Troubleshooting; Chapter 10. Troubleshooting - Yamaha YFM400FAR Service Manual

EB803020

TROUBLESHOOTING

IF THE GEAR MOTOR FAILS TO OPERATE:
Procedure
Check:
1.Fuses (main, four-wheel drive)
2.Battery
3.Main switch
NOTE:
Remove the following
G
troubleshooting:
1)Seat
2)Front carrier
3)Front fender
Use the following
G
troubleshooting.
EB802011
1.Fuses (main, four-wheel drive)
Refer to "CHECKING THE SWITCHES".
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2.Battery
Check the battery condition.
G
Refer to "CHECKING THE BATTERY" in
CHAPTER 3.
Open-circuit voltage:
12.8 V or more at 20 °C (68 °F)
3.Main switch
Refer to "CHECKING THE SWITCHES".
*
2WD/4WD SELECTING SYSTEM
part(s) before
special tool(s) for
CONTINUITY
CORRECT
CORRECT
9 - 49
4.On-command four-wheel drive switch
5.Gear motor
6.Wiring connections
(the entire 2WD/4WD selecting system)
Pocket tester:
P/N. YU-03112-C, 90890-03112
NO CONTINUITY
Replace the fuse.
INCORRECT
Clean the battery terminals.
G
Recharge or replace the battery.
G
INCORRECT
Replace the main switch.
– +
ELEC