Travel Alarm Does Not Sound Or Does Not Stop Sounding - Komatsu PC210-8 Shop Manual

UEN00244-02
E-22 Travel alarm does not sound or does not stop sounding
Trouble (1) Alarm does not sound during travel.
Related infor-
mation
1 Defective fuse No. 15
Defective travel signal sys-
2
tem
Possible causes
and standard
value in normal
Disconnection in wiring har-
state
ness (Disconnection in wiring
3
or defective contact in con-
nector)
Ground fault in wiring har-
4 ness (Short circuit with GND
circuit)
Defective travel alarm (Inter-
5
nal defect)
Trouble (2) Alarm does not stop sounding while machine is stopped.
Related infor-
mation
Defective travel signal sys-
1
tem
Possible causes
and standard
value in normal
state
Defective assembled-type
2 diode D05 (Short circuit with
GND circuit)
Ground fault in wiring har-
3 ness (Short circuit with GND
circuit)
48
Cause
If fuse is broken, circuit probably has ground fault. (See cause 4.)
a Start engine and carry out troubleshooting.
Monitoring code
Pressure switch 1
If display of monitoring is abnormal, carry out troubleshooting for
E-26 Monitoring function does not display lever control signal nor-
mally.
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between F01-15 – J03 – M14
(female) (1)
Wiring harness between M14 (female) (2) –
J01 (19) – P09 (female) (2)
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between F01-15 – J03 – M14
(female) (1), – circuit branch end
If causes 1 – 4 are not detected, travel alarm is defective.
Cause
a Start engine and carry out troubleshooting.
Monitoring code
Pressure switch 1
If display of monitoring is abnormal, carry out troubleshooting for E-
26 Monitoring function does not display lever control signal nor-
mally.
a Prepare with starting switch OFF, then carry out troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between M14 (female) (2) –
J01 (19) – P09 (female) (2), – D02 (female)
(4)
Standard value in normal state/Remarks on troubleshooting
01900
without turning starting switch ON.
without turning starting switch ON.
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
D02 (male)
Between (4) – (8)
without turning starting switch ON.
40 Troubleshooting
Item Normal display
When lever is
operated: ON
Travel
When lever is in
neutral: OFF
Resist-
ance
Resist-
ance
Resist-
ance
Item Normal display
When lever is oper-
ated: ON
Travel
When lever is in neu-
tral: OFF
Continuity
No continuity
Resist-
ance
PC210, 230, 240-8
1
Max. 1 z
Max. 1 z
Min. 1 Mz
Min. 1 Mz