Failure Code [Dw91Kb] Travel Junction Sol Short - Komatsu Galeo PC138US-8 Shop Manual

40 Troubleshooting

Failure code [DW91KB] Travel junction sol short

User code Failure code
— DW91KB
Contents of
• When output to travel junction solenoid was turned ON, short circuit was detected in circuit.
trouble
Action of • Turns output to travel junction 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 is not steered easily during travel.
machine
• Operating condition of travel junction solenoid can be checked with monitoring function.
Related
(Code: 02300 Solenoid 1)
information
• Method of reproducing failure code: Start engine + Steer machine with right and left travel levers.
Defective travel junction
1 solenoid (Internal short cir-
cuit or ground fault)
Possible causes
Ground fault in wiring har-
and standard
2 ness (Short circuit with GND
value in normal
circuit)
state
3 Defective pump controller
Circuit diagram related
PC138US, USLC-8
Travel junction solenoid system short
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
Between (2) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between C02 (female) (110)
– V04 (female) (2)
a Prepare with starting switch OFF, then carry out troubleshoot-
Between (110) – (115), (117),
Between (110) – chassis ground
ing without turning starting switch ON.
V04 (male)
Between (1) – (2)
ing without turning starting switch ON.
ing without turning starting switch ON.
C02 (female)
(120)
SEN02465-01
1
Resistance
20 – 60 z
Min. 1 Mz
Resis-
Min. 1 Mz
tance
Resistance
20 – 60 z
Min. 1 Mz
37