SEN04119-01 40 Troubleshooting
50 PC130-8
Failure code [CA331] Injector #2 (L #2) system open/short error 1
User code Failure code
Trouble
Injector #2 (L #2) system open/short error
(Engine controller system)
E11 CA331
Contents of
trouble
• There is disconnection or short circuit in injector #2 circuit.
Action of
controller
• None in particular.
Problem that
appears on
machine
• Output drops.
• Rotation is unstable.
Related
information
• Method of reproducing failure code: Start engine.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective injector #2 (Inter-
nal trouble)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
CN2 (male) Resistance
Between (1) – (2) 0.4 – 1.1 z
Between (1), (2) – chassis
ground
Min. 1 Mz
2
Disconnection in wiring har-
ness (Disconnection in wiring
or defective contact in con-
nector)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(45) – CN2 (female) (2)
Resis-
tance
Max. 1 z
Wiring harness between ENG1 (female)
(58) – CN2 (female) (1)
Resis-
tance
Max. 1 z
3
Ground fault in wiring har-
ness (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)
(45) – CN2 (female) (2) and chassis ground
Resis-
tance
Min. 1 Mz
Wiring harness between ENG1 (female)
(58) – CN2 (female) (1) and chassis ground
Resis-
tance
Min. 1 Mz
4
Defective injector or wiring
harness of another cylinder
If another failure code for injector abnormality is displayed, carry
out troubleshooting for it.
5 Defective engine controller
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
ENG1 (female) Resistance
Between (45) – (58) 0.4 – 1.1 z
Between (45), (58) – chassis
ground
Min. 1 Mz
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