Failure Code [Dxa8Ka] Pc-Epc Sol Discon - Komatsu Galeo PC138US-8 Shop Manual

SEN02466-00

Failure code [DXA8KA] PC-EPC sol discon

User code Failure code
E02 DXA8KA
Contents of
• When PC-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 • If pump load increases, engine speed lowers largely and engine may stall.
machine
• Drive current of PC-EPC solenoid can be checked with monitoring function.
Related
(Code: 01300 PC-EPC solenoid current)
information
• Method of reproducing failure code: Turn starting switch ON.
Defective PC-EPC solenoid
1
(Internal disconnection)
Defective emergency pump
2 drive switch (Internal discon-
nection)
Possible causes
and standard
value in normal
state
Disconnection in wiring har-
ness (Disconnection in wiring
3
or defective contact in con-
nector)
4 Defective pump controller
2
PC-EPC solenoid system 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-
Between (3) – (2)
Between (6) – (5)
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between C02 (female) (96)
– S25 (female) (3)
Wiring harness between S25 (female) (2) –
V11 (female) (1)
Wiring harness between C02 (female) (115),
(117), (120) – S25 (female) (6)
Wiring harness between S25 (female) (5) –
V11 (female) (2)
a Prepare with starting switch OFF, then carry out troubleshoot-
Between (96) – (115), (117),
ing without turning starting switch ON.
V11 (male)
Between (1) – (2)
ing without turning starting switch ON.
Emergency pump
S25 (male)
drive switch
Emergency
Emergency
ing without turning starting switch ON.
ing without turning starting switch ON.
C02 (female)
(120)
40 Troubleshooting
Resistance
7 – 14 z
Resistance
Max. 1 z
Normal
Min. 1 Mz
Max. 1 z
Normal
Min. 1 Mz
Resis-
tance
Resis-
tance
Resis-
tance
Resis-
tance
Resistance
7 – 14 z
PC138US, USLC-8
1
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z