Failure Code [Ca111] Ecm Critical Internal Failure - Komatsu Galeo PC138US-8 Shop Manual

SEN02463-01

Failure code [CA111] ECM critical internal failure

User code Failure code
E10
Contents of
• Abnormality occurred in controller.
trouble
Action of
• None in particular.
controller
Problem that
appears on • Engine runs normally but it may stop during operation or may not be able to start.
machine
Related
information
1 Defective fuse
Defective power supply cut-
2
out relay
Possible causes
and standard
value in normal
state
Disconnection in wiring
harness
3 (Disconnection in wiring or
defective contact in connec-
tor)
10
Trouble
CA111
Cause
ECM critical internal failure
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
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 (+)
40 Troubleshooting
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
PC138US, USLC-8