Failure Code [Dxe5Kb] Merge-Divider Main Sol Short - Komatsu PC210-8 Shop Manual

40 Troubleshooting

Failure code [DXE5KB] Merge-divider Main Sol Short

User code Failure code
— DXE5KB
Contents of
• When merge-divider main EPC solenoid was driven, short circuit was detected in circuit.
trouble
Action of • Turns output to merge-divider main EPC solenoid OFF.
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on
• Single operation speed of work equipment and swing is high in lifting mode (L).
machine
• Drive current of merge-divider main EPC solenoid can be checked with monitoring function.
Related infor-
(Code: 08000 merge-divider main EPC solenoid current)
mation
• Method of reproducing failure code: Turn starting switch ON.
Defective merge-divider
1 main EPC solenoid (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
Merge-divider main solenoid 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) (112)
– V23 (female) (1)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (112) – (115), (117),
Between (112) – chassis ground
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
V23 (male)
Between (1) – (2)
without turning starting switch ON.
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
21