Failure Code [Dxa8Ka] Pc-Epc (F) Sol Discon - Komatsu PC210-8 Shop Manual

40 Troubleshooting
Troubleshooting by failure code (Display of code), Part 4

Failure code [DXA8KA] PC-EPC (F) Sol Discon

User code Failure code
E02 DXA8KA
Contents of
• When PC-EPC (F) 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 (F) solenoid can be checked with monitoring function.
Related infor-
(Code: 01300 PC-EPC solenoid current (F))
mation
• Method of reproducing failure code: Turn starting switch ON.
Defective PC-EPC (F) sole-
1
noid (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
PC210, 230, 240-8
PC-EPC (F) solenoid system disconnection
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
Between (3) – (2)
Between (6) – (5)
a Prepare with starting switch OFF, then carry out troubleshooting
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 troubleshooting
Between (96) – (115), (117),
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V11 (male)
Between (1) – (2)
without turning starting switch ON.
Emergency pump
S25 (male)
drive switch
Emergency
Emergency
without turning starting switch ON.
without turning starting switch ON.
C02 (female)
(120)
UEN00243-01
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
1
1
Max. 1 z
Max. 1 z
Max. 1 z
Max. 1 z
3