Failure Code [Dxe0Kb] Ls-Epc Sol Short - Komatsu PC210-8 Shop Manual

40 Troubleshooting

Failure code [DXE0KB] LS-EPC Sol Short

User code Failure code
— DXE0KB
Contents of
• When LS-EPC solenoid was driven, short circuit was detected in circuit.
trouble
Action of • Turns output to LS-EPC solenoid OFF.
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
• Travel speed is high at Lo and Mi.
appears on
• Work equipment speed and swing speed are high in lifting mode (L).
machine
• Drive current of LS-EPC solenoid can be checked with monitoring function.
Related infor-
(Code: 01500 LS-EPC solenoid current)
mation
• Method of reproducing failure code: Turn starting switch ON.
Defective LS-EPC solenoid
1 (Internal short circuit 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
PC210, 230, 240-8
LS-EPC solenoid system short
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
Between (1) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (88) –
a Prepare with starting switch OFF, then carry out troubleshooting
Between (88) – (115), (117),
Between (88) – chassis ground
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V19 (male)
Between (1) – (2)
without turning starting switch ON.
V19 (female) (1)
without turning starting switch ON.
C02 (female)
(120)
UEN00243-01
1
Resistance
7 – 14 z
Min. 1 Mz
Resis-
Min. 1 Mz
tance
Resistance
7 – 14 z
Min. 1 Mz
13