Komatsu PC200-8M0, Shop Manual

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400 Troubleshooting of electrical system (E-mode)
E-5 Precaution monitor lights up while engine is running
40-400
22
PC200, 200LC, 220, 220LC-8M0
SEN06138-00
Failure 5) Air cleaner clogging monitor lights up in yellow.
Related information
q Air cleaner clogging switch signal can be checked with monitoring function.
(Code: 04501 Monitor input 2)
Cause Procedure, measuring location, criteria and remarks
1
Clogging of air cleaner
(when system works properly)
Air cleaner may be clogged. Check it, then clean or replace if necessary.
2
Defective air cleaner clogging
switch system
Perform troubleshooting for failure code [ AA10NX ].
Failure
6) Engine state monitor light up in yellow because of water separator sensor detection. (high
water level in water separator)
Related information
q Signal of water detection by fuel filter sensor can be checked with monitoring function.
(Code: 18800 Condition of WIF sensor)
Cause Procedure, measuring location, criteria and remarks
1
High water level in water separator
(when system works properly)
Full of water is detected in water separator. Check and drain water separator.
2
Defective water-in-fuel sensor
system (engine controller circuit) If no failure is found by check on cause 1, water-in-fuel sensor system may be
defective. Perform troubleshooting for failure codes [
CA428 ] and [ CA429 ]
3 Defective machine monitor
If no failure is found by checks on causes 1 and 2, machine monitor may be
defective
(Since this is an internal defect, troubleshooting cannot be performed.)