Troubleshooting - Yamaha YZ 2018 Series Owner's Service Manual

EASB29B330

TROUBLESHOOTING

The battery is not being charged.
TIP
Before troubleshooting, remove the following part (s):
1. Seat
2. Side cover (left/right)
1. Check the fuse.
Refer to "CHECKING THE FUSES"
on page 8-60.
OK
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-61.
OK
3. Check the stator coil.
Refer to "CHECKING THE STA-
TOR COIL" on page 8-68.
OK
4. Check the rectifier/regulator.
Refer to "CHECKING THE RECTI-
FIER/REGULATOR" on page 8-69.
OK 
5. Check the entire charging system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-11.
OK
This circuit is OK.
EAS27270
CHARGING SYSTEM
NG
Replace the fuse(s).
NG 
• Clean the battery terminals.
• Recharge or replace the battery.
NG
Replace the stator assembly.
NG
Replace the rectifier/regulator.
NG
Properly connect or repair the charging
system's wiring.
8-13