Komatsu 80001 User Manual

40 Troubleshooting SEN04119-01
PC130-8
19
Failure code [CA115] Eng Ne and Bkup speed sensor error 1
User code Failure code
Trouble
Eng Ne and Bkup speed sensor error
(Engine controller system)
E10 CA115
Contents of
trouble
• Abnormality occurred in Ne speed sensor circuit and Bkup speed sensor circuit simultaneously.
Action of
controller
• None in particular.
Problem that
appears on
machine
• Engine cannot be started (if engine has been stopped).
• Engine stops (if engine has been running).
Related
information
Possible causes
and standard
value in normal
state
Causes Standard value in normal state/Remarks on troubleshooting
1
Defective Ne speed sensor
system
Carry out troubleshooting for failure code [CA689].
2
Defective Bkup speed sen-
sor system
Carry out troubleshooting for failure code [CA778].
3
Defective mount of Ne speed
sensor
Check mount of Ne speed sensor directly for defect (defective
installation of sensor, indicator-ring of crankshaft, etc.)
4
Defective mount of Bkup
speed sensor
Check mount of Bkup speed sensor directly for defect (defective
installation of sensor, indicator-ring of crankshaft, etc.)
5
Defective connection (Wrong
connection)
Check Ne speed sensor and Bkup speed sensor directly for defec-
tive connection (wrong connection).
6 Defective engine controller
If causes 1 – 5 are not detected, engine controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)

Komatsu 80001 Specifications

General

Brand	Komatsu
Model	80001
Category	Excavators
Language	English