Failure Code [Daf3Kk] Unsw Power Supply: Ground Fault/Disconnection - Komatsu WA250-6 Shop Manual

SEN03844-00
Failure code [DAF3KK] UNSW power supply: Ground fault/
Disconnection
Action code Failure code
E01 DAF3KK
Contents of
• When accessory power supply (power supply for operation) voltage is above 17 V, UNSW power
trouble
supply (power supply for memory) has ground fault.
Action of
• None in particular.
machine monitor
Problem that • Service meter time gains or loses.
appears on
• Odometer does not advance.
machine
• Fault history data is not saved.
Related
• Method of reproducing failure code: Turn starting switch ON.
information
Ground fault in wiring har-
1 ness (Contact with GND cir-
Possible causes
cuit)
and standard
value in normal
state
2 Defective machine monitor
14
40-340

Failure code [DAF3KK] UNSW power supply: Ground fault/Disconnection

UNSW power supply: Ground fault/Disconnection
Trouble
(Machine monitor system)
Causes
a Prepare with starting switch OFF, then carry out troubleshooting
without turning starting switch ON.
Between wiring harness battery relay R01 –
L24 (female) (4), (5) and ground
a Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Between L24 (female) (4), (5) – (9), (10),
(17), (18), (19), (20)
340 Troubleshooting by failure code (Display of code), Part 4
Standard value in normal state/Remarks on troubleshooting
Resis-
Min. 1 Mz
tance
Voltage 20 – 30 V
WA250, 250PZ-6