Failure Code [Dy2Ckb] Washer Drive S/C - Komatsu Galeo PC800-8 Shop Manual

SEN00792-02

Failure code [DY2CKB] Washer Drive S/C

Action code Failure code
— DY2CKB
Contents of • When washer drive circuit was connected to GND (when output was turned ON), abnormal current
trouble flowed.
Action of
• Turns output to washer motor circuit OFF.
controller
Problem that
appears on • Window washer operation stops.
machine
Related
information
Defective washer motor
1
(Internal short circuit)
Possible causes
Hot short (Short circuit with
and standard
2 24V circuit) in wiring har-
value in normal
ness
state
3 Defective machine monitor
64
Washer Drive S/C
Trouble
(Machine monitor system)
Cause Standard value in normal state/Remarks on troubleshooting
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Wiring harnesses between CM01 (female) (3) –
M06 (female) (2), – D04(female) (6) and chas-
sis ground
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Between (3) –
chassis ground
M06 (male)
Between (2) – (1)
CM01 Washer switch
OFF
ON
40 Troubleshooting
Resistance
5 – 20 z
Voltage Max. 1 V
Voltage
20 – 30 V
Max. 1 V
PC800, 850-8