Failure Code [D110Kb] Battery Relay Drive Short - Komatsu Galeo PC138US-8 Shop Manual

SEN02464-01

Failure code [D110KB] Battery relay drive short

User code Failure code
— D110KB
Contents of
• Abnormal current flowed at output to battery relay drive circuit.
trouble
Action of • Turns output to battery relay drive circuit OFF.
controller • Even if cause of failure disappears, system does not reset itself until starting switch is turned OFF.
Problem that
appears on • Engine does not stop.
machine
Related
information
Defective battery relay
1
(Internal defect)
Possible causes
and standard
Ground fault in wiring har-
value in normal
ness
2
state
(Short circuit with GND cir-
cuit)
3 Defective pump controller
32
Battery relay drive short
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a Prepare with starting switch OFF, then carry out troubleshoot-
Between BR (terminal BR) –
Between BR (terminal BR) –
a Prepare with starting switch OFF, then carry out troubleshoot-
Wiring harness between C02 (female) (108)
– D02 – J06 – BR (terminal BR) and chassis
ground
a Prepare with starting switch OFF, then turn starting switch ON
Between (108) –
chassis ground
ing without turning starting switch ON.
Battery relay
RE (terminal E)
chassis ground
ing without turning starting switch ON.
and carry out troubleshooting.
Turn starting switch
C02 (female)
ON o OFF
40 Troubleshooting
Resistance
There is continuity
Min. 1 Mz
Resis-
tance
Voltage
OFF.
20 – 30 V
(4 – 7 sec.)
PC138US, USLC-8
1
Min. 1 Mz