Auto-Decelerator Does Not Operate Normally - Komatsu PC210-8 Shop Manual

UEN00244-02
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 go
Trouble
off.
Related infor-
• Condition of signal of auto-decelerator switch can be checked with monitoring function.
mation
(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 infor-
• Set speed of auto-decelerator is 1,400 rpm. If fuel control dial is not set above this speed, auto-
mation
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
34
Cause
Machine monitor may be defective. (Since trouble is in system,
troubleshooting cannot be carried out.)
Cause
a Start engine and carry out troubleshooting (with monitoring func-
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.)
Standard value in normal state/Remarks on troubleshooting
Standard value in normal state/Remarks on troubleshooting
tion).
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
PC210, 230, 240-8
1