Failure Code [Ca322] Injector #1 (L #1) System Open/Short Error - Komatsu PC130-8 Shop Manual

SEN04119-01

Failure code [CA322] Injector #1 (L #1) system open/short error

User code Failure code
E11
Contents of
• There is disconnection or short circuit in injector #1 circuit.
trouble
Action of
• None in particular.
controller
Problem that
• Output drops.
appears on
• Rotation is unstable.
machine
Related
• Method of reproducing failure code: Start engine.
information
Defective injector #1
1
(Internal trouble)
Disconnection in wiring har-
ness
2 (Disconnection in wiring or
defective contact in connec-
tor)
Possible causes
and standard
value in normal
state
Ground fault in wiring har-
ness
3
(Short circuit with GND cir-
cuit)
Defective injector or wiring
4
harness of another cylinder
5 Defective engine controller
46
Trouble
CA322
Causes
Injector #1 (L #1) system open/short 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.
CN1 (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)
(57) – CN1 (female) (2)
Wiring harness between ENG1 (female)
(53) – CN1 (female) (1)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between ENG1 (female)
(57) – CN1 (female) (2) and chassis ground
Wiring harness between ENG1 (female)
(53) – CN1 (female) (1) and chassis ground
If another failure code for injector abnormality is displayed, carry
out troubleshooting for it.
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
ENG1 (female)
Between (57) – (53)
Between (57), (53) – chassis
ground
40 Troubleshooting
1
Resistance
0.4 – 1.1 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
0.4 – 1.1 z
Min. 1 Mz
PC130-8