Windshield Wiper And Window Washer Do Not Work - Komatsu Galeo PC800-8 Shop Manual

SEN00793-02
E-17 Windshield wiper and window washer do not work
Double-wiper specification
Failure • Windshield wiper and window washer do not
phenomenon work
Relative
information
Defective upper wiper
1 motor
(Internal disconnection)
Possible causes Disconnection of wiring
and standard harness
2
value in normal (Disconnection or defec-
state tive contact with connector)
3 Defective machine monitor
Note: When the upper wiper and lower wiper are operated simultaneously: Max. 3 V
intervals)
36
Cause Standard value in normalcy and references for troubleshooting
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness between CM01 (female) (9) –
M05 (male) (3)
Wiring harness between M05 (male) (1) – chassis
ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the ON position during the troubleshooting.
(9) – chassis ground
(1) The upper windshield wiper does not operate
M05 (female)
Between (3) – (1)
CM01 Wiper switch
Between
40 Troubleshooting
Continuity and resistance
Continued
Resis-
tance
Resis-
tance
Voltage
OFF Max. 3 V
ON 20 – 30 V (Note)
20 – 30 V (at regular
PC800, 850-8
Max. 1 z
Max. 1 z