Failure Code [Ca115] Eng Ne And Bkup Speed Sens Error - Komatsu Galeo PC800-8 Shop Manual

SEN00790-02

Failure code [CA115] Eng Ne and Bkup Speed Sens Error

Action code Failure code
E10 CA115
Contents of
• Failure occurred simultaneously in engine Ne speed sensor and engine Bkup speed sensor.
trouble
Action of
• None in particular.
controller
Problem that
• Engine cannot be started. (Engine is stopped.)
appears on
• Engine stops (during operations).
machine
Related
information
Defective Ne speed sen-
1
sor system
Defective Bkup speed sen-
2
sor system
Defective installation of Ne
Possible causes 3
speed sensor
and standard
value in normal
Defective installation of
4
state
Bkup speed sensor
Defective connection of
5 sensor connector (Wrong
connection)
6 Defective engine controller
18
Eng Ne and Bkup Speed Sens Error
Trouble
(Engine controller system)
Cause Standard value in normal state/Remarks on troubleshooting
Carry out troubleshooting for failure code [CA689].
Carry out troubleshooting for failure code [CA778].
Ne speed sensor may be installed defectively. Check it directly. (Defec-
tive installation of sensor itself, internal defect of flywheel, etc.)
Bkup speed sensor may be installed defectively. Check it directly.
(Defective installation of sensor itself, internal defect of supply pump,
etc.)
Ne speed sensor and Bkup speed sensor may be connected defectively
(or connected to wrong parts). Check them directly.
If causes 1 – 5 are not detected, engine controller may be defective. (Since
trouble is in system, troubleshooting cannot be carried out.)
40 Troubleshooting
PC800, 850-8