Failure Code [Dw43Kb] Travel Speed Sol. S/C - Komatsu Galeo PC800-8 Shop Manual

SEN00792-02

Failure code [DW43KB] Travel Speed Sol. S/C

Action code Failure code
— DW43KB
Contents of
• Abnormal current flowed at output to travel speed solenoid circuit.
trouble
Action of • Turns output to travel speed solenoid circuit OFF.
controller • Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
• Travel speed is not set to Hi (Swash plate angle of travel motor is not minimized).
appears on
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
machine
• The travel speed shifting solenoid is not turned ON when the engine speed is below 1,200 rpm.
Related
• Operation of the travel speed solenoid (ON or OFF) can be checked in the monitoring function.
information
(Code No. 02300: Solenoid 1)
Travel Speed Sol. Disc.
1 (Internal short circuit or
ground fault)
Possible causes
Ground fault in wiring har-
and standard
ness
value in normal
2
(Short circuit with GND cir-
state
cuit)
3 Defective pump controller
28
Travel Speed Sol. S/C
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Between (2) – chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CP03 (female) (27) –
V04 (female) (2) and chassis ground
aPrepare with starting switch OFF, then start engine and carry out trou-
bleshooting.
Between (27) –
chassis ground
V04 (male)
Between (2) – (1)
CP03 Travel speed
Lo
40 Troubleshooting
Resistance
20 – 60 z
Min. 1 Mz
Resistance Min. 1 Mz
Voltage
Max. 1 V
Hi 20 – 30 V
PC800, 850-8