Failure Code [Ca351] Inj. Drive Circuit Error; Troubleshooting - Komatsu Galeo PC138US-8 Shop Manual

40 Troubleshooting

Failure code [CA351] Inj. drive circuit error

User code Failure code
E10
Contents of
• Abnormality occurred in injector drive circuit.
trouble
Action of
• Limits output and continues operation (Limits common rail pressure).
controller
Problem that
appears on • Output drops.
machine
Related
• Method of reproducing failure code: Start engine.
information
1 Defective related system
2 Defective fuse
Defective power supply cut-
3
out relay
Possible causes
and standard
value in normal
state
Disconnection in wiring
harness
4 (Disconnection in wiring or
defective contact in connec-
tor)
PC138US, USLC-8
Trouble
CA351
Cause
Inj. drive circuit error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
If another failure code (code of abnormality in injector system) is
indicated, carry out troubleshooting for it.
Check fuse or circuit breaker on machine side directly for defect.
(If fuse is broken or circuit breaker is turned OFF, circuit probably
has ground fault.)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE02 (female) (55)
– (32)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Wiring harness between CE02 (female) (55)
– R23 (1)
Wiring harness between CE02 (female) (55)
– R24 (1)
Wiring harness between CE02 (female) (32)
– R23 (2)
Wiring harness between CE02 (female) (32)
– R24 (2)
Wiring harness between CE03 (female) (1)
– T12
Wiring harness between CE03 (female) (3)
– R23 (5)
Wiring harness between CE03 (female) (3)
– R24 (5)
Wiring harness between R23 (female) (3) –
battery (+)
Wiring harness between R24 (female) (3) –
battery (+)
SEN02464-01
1
Resis- 185 –
265 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
Resis-
Max. 1 z
tance
3