Komatsu ecot3 PC300LC-8 Shop Manual page 774

SEN02632-02
Trouble (3) When window washer switch is operated, window washer does not operate.
Related • Condition of window washer switch signal 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
Circuit diagram related to window washer motor of machine monitor
34
Cause Standard value in normal state/Remarks on troubleshooting
Machine monitor may be defective. (Since trouble is in system, trou-
bleshooting cannot be carried out.)
40 Troubleshooting
PC300, 350-8