Failure Code [D110Kb] Battery Relay Drive S/C - Komatsu Galeo PC800-8 Shop Manual

SEN00791-02

Failure code [D110KB] Battery Relay Drive S/C

Action code Failure code
E01 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 • If cause of failure disappears, system resets itself.
Problem that
appears on • There may be a trouble in writing data into the ROM (non-volatile memory) of each controller.
machine
Related • Operating condition of battery relay (ON/OFF) can be checked with monitoring function.
information (Code 03700: Controller Output)
Defective battery relay
1
(Internal short circuit)
Possible causes
Ground fault in wiring har-
and standard
ness
2
value in normal
(Short circuit with GND cir-
state
cuit)
3 Defective pump controller
52
Battery Relay Drive S/C
Trouble
(Pump controller system)
Cause
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Between BR – chassis ground
aPrepare with starting switch OFF, then carry out troubleshooting with-
out turning starting switch ON.
Wiring harness between CP03 (female) (4) –
D01 – J01 – battery relay terminal BR and
chassis ground
Wiring harness between starting switch termi-
nal BR – J01 (2) (4) – D01 (female) (2) and
chassis ground
aPrepare with starting switch OFF, then turn starting switch ON and
carry out troubleshooting.
Between (4) –
chassis ground
Standard value in normal state/Remarks on troubleshooting
Battery relay (Unit)
Between BR – E
Turn starting switch
CP03
ON o OFF
40 Troubleshooting
Resistance
Approx. 100z
Min. 1 Mz
Resis-
tance
Resis-
tance
Voltage
OFF.
20 – 30 V
(0.5 sec.)
PC800, 850-8
Min. 1 Mz
Min. 1 Mz