Failure Code [Dwj0Ka] Merge-Divider Sol Discon - Komatsu Galeo PC138US-8 Shop Manual

SEN02465-01

Failure code [DWJ0KA] Merge-divider sol discon

User code Failure code
— DWJ0KA
Contents of
• When merge-divider EPC solenoid was driven, 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 • Single operation speed of work equipment and swing is high in lifting mode (L).
machine
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Defective merge-divider EPC
1 solenoid (Internal disconnec-
tion)
Possible causes
Disconnection in wiring har-
and standard
ness (Disconnection in wiring
2
value in normal
or defective contact in con-
state
nector)
3 Defective pump controller
Circuit diagram related
38
Merge-divider solenoid disconnection
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between C02 (female) (112)
– V05 (female) (2)
Wiring harness between C02 (female) (115),
(117), (120) – V05 (female) (1)
a Prepare with starting switch OFF, then carry out troubleshoot-
Between (112) – (115), (117),
ing without turning starting switch ON.
V05 (male)
Between (1) – (2)
ing without turning starting switch ON.
ing without turning starting switch ON.
C02 (female)
(120)
40 Troubleshooting
1
Resistance
7 – 14 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resistance
7 – 14 z
PC138US, USLC-8