Failure Code [Dxe5Kb] Merge-Divide Main Sol Short Circuit - Komatsu PC200-8M0 Shop Manual

SEN06137-00

Failure code [DXE5KB] Merge-divide Main Sol Short Circuit

Action
Failure code
level
L01 DXE5KB
q
When pump merge-divider (main) EPC solenoid is driven, abnormal current flows and short circuit
Detail of failure
is detected.
q
Stops outputting current to merge-divider (main) EPC solenoid. (Since no current flows, merge-
divider LS solenoid does not operate, either.)
Action of con-
q
troller Even if cause of failure disappears, machine does not become normal until starting switch is turned
to OFF position.
q
Problem on Single operation speed of work equipment and swing is high in fine control mode (L).
q
machine Machine does not turn easily during travel.
q
Drive current to merge-divider main EPC solenoid can be checked with monitoring function.
Related infor-
(Code: 08000 Merge-divider (main) solenoid current)
mation
q
Method of reproducing failure code: Turn starting switch to ON position.
Cause
Defective merge-divider main EPC
1 solenoid (internal short circuit or
ground fault)
Short circuit or ground fault in wir-
2
ing harness
Ground fault in wiring harness
3
(contact with ground circuit)
4 Defective pump controller
34
40-305
Failure code [DXE5KB] Merge-divide Main Sol Short Circuit
Merge-divide Main Solenoid Short Circuit
Failure
(Pump controller system)
Procedure, measuring location, criteria and remarks
1. Turn starting switch to OFF position.
2. Disconnect connector V23, and connect T-adapters to male side.
Between V23 (male) (1) and (2)
Between V23 (male) (1) and ground
1. Turn starting switch to OFF position.
2. Disconnect connector C02 and connect T-adapters to female side.
Between C02 (female) (112) and each of (115),
(117) and (120)
Between C02 (female) (112) 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 V23, and connect T-adapters to either
female side.
Between C02 (female) (112) or V23 (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
Resistance
Resistance Min. 1 Mz
Resistance
Resistance Min. 1 Mz
Resistance Min. 1 Mz
PC200, 200LC, 220, 220LC-8M0
3 to 14 z
3 to 14 z