Komatsu Galeo PC800-8 User Manual

50 PC800, 850-8
SEN00792-02 40 Troubleshooting
Failure code [DXAAKA] F Pump EPC Sol. Disc.
Action code Failure code
Trouble
F Pump EPC Sol. Disc.
(Pump controller system)
E02 DXAAKA
Contents of
trouble
• When main pump EPC (F) solenoid was energized, disconnection was detected in solenoid.
Action of
controller
• Minimizes deliveries of both F and R pumps if trouble occurs during travel.
• Turns “straight travel solenoid” ON, once lever is set in neutral.
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on
machine
• Travel speed and work equipment speed lower.
Related
information
• Current to energize main pump EPC (F) solenoid can be checked with monitoring function.
(Code: 01300 Main pump EPC (F) solenoid current)
• Method of reproducing failure code: Turn starting switch ON.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective main pump EPC
(F) solenoid (Internal dis-
connection)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
V11 (male) Resistance
Between (1) – (2) 7 – 14 z
2
Defective emergency pump
drive switch (Internal dis-
connection)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
S25 (male)
Emergency pump drive
switch
Resistance
Between (3) – (2)
Normal Max. 1 z
Emergency Min. 1 Mz
Between (6) – (5)
Normal Max. 1 z
Emergency Min. 1 Mz
3
Disconnection in wiring har-
ness
(Disconnection in wiring or
defective contact in connec-
tor)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CP03 (female) (6) –
S25 (female) (3)
Resistance Max. 1 z
Wiring harness between S25 (female) (2) – V11
(female) (1)
Resistance Max. 1 z
Wiring harness between CP03 (female) (3),
(13), (23) – J08 – S25 (female) (6)
Resistance Max. 1 z
Wiring harness between S25 (female) (5) – V11
(female) (2)
Resistance Max. 1 z
4 Defective pump controller
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
CP03 (female) Resistance
Between (6) – (3), (13), (23) 7 – 14 z

Komatsu Galeo PC800-8 Specifications

General

Brand	Komatsu
Model	Galeo PC800-8
Category	Excavators
Language	English