Failure Code [Ca111] Emc Critical Internal Failure; Failure Code [Ca115] Eng Ne And Bkup Speed Sens Error - Komatsu ecot3 PC300LC-8 Shop Manual

40 Troubleshooting

Failure code [CA111] EMC Critical Internal Failure

Action code Failure code
E10
Contents of
• Memory or power supply circuit in engine controller is defective.
trouble
Action of con-
• None in particular.
troller
Problem that
appears on • Engine does not start.
machine
Related infor-
mation
Possible causes
and standard
value in normal
1 Defective engine controller
state

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

Action code Failure code
E10
Contents of
• Both signals of engine Ne speed sensor and engine Bkup speed sensor are abnormal.
trouble
Action of con-
troller
Problem that
• Engine stops.
appears on
• Engine does not start.
machine
Related infor-
• Method of reproducing failure code: Start engine
mation
Possible causes
and standard
Defective connection of sen-
value in normal
1
sor connector
state
PC300, 350-8
Trouble
CA111
Cause
Trouble
CA115
Cause
EMC critical internal failure
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Engine controller may be defective. (Since trouble is in system, trou-
bleshooting cannot be carried out.)
Engine Ne and Bkup speed sensor error
(Engine controller system)
Standard value in normal state/Remarks on troubleshooting
Connectors of Ne speed sensor and Bkup speed sensor may be
connected defectively (or connected to wrong parts). Check them
directly.
SEN02629-03
1
1
19