Windshield Wiper And Window Washer Do Not Operate - Komatsu PC210-8 Shop Manual

UEN00244-02
E-19 Windshield wiper and window washer do not operate
Trouble (1) When wiper switch is operated, wiper monitor does not light up or go off.
Related infor-
• Condition of wiper switch signal 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) When wiper switch is operated, wiper does not operate.
Related infor-
• Condition of window rear limit switch signal can be checked with monitoring function.
mation
(Code: 02204 Switch 5)
Defective window rear limit
1
switch (Internal short circuit)
Defective wiper motor (Inter-
2
nal disconnection)
Disconnection in wiring har-
ness (Disconnection in wiring
3
Possible causes
or defective contact in con-
and standard
nector)
value in normal
state
Ground fault in wiring har-
4 ness (Short circuit with GND
circuit)
Defective pump controller
(Rear limit switch system)
5
Defective pump controller
(Wiper motor system)
40
Cause
Machine monitor may be defective. (Since trouble is in system,
troubleshooting cannot be carried out.)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
Between (1) – (2)
a Prepare with starting switch OFF, then carry out troubleshooting
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (119)
– M05 (male) (3)
Wiring harness between C02 (female) (114)
– M05 (male) (1)
a Prepare with starting switch OFF, then carry out troubleshooting
C01 (female) (57) – W03 (female) (1)
a Prepare with starting switch OFF, then carry out troubleshooting
Between (57) –
chassis ground
a Prepare with starting switch OFF, then carry out troubleshooting
Standard value in normal state/Remarks on troubleshooting
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
W03 (male) Front window
When installed to
When retracted to
without turning starting switch ON.
M05 (female)
Between (1) – (3)
without turning starting switch ON.
without turning starting switch ON.
without turning starting switch ON.
C01 (female) Front window
When installed to
When retracted to
without turning starting switch ON.
C02 (female)
Between (119) – (114)
40 Troubleshooting
Resistance
Min. 1 Mz
front
Max. 1 z
rear
Continuity
There is continuity
Resist-
ance
Resist-
ance
Resist-
ance
Resistance
Min. 1 Mz
front
Max. 1 z
rear
Continuity
There is continuity
PC210, 230, 240-8
1
Max. 1 z
Max. 1 z
Min. 1 Mz