All Work Equipment, Swing And Travel Do Not Move - Komatsu Galeo PC800-8 Shop Manual

SEN00793-02
E-5 All work equipment, swing and travel do not move
Failure
• All the work equipment, swing and travel do not move.
phenomenon
Relative
information
1 Fuse No. 3 fault
Defective lock switch
2
(Internal disconnection)
PPC lock solenoid fault
(Internal disconnection,
3
short-circuiting, or ground-
ing fault)
Assembled-type diode D01
Possible causes
4 fault
and standard
(Internal short-circuiting)
value in normal
state
Disconnection of wiring
harness
5
(Disconnection or defec-
tive contact with connector)
Grounding fault of wiring
harness
6
(Contact with grounding
(GND) circuit)
18
Cause Standard value in normalcy and references for troubleshooting
If the fuse is blown, there is a big possibility that grounding fault
occurred in the circuit. (See Cause 6.)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
S14 (female)
Between (1) – (2)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Between (2) – chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness between FB1-3 outlet – S14
(male) (1)
Wiring harness from S14 (male) (2) – J04 – V01
(female) (2)
Wiring harness between V01 (female) (1) – J20 –
J19 – J25 – chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Between wiring harness between FB1-3 outlet –
S14 (male) (1) and chassis ground
Wiring harness from S14 (male) (2) – V01
(female) (2), or between wiring harness
between S14 (male) (2) – D01 (female) (4) and
chassis ground
Lock lever
Free
Lock
V01 (male)
Between (2) – (1)
D01 (male)
Between (4) – (8)
40 Troubleshooting
Resistance
Max. 1 z
Min. 1 Mz
Resistance
20 – 60 z
Min. 1 Mz
Resistance (Continuitiy)
Min. 1 Mz (No continuitiy)
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
PC800, 850-8