Komatsu Galeo PC800-8 Shop Manual page 768

SEN00793-02
Failure • Windshield wiper and window washer do not
phenomenon work.
Relative
information
1 Defective fuse No. 4
Defective washer motor
2 (Internal disconnection or
grounding fault)
Disconnection of wiring
harness
Possible causes 3
(Disconnection or defec-
and standard
tive contact with connector)
value in normal
state
Grounding fault of wiring
harness
4
(Contact with grounding cir-
cuit)
5 Defective machine monitor
42
Cause Standard value in normalcy and references for troubleshooting
If fuse is broken, the circuit probably has grounding fault, etc. (See
cause 4.)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Between (1) – chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness from FB1-4 outlet – J02 – M06
(female) (1)
Wiring harness from M06 (female) (2) – CM01
(female) (3)
aTurn the engine starting switch OFF for the preparations, and hold it in
the OFF position during the troubleshooting.
Wiring harness from FB1-4 outlet – J02 –M06
(female) (1), or FB1-4 outlet – D04 (female) (3),
and to other relative circuits and chassis ground
aTurn the engine starting switch OFF for the preparations, and hold it in
the ON position during the troubleshooting.
(3) – chassis ground
(4) Windshield washer does not operate.
M06 (male)
Between (1) – (2)
Windshield washer
CM01
switch
Between
40 Troubleshooting
Resistance
5 – 20 z
Min. 1 Mz
Resis-
tance
Resis-
tance
Resis-
tance
Voltage
OFF 20 – 30 V
ON Max. 1 V
PC800, 850-8
Max. 1 z
Max. 1 z
Min. 1 Mz