Komatsu PC130-7, Shop Manual, Page: 168 / 342

20-320
PC130-7
TROUBLESHOOTING
Error code [116] (Trouble in storage of windshield wiper)
User code Error code
Trouble Trouble in storage of windshield wiper (Monitor panel system)
– 116
Contents of
trouble
• When the wiper stored, the P-signals of the storage range is not input.
Action of
monitor panel
• Turns the storage signal to the wiper motor OFF.
Problem that
appears on
machine
• The wiper is not stored.
Related
information
• The input state (ON/OFF) from the P-signals of the wiper operating range can be checked with the mon-
itoring function. (Code: 049, Left of upper line)
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective wiper motor
(Internal disconnection)
a
Prepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch.
W04 (male) Wiper blade Resistance
Between (4) and (5)
Storage range Max. 1
z
Operating range Min. 1 M
z
2
Disconnection in wiring
harness (Disconnection in
wiring harness or defective
contact in connector)
a
Prepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch.
Wiring harness between P01 (female) (12) and
W04 (female) (4)
Resistance Max. 1
z
Wiring harness between W04 (female) (5) and
chassis ground (A11, A12)
Resistance Max. 1
z
3 Defective monitor panel
a
Prepare with starting switch OFF, then turn starting switch ON and car-
ry out troubleshooting.
P01 Wiper blade Voltage
Between (12) and
chassis ground
Storage range Max. 1 V
Operating range 20 – 30 V
[116]
(1)