Failure Code [Dw45Kb] Swing Brake Sol Short - Komatsu PC210-8 Shop Manual

UEN00242-01

Failure code [DW45KB] Swing Brake Sol Short

User code Failure code
E03 DW45KB
Contents of
• When output to swing holding brake solenoid was turned ON, short circuit was detected in circuit.
trouble
Action of • Turns output to swing holding brake solenoid OFF.
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
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: Start engine + Swing with left work equipment control lever.
Defective swing holding
1 brake solenoid (Internal short
circuit or ground fault)
Ground fault in wiring har-
Possible causes
ness (Disconnection in wiring
and standard
2
or defective contact in con-
value in normal
nector)
state
3 Defective pump controller
36
Swing holding brake solenoid system short
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
Between (1) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (101)
– D01 – J02 – S04 – V03 (female) (1), – S25
(female) (14)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (101) –
(115), (117), (120)
Between (101) –
chassis ground
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V03 (male)
Between (1) – (2)
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
Min. 1 Mz
Resis-
tance
Resistance
20 – 60 z
directly.
Min. 1 Mz
PC210, 230, 240-8
1
Min. 1 Mz