Failure Code [Dxe0Ka] Ls-Epc Sol. Open Circuit - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02631-02

Failure code [DXE0KA] LS-EPC Sol. Open Circuit

Action code Failure code
— DXE0KA
Contents of
• No current flows to LS-EPC solenoid circuit.
trouble
Action of con- • None in particular. (Since no current flows, solenoid does not operate.)
troller • If cause of failure disappears, system resets itself.
Problem that
• Travel speed Mi or Lo is high.
appears on
• Speed of work equipment and swing is high in lifting mode (L).
machine
Related infor- • Output to LS-EPC solenoid (current value) can be checked with monitoring function.
mation (Code 01500: LS-EPC solenoid current)
Defective LS-EPC solenoid
1
(Internal disconnection)
Disconnection in wiring har-
ness
2 (Disconnection in wiring or
Possible causes
defective contact in connec-
and standard
tor)
value in normal
state
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
4 Defective pump controller
46
LS-EPC solenoid disconnection
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a
a
Wiring harness between CP02 (female) (88)
– V19 (female) (1)
Wiring harness between CP02 (female)
(115), (117), (120) – J05 and chassis ground
Wiring harness between S21 (6) – V19
(female) (2)
a
Wiring harness between CP02 (female) (88)
– V19 (female) (1) and chassis ground
a
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
V19 (male)
Between (1) – (2)
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CP02 (female)
Between (88) –
(115), (117), (120)
40 Troubleshooting
1
Resistance
7 – 14 z
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Min. 1 Mz
tance
Resistance
7 – 14 z
PC300, 350-8