22 PC800, 850-8
SEN00792-02 40 Troubleshooting
Failure code [DW41KA] Swing Priority Sol. Disc.
Action code Failure code
Trouble
Swing Priority Sol. Disc.
(Pump controller system)
— DW41KA
Contents of
trouble
• No current flows to the swing priority solenoid circuit, when power is supplied to the circuit.
Action of
controller
• None in particular (The solenoid does not function as there is no current flowing to it)
• When the failure cause disappears of itself, the machine operation returns to normalcy.
Problem that
appears on
machine
• When the boom is raised and the machine is swung simultaneously in the swing priority mode, the
swing speed is low (the oil flow in the swing circuit is kept low).
Related
information
• Operation of the swing priority solenoid (ON or OFF) can be checked in the monitoring function.
(Code No. 02300: Solenoid 1)
• Since the controller detects disconnection while the solenoid output is turned ON, be sure to turn the
solenoid output ON when checking the solenoid again after repairing it. (For how to turn power ON or
OFF, refer to the troubleshooting under failure code [DW41KB].)
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Swing priority solenoid
defective
(Internal disconnection)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
V14 (male) Resistance
Between (2) – (1) 20 – 60 z
2
Disconnection of wiring har-
ness
(Disconnection or defective
contact with connector)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness from CP03 (female) (38) – V14
(female) (2)
Resistance Max. 1 z
Wiring harness between V14 (female) (1) –
CP03 (female) (3), (13), (23)
Resistance Max. 1 z
3
Short-circuiting of wiring
harness
(Contact with 24 V circuit)
aTurn the engine starting switch OFF for the preparations, and hold it in
the ON position during the troubleshooting.
Between wiring harness between CP03
(female) (38) – V14 (female) (2) and grounding
Voltage Max. 1 V
CP03 (female) Resistance
Between (38) – chassis ground 20 – 60 z
To Next Page
Loading...
Need help?
General
