Komatsu PC490LC - Page 183

Fuse 1 - Fuse capacities and circuit names
No.
Fuse ca-
pacity
Name of circuit
(1) 5 A Relay for lamp, emergency switch
(2) 30 A Solenoid valve
(3) 5 A PPC hydraulic lock solenoid
(4) 10 A Window washer, cigarette lighter
(5) 10 A Horn
(6) 5 A Auto preheater relay
(7) 10 A Revolving lamp
(8) 10 A
Radio, speaker, left knob switch, right knob
switch
(9) 10 A Headlamp, rear lamp
(10) 20 A Air conditioner unit
(11) 10 A Optional power source (1)
(12) 30 A
Optional power source (2), 12 V power
source and air suspension seat with heater
(13) 5 A Air conditioner ECU power source
(14) 5 A Key ACC signal
(15) 20 A Working lamp
(16) 10 A
Radio backup, room lamp, system operating
lamp
(17) 20 A Monitor, Pump controller
(18) 30 A Engine controller
(19) 5 A Air conditioner ECU backup
(20) 25 A
Fuel feed pump, optional power source (con-
tinuous power supply)
Fuse 2 - Fuse capacities and circuit names
No.
Fuse ca-
pacity
Name of circuit
(1) 10 A Cab head lamp (1)
(2) 10 A Cab rear lamp
(3) 10 A Lower wiper
(4) 10 A Quick coupler
(5) 15 A Refuel pump
(6) 10 A Cab head lamp (2)
(7) 10 A Option lamp
(8) 20 A Autogrease
(9) 30 A Option heater
(10) 10 A Spare
(11) 20 A Sensor power supply relay (1)
KS000855
OPERATION EXPLANATION OF COMPONENTS
3-111