Failure Code [Dw45Ka] Swing Brake Sol Discon - Komatsu PC210-8 Shop Manual

UEN00242-01

Failure code [DW45KA] Swing Brake Sol Discon

User code Failure code
E03 DW45KA
Contents of
• When output to swing holding brake solenoid was 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
appears on
• Machine cannot swing (Swing holding brake is not reset).
machine
• If solenoid and wiring harness are normal, operator can swing machine by setting swing holding
brake release switch in release position (Swing holding brake does not work, however, when
machine stops).
Related infor- • Keep swing lock switch in OFF position and swing holding brake release switch in release position
mation during troubleshooting.
• Operating condition of swing holding brake solenoid can be checked with monitoring function.
(Code: 02300: Solenoid 1)
• Method of reproducing failure code: Turn starting switch ON.
Defective swing holding
1 brake solenoid (Internal dis-
connection)
Defective assembled-type
2 diode D01 (Internal discon-
nection)
Defective swing lock switch
3
(Internal disconnection)
Possible causes
and standard
value in normal
state
Disconnection in wiring har-
ness (Disconnection in wiring
4
or defective contact in con-
nector)
5 Defective pump controller
34
Swing holding brake solenoid system 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
Between (7) – (3)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (3) – (4)
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (101)
– D01 (female) (7)
Wiring harness between D01 (female) (3) –
J02 – S04 (female) (3)
Wiring harness between S04 (female) (4) –
V03 (female) (1)
Wiring harness between C02 (female) (115),
(117), (120) – V03 (female) (2)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (101) –
(115), (117), (120)
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V03 (male)
Between (1) – (2)
without turning starting switch ON.
D01 (male) Digital circuit tester
Diode mode
without turning starting switch ON.
S04 (male) Swing lock switch
without turning starting switch ON.
without turning starting switch ON.
C02 (female) Disconnect D01 and
connect pins (3) and
(7) on female side
40 Troubleshooting
Resistance
20 – 60 z
Continuity
There is continuity
Resistance
Max. 1 z
OFF
ON Min. 1 Mz
Resis-
tance
Resis-
tance
Resis-
tance
Resis-
tance
Resistance
20 – 60 z
directly.
PC210, 230, 240-8
1
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z