoid 1)
mation
• Method of reproducing failure code: Turn starting switch ON + Set machine in mode other than (L).
Defective 2-stage relief sole-
1
noid (Internal disconnection)
Possible causes
Disconnection in wiring har-
and standard
ness (Disconnection in wiring
2
value in normal
or defective contact in con-
state
nector)
3 Defective pump controller
44
2-stage relief solenoid disconnection
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (109)
– V02 (female) (1)
Wiring harness between C02 (female) (115),
(117), (120) – V02 (female) (2)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (109) – (115), (117),
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V02 (male)
Between (1) – (2)
without turning starting switch ON.
without turning starting switch ON.
C02 (female)
(120)
40 Troubleshooting
1
Resistance
20 – 60 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resistance
20 – 60 z
PC210, 230, 240-8