Failure Code [Dxe0Kb] Ls-Epc Sol Short Circuit - Komatsu PC200-8M0 Shop Manual

SEN06137-00

Failure code [DXE0KB] LS-EPC Sol Short Circuit

Action
Failure code
level
L01 DXE0KB
q
Detail of failure When LS-PEC solenoid is driven, abnormal current flows and short circuit is detected.
q
Stops driving LS-EPC solenoid.
Action of con-
q
Even if cause of failure disappears, machine does not become normal until starting switch is turned
troller
to OFF position.
q
Problem on Travel speed is high with speed setting at Lo and Mi.
q
machine 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 short circuit or
ground fault)
Short circuit or ground fault
2
in wiring harness
Ground fault in wiring har-
3 ness
(contact with ground circuit)
4 Defective pump controller
26
40-305
LS-EPC Solenoid Short 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)
Between V19 (male) (2) and ground
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)
Between C02 (female) (88) and ground
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 either female
side.
Between C02 (female) (88) or V19 (female) (1) and
ground
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 [DXE0KB] LS-EPC Sol Short Circuit
Resistance
Resistance
Resistance
Resistance
Resistance
PC200, 200LC, 220, 220LC-8M0
3 to 14 z
Min. 1 Mz
3 to 14 z
Min. 1 Mz
Min. 1 Mz