Travel Alarm Does Not Sound Or Does Not Stop Sounding - Komatsu Galeo PC800-8 Shop Manual

SEN00793-02
E-32 Travel alarm does not sound or does not stop sounding
Failure • Travel alarm does not sound or does not stop
phenomenon sounding.
Relative
information
1 Defective travel signal
Defective travel alarm
2
(Internal defect)
Possible causes
and standard
value in normal
state
Disconnection of wiring
harness
3
(Disconnection or defec-
tive contact with connector)
Short-circuiting of wiring
4 harness
(Contact with 24 V circuit)
5 Defective pump controller
66
Cause Standard value in normalcy and references for troubleshooting
aTurn the engine starting switch OFF for the preparations, and keep the
engine running during the troubleshooting.
Monitoring code
Pressure switch 2
Pressure switch 1
If the display on the monitor panel is abnormal, carry out troubleshooting
in "*** is not displayed normally in monitoring function".
aTurn the engine starting switch OFF for the preparations, and keep the
engine running during the troubleshooting.
M14 (female)
Between (1) – (2)
If the above voltages are normal and the travel alarm does not sound,
the travel alarm is defective.
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness between CP03 (female) (8) –
M14 (female) (1)
Wiring harness between M14 (female) (2) – J25 –
chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the ON position during the troubleshooting.
Between wiring harness between CP03
(female) (8) – M14 (female) (1) and chassis
ground
aTurn the engine starting switch OFF for the preparations, and keep the
engine running during the troubleshooting.
(8) – chassis ground
(1) The alarm does not sound while the machine is trav-
eling.
(2) The alarm sounds while the machine is stopped.
01901
Left travel
01900
Right travel
Travel lever
Neutral
Operated
CP03 Travel lever
Neutral
Between
Operated
40 Troubleshooting
Item Normal display
Lever operated: ON
Lever in neutral: OFF
Lever operated: ON
Lever in neutral: OFF
Voltage
Below 1 V
20 – 30 V
Resis-
tance
Resis-
tance
Voltage
Voltage
Max. 1 V
20 – 30 V
PC800, 850-8
Max. 1 z
Max. 1 z
Max. 1 V