Komatsu 80001 User Manual

40 Troubleshooting SEN04120-03
PC130-8
33
Failure code [CA2311] Abnormality in IMV solenoid 1
Circuit diagram related
User code Failure code
Trouble
Abnormality in IMV solenoid
(Engine controller system)
E11 CA2311
Contents of
trouble
• Resistance in supply pump actuator is abnormally high or low.
Action of
controller
• None in particular.
Problem that
appears
on machine
• Engine output drops.
Related
information
• Method of reproducing failure code: Start engine.
Possible
causes and
standard value
in normal state
Causes Standard value in normal state/Remarks on troubleshooting
1 Defective related system If another failure code is indicated, carry out troubleshooting for it.
2
Defective supply pump
actuator
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 (2) – chassis ground Min. 1 Mz
3
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
4
Ground fault in wiring harness
(Short circuit with GND circuit)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(14) – PREG (female) (2) and chassis
ground
Resis-
tance
Min.1 Mz
5 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) – chassis ground Min. 1 Mz

Komatsu 80001 Specifications

General

Brand	Komatsu
Model	80001
Category	Excavators
Language	English