Failure Code [Da22Kk] Pump Solenoid Power Low Error - Komatsu Galeo PC800-8 Shop Manual

SEN00791-02

Failure code [DA22KK] Pump Solenoid Power Low Error

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