Failure Code [Da25Kp] 5V Sensor 1 Power Abnormality; Overload Alarm Monitor Non-Display Specification - Komatsu PC210-8 Shop Manual

40 Troubleshooting

Failure code [DA25KP] 5V Sensor 1 Power Abnormality

Overload alarm monitor non-display specification

User code Failure code
— DA25KP
Contents of
• Voltage of 5V sensor power supply output 1 circuit is below 2.5 V or above 6.0 V.
trouble
Action of • Turns output of 5V sensor power supply output 1 OFF.
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
• Automatic gear shifting function does not work (pump pressure sensor system).
appears on
• Fine control performance of work equipment lowers (PPC pressure sensor system).
machine
Related infor-
• Method of reproducing failure code: Turn starting switch ON.
mation
Defective pressure sensor
1
(Internal short circuit)
Possible causes
and standard
value in normal
state
Ground fault in wiring har-
2 ness (Short circuit with GND
circuit)
PC210, 230, 240-8
5V sensor power supply output 1 abnormality
Trouble
(Pump controller system)
Cause
a Disconnect connector with starting switch OFF, then turn starting
Disconnect sensors at right in
order and carry out operation to
reproduce trouble. If "E" of failure
code goes off when a sensor is
disconnected, that sensor is
defective.
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C01 (female) (9) –
J06 – P01 (female) (3)
[Bucket CURL PPC pressure sensor system]
Wiring harness between C01 (female) (9) –
J06 – P03 (female) (3)
[Swing LEFT PPC pressure sensor system]
Wiring harness between C01 (female) (9) –
J06 – P04 (female) (3)
[Arm IN PPC pressure sensor system]
Wiring harness between C01 (female) (9) –
P05 (female) (3)
[Bucket DUMP PPC pressure sensor sys-
tem]
Wiring harness between C01 (female) (9) –
J06 – P06 (female) (3)
[Boom RAISE PPC pressure sensor system]
Standard value in normal state/Remarks on troubleshooting
switch ON and carry out troubleshooting.
without turning starting switch ON.
UEN00241-01
Bucket CURL PPC
pressure sensor
Swing LEFT PPC
pressure sensor
Arm IN PPC pressure
sensor
Bucket DUMP PPC
pressure sensor
Boom RAISE PPC
pressure sensor
Swing RIGHT PPC
pressure sensor
F pump pressure
sensor
R pump pressure
sensor
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
1
P01
P03
P04
P05
P06
P07
P25
P26
51