SEN04119-01 40 Troubleshooting
40 PC130-8
Failure code [CA234] Eng. overspeed 1
User code Failure code
Trouble
Eng. overspeed
(Engine controller system)
— CA234
Contents of
trouble
• Engine speed is above operating range.
Action of
controller
• Limits fuel injection rate until engine speed lowers to operating range.
Problem that
appears on
machine
• Engine speed fluctuates.
Related
information
• Engine speed can be checked with monitoring function.
(Code: 01002 Engine speed)
• Method of reproducing failure code: Run engine at high idle.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1 Defective related system If another failure code is indicated, carry out troubleshooting for it.
2 Improper way of use Way of use may be improper. Teach proper way of use to operator.
3 Defective engine controller
If causes 1 and 2 are not detected, engine controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
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