Failure Code [Dy2Ekb] Wiper Drive (Rev) Short - Komatsu PC210-8 Shop Manual

40 Troubleshooting

Failure code [DY2EKB] Wiper Drive (Rev) Short

User code Failure code
— DY2EKB
Contents of
• When output to wiper motor drive reverse side was turned ON, short circuit was detected in circuit.
trouble
Action of • Turns output to wiper motor drive reverse side OFF.
controller
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on
• Windshield wiper does not operate.
machine
Related infor-
• Method of reproducing failure code: Turn starting switch ON + Set wiper switch to INT or ON.
mation
Defective wiper motor (Inter-
1 nal short circuit or ground
fault)
Possible causes
and standard
value in normal
Ground fault in wiring har-
state
3 ness (Short circuit with GND
circuit)
4 Defective pump controller
PC210, 230, 240-8
Wiper motor drive reverse system short
Trouble
(Pump controller system)
Cause
a Prepare with starting switch OFF, then carry out troubleshooting
Between (1) – chassis ground
a Prepare with starting switch OFF, then carry out troubleshooting
Wiring harness between C02 (female) (114)
– M05 (male) (1)
If causes 1 and 2 are not detected, pump controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)
Standard value in normal state/Remarks on troubleshooting
without turning starting switch ON.
M05 (female)
Between (1) – (3)
without turning starting switch ON.
UEN00243-01
Continuity/Resistance
There is continuity
Min. 1 Mz
Resis-
Min. 1 Mz
tance
37
1