Failure Code [Dxe0Ka] Ls-Epc Sol Open Circuit - Komatsu PC200-8M0 Shop Manual

SEN06137-00

Failure code [DXE0KA] LS-EPC Sol Open Circuit

Action
Failure code
level
L01 DXE0KA
q
Detail of failure When LS-EPC solenoid is driven, no current flows and open circuit is detected.
q
Action of con- None in particular (Since no current flows, solenoid is not energized.)
q
troller If cause of failure disappears, machine becomes normal by itself.
q
Problem on Travel speed is high with speed setting at Lo and Mi.
machine q Work equipment speed and swing speed are high in fine control mode (L).
q
Drive current to LS-EPC solenoid can be checked with monitoring function.
Related infor-
(Code: 01500 LS-EPC solenoid current)
mation
q
Method of reproducing failure code: Turn starting switch to ON position.
Cause
Defective LS-EPC solenoid
1
(Internal open circuit)
Open or short circuit in wiring har-
2
ness
Open circuit in wiring harness
3 (wire breakage or defective con-
tact of connector)
4 Defective pump controller
24
40-305
LS-EPC Solenoid Open Circuit
Failure
(Pump controller system)
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Disconnect connector V19, and connect T-adapters to male side.
Between V19 (male) (1) and (2)
1. Turn starting switch to OFF position.
2. Disconnect connector C02 and connect T-adapters to female side.
Between C02 (female) (88) and each of (115), (117)
and (120)
a If no failure is found by check on cause 2, this check is not required.
1. Turn starting switch to OFF position.
2. Disconnect connectors C02 and V19, and connect T-adapters to each
female side.
Between C02 (female) (88) and V19 (female) (1)
Between V19 (female) (2) and each of C02 (female)
(115), (117) and (120)
If no failure is found by above checks, pump controller is defective. (Since this
is an internal defect, troubleshooting cannot be performed.)
305 Troubleshooting by failure code, Part 5
Failure code [DXE0KA] LS-EPC Sol Open Circuit
Resistance
Resistance
Resistance
Resistance
PC200, 200LC, 220, 220LC-8M0
3 to 14 z
3 to 14 z
Max. 1 z
Max. 1 z