Komatsu PC130-8 User Manual

40 Troubleshooting SEN04119-01
PC130-8
37
Circuit diagram related
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
5
Short circuit in wiring har-
ness
(With another wiring har-
ness)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(36) – PAMB (female) (3) and wiring har-
ness between ENG1 (female) (20) – PAMB
(female) (2)
Resis-
tance
Min. 1 Mz
Wiring harness between ENG1 (female)
(36) – PAMB (female) (3) and wiring har-
ness between ENG1 (female) (48) – PAMB
(female) (1)
Resis-
tance
Min. 1 Mz
Wiring harness between ENG1 (female)
(20) – PAMB (female) (2) and wiring har-
ness between ENG1 (female) (48) – PAMB
(female) (1)
Resis-
tance
Min. 1 Mz
6 Defective engine controller
a Prepare with starting switch OFF, then turn starting switch ON
or start engine and carry out troubleshooting.
ENG1 Voltage
Between (36) – (48) 4.75 – 5.25 V
Between (20) – (48) 0.3 – 4.7 V

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English