All Work Equipment, Swing, And Travel Mechanism Do Not Move Or Cannot Be Locked - Komatsu PC130-8 Shop Manual

SEN04123-01
E-6 All work equipment, swing, and travel mechanism do not move or
cannot be locked
Trouble (1) All work equipment, swing, and travel mechanism do not move.
Related
information
1 Defective fuse No. 3
Defective lock lever switch
2
(Internal disconnection)
Defective PPC lock solenoid
3 (Internal disconnection or
short circuit)
Defective assembled-type
Possible causes
4 diode D01 (Internal short cir-
and standard
cuit)
value in normal
state
Disconnection in wiring har-
ness (Disconnection in wiring
5
or defective contact in con-
nector)
Ground fault in wiring har-
6 ness (Short circuit with GND
circuit)
18
Cause Standard value in normal state/Remarks on troubleshooting
If fuse is broken, circuit probably has ground fault. (See cause 6.)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Between (1) – (2)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Between (2) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between F01-3 – S14 (male)
(1)
Wiring harness between S14 (male) (2) –
V01 (female) (2)
Wiring harness between V01 (female) (1) –
chassis ground (T10)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between F01-3 – S14 (male)
(1), – circuit branch end and chassis ground
Wiring harness between S14 (male) (2) –
V01 (female) (2), – D01 (female) (4) and
chassis ground
S14 (female) Lock lever
V01 (male)
Between (1) – (2)
D01 (male)
Between (4) – (8)
40 Troubleshooting
Resistance
Lock Min. 1 Mz
Max. 1 z
Free
Resistance
20 – 60 z
Min. 1 Mz
Resistance (Continuity)
Min. 1 Mz (No continuity)
Resis-
tance
Resis-
tance
Resis-
tance
Resis-
Min. 1 Mz
tance
Resis-
Min. 1 Mz
tance
1
Max. 1 z
Max. 1 z
Max. 1 z
PC130-8