Komatsu Galeo PC800-8 User Manual

58 PC800, 850-8
SEN00791-02 40 Troubleshooting
Failure code [DA22KK] Pump Solenoid Power Low Error
Action code Failure code
Trouble
Pump Solenoid Power Low Error
(Pump controller system)
E0E DA22KK
Contents of
trouble
• Pump controller solenoid power supply voltage is below 20 V.
Action of
controller
• Limits engine speed to 1,400 rpm.
Problem that
appears on
machine
• If solenoid power supply voltage lowers extremely, work equipment, swing system and travel system
do not operate.
• Engine speed does not rise above 1,400 rpm.
• Hydraulic fan cannot be rotated in reverse.
Related
information
• If D110KB is displayed, carry out troubleshooting for it first.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective circuit breaker
No. 4
If circuit breaker No. 4 is turned OFF, circuit probably has ground fault
etc. (See cause 3.)
2
Disconnection in wiring har-
ness (Disconnection in wir-
ing or defective contact in
connector)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CP03 (female) (2),
(12), (22) – J07 (female) (2), (3), (4)
Resis-
tance
Max. 1 z
Wiring harness between J07 (female) (1) – B24
Resis-
tance
Max. 1 z
Wiring harness between battery relay terminal
M – B14
Resis-
tance
Max. 1 z
Wiring harness between starting switch termi-
nal BR – battery relay terminal BR
Resis-
tance
Max. 1 z
Wiring harness between CP03 (female) (31),
(32), (33) – J08 – ground
Resis-
tance
Max. 1 z
3
Ground fault in wiring har-
ness (Contact with GND cir-
cuit)
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CP03 (female) (2),
(12), (22) – J07 (female) (2), (3), (4) – ground
Resis-
tance
Min. 1 Mz
Wiring harness between J07 (female) (1) – B24
– ground
Resis-
tance
Min. 1 Mz
Wiring harness between battery relay terminal
M – B14 – ground
Resis-
tance
Min. 1 Mz
4 Defective pump controller
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Between CP03 (2), (12), (22) – (31), (32) (33) Voltage 20 – 30 V

Komatsu Galeo PC800-8 Specifications

General

Brand	Komatsu
Model	Galeo PC800-8
Category	Excavators
Language	English