Failure Code [Ca272] Imv/Pcv1 Open Error - Komatsu PC130-8 Shop Manual

40 Troubleshooting

Failure code [CA272] IMV/PCV1 open error

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