Failure Code [989L00] Engine Controller Lock Caution 1; Failure Code [989M00] Engine Controller Lock Caution 2 - Komatsu Galeo PC138US-8 Shop Manual

40 Troubleshooting

Failure code [989L00] Engine controller lock caution 1

User code Failure code
—
Contents of
• Engine controller lock is detected (Factor 1).
trouble
Action of • None in particular.
machine monitor • If cause of failure disappears, system resets itself.
Problem that
appears on • Engine cannot be started.
machine
• If this failure code is displayed after machine monitor is replaced, user password must be changed
Related
to one before replacement.
information
• Method of reproducing failure code: Turn starting switch ON.
Possible causes
and standard
Replacement of machine
value in normal
1
monitor
state

Failure code [989M00] Engine controller lock caution 2

User code Failure code
—
Contents of
• Engine controller lock is detected (Factor 2).
trouble
Action of • None in particular.
machine monitor • If cause of failure disappears, system resets itself.
Problem that
appears on • Engine cannot be started.
machine
• If this failure code is displayed after machine monitor is replaced, user password must be changed
Related
to one before replacement.
information
• Method of reproducing failure code: Turn starting switch ON.
Possible causes Replacement of machine
1
and standard monitor
value in normal
state
2 Defective machine monitor
PC138US, USLC-8
Trouble
989L00
Cause
Trouble
989M00
Cause
Engine controller lock caution 1
(Machine monitor system)
Standard value in normal state/Remarks on troubleshooting
This trouble may be caused by replacement of machine monitor.
Engine controller lock caution 2
(Machine monitor system)
Standard value in normal state/Remarks on troubleshooting
This trouble may be caused by replacement of machine monitor.
If this failure code is displayed while machine monitor is not
replaced, machine monitor may be defective. (Since trouble is in
system, troubleshooting cannot be carried out.)
SEN02463-01
1
1
3