Komatsu PC130-8 User Manual

SEN04122-01 40 Troubleshooting
16 PC130-8
Failure code [DY2CKB] Washer drive short 1
User code Failure code
Trouble
Window washer drive system short
(Pump controller system)
— DY2CKB
Contents of
trouble
• When output to window washer drive system was turned ON (ground circuit was disconnected),
short circuit was detected in circuit.
Action of
controller
• Turns output to washer motor OFF.
• Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on
machine
• Window washer does not operate.
Related
information
• Method of reproducing failure code: Turn starting switch ON + Turn washer switch ON.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Defective washer motor
(Internal short circuit)
a Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
M06A (male) Resistance
Between (1) – (2) 5 – 20 z
2
Hot short (Short circuit with
24V circuit) in wiring harness
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Wiring harness between CP01 (female) (3)
– J04 – M6A (female) (2), – D02 (female) (7)
and chassis ground
Voltage Max. 1 V
3 Defective pump controller
If causes 1 and 2 are not detected, pump controller may be defec-
tive. (Since trouble is in system, troubleshooting cannot be carried
out.)

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English