Failure Code [D110Kb] Battery Relay Drive S/C - Komatsu ecot3 PC300LC-8 Shop Manual

SEN02630-05

Failure code [D110KB] Battery Relay Drive S/C

Action code Failure code
— D110KB
Contents of
• Abnormal current flowed at output to battery relay drive circuit.
trouble
Action of con- • Turns output to battery relay drive circuit OFF.
troller • 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 infor- • Operating condition of battery relay (ON/OFF) can be checked with monitoring function.
mation Code 03700: Controller Output)
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
56
Battery relay drive short
Trouble
(Pump controller system)
Cause Standard value in normal state/Remarks on troubleshooting
a
Between R02 (terminal BR) –
Between R02 (terminal BR) –
a
Wiring harness between CP02 (female)
(108) – J01 – R02 (terminal BR) and chassis
ground
a
CP02 (female)
Between (108) –
chassis ground
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Battery relay
R01 (terminal E)
chassis ground
Prepare with starting switch OFF, then carry out troubleshoot-
ing without turning starting switch ON.
Prepare with starting switch OFF, then turn starting switch ON
and carry out troubleshooting.
Turn starting switch
ON o OFF
40 Troubleshooting
Resistance
There is continuity
Min. 1 Mz
Resis-
tance
Voltage
OFF.
20 – 30 V
(4 – 7 sec.)
PC300, 350-8
1
Min. 1 Mz