Komatsu 80001 User Manual

40 Troubleshooting SEN04119-01
PC130-8
45
Failure code [CA272] IMV/PCV1 open error 1
Circuit diagram related
User code Failure code
Trouble
IMV/PCV1 open error
(Engine controller system)
E10 CA272
Contents of
trouble
• There is disconnection in IMV circuit of supply pump.
Action of
controller
• None in particular.
Problem that
appears on
machine
Related
information
• Method of reproducing failure code: Turn starting switch ON.
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1
Defective supply pump IMV
(Internal disconnection)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
PREG (male) Resistance
Between (1) – (2) 2.3 – 5.3 z
Between (1), (2) – chassis
ground
Min. 1 Mz
2
Disconnection in wiring har-
ness
(Disconnection in wiring or
defective contact in connec-
tor)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(10) – PREG (female) (1)
Resis-
tance
Max. 1 z
Wiring harness between ENG1 (female)
(14) – PREG (female) (2)
Resis-
tance
Max. 1 z
3
Ground fault in wiring har-
ness
(Short circuit with GND cir-
cuit)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female) (10)
– PREG (female) (1) and chassis ground
Resis-
tance
Min. 1 Mz
Wiring harness between ENG1 (female) (14)
– PREG (female) (2) and chassis ground
Resis-
tance
Min. 1 Mz
4 Defective engine controller
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
ENG1 (female) Resistance
Between (10) – (14) 2.3 – 5.3 z
Between (10) (14) – chassis
ground
Min. 1 Mz

Komatsu 80001 Specifications

General

Brand	Komatsu
Model	80001
Category	Excavators
Language	English