Code [111/Ca111] Engine Controller Internal Failure; Code [115/Ca115] Eng. Ne And Bkup Speed Sensor Error - Komatsu 114E-3 Series Shop Manual

40 Troubleshooting
Troubleshooting of electrical system (E-mode), Part 1
E-1 Code [111/CA111] Engine Controller Internal Failure
Error code Failure code
111
Contents of
• Abnormality occurred in memory of engine controller or power supply circuit.
trouble
Action of con-
• None in particular.
troller
Problem that
appears on • Engine stops during operations and engine cannot be started.
machine
Related infor-
mation
Possible causes
and standard
value in normal
1 Defective engine controller
state
E-2 Code [115/CA115] Eng. Ne and Bkup Speed Sensor Error
Error code Failure code
115
Contents of
• Abnormality occurred in signals of engine Ne speed sensor and engine Bkup speed sensor circuit.
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
114E-3 Series
Trouble
CA111
Causes
Trouble
CA115
Causes
Abnormality in engine Controller
Standard value in normal state/Remarks on troubleshooting
Carry out troubleshooting for failure code [CA757].
Abnormality in engine Ne, Bkup speed sensor
Standard value in normal state/Remarks on troubleshooting
Check Ne speed sensor and Bkup speed sensor directory for defec-
tive connection (wrong connection).
SEN00459-01
1
1
1
3