Auto-Decelerator Does Not Operate Normally - Komatsu Galeo PC138US-8 Shop Manual

SEN02467-00
E-15 Auto-decelerator does not operate normally
(1) When auto-decelerator switch is operated, auto-decelerator monitor does not light up or does not
Trouble
go off.
Related • Condition of signal of auto-decelerator switch can be checked with monitoring function.
information (Code: 04504 Monitor 1st, 2nd line switches)
Possible causes
and standard
value in normal
1 Defective machine monitor
state
Trouble (2) Auto-decelerator is not operated or reset with lever.
Related • Set speed of auto-decelerator is 1,400 rpm. If fuel control dial is not set above this speed, auto-
information decelerator is not operated or reset.
Defective PPC pressure sig-
1
nal
Possible causes
and standard
value in normal
state
2 Defective machine monitor
3 Defective pump controller
4 Defective engine controller
28
Cause Standard value in normal state/Remarks on troubleshooting
Machine monitor may be defective. (Since trouble is in system,
troubleshooting cannot be carried out.)
Cause Standard value in normal state/Remarks on troubleshooting
a Start engine and carry out troubleshooting (with monitoring
Monitoring code
Pressure switch 1
Pressure switch 2
If display of monitoring is abnormal, carry out troubleshooting for
E-26 Monitoring function does not display lever control signal nor-
mally.
If cause 1 is not detected, machine monitor may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
If cause 1 is not detected, pump controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
If cause 1 is not detected, engine controller may be defective.
(Since trouble is in system, troubleshooting cannot be carried out.)
function).
Boom lower
01900
Boom raise
Arm dump
Bucket curl
01901
Bucket dump
40 Troubleshooting
Item Normal display
Swing
Travel
When lever is
operated: ON
When lever is in
neutral: OFF
Arm curl
When lever is
operated: ON
When lever is in
Service
neutral: OFF
PC138US, USLC-8
1