Troubleshooting - Yamaha YZF-R125 Service Manual

YamahaR125.COM
EAS27230

TROUBLESHOOTING

The battery is not being charged.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Rider seat
2. Left side panel
3. Left lower side cowling
1. Check the fuse.
(Main)
Refer to "CHECKING THE FUS-
ES" on page 8-63.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-64.
OK ↓
3. Check the stator coil.
Refer to "CHECKING THE STATOR
COIL" on page 8-70.
OK ↓
4. Check the rectifier/regulator.
Refer to "CHECKING THE RECTI-
FIER/REGULATOR" on page 8-71.
OK ↓
5. Check the entire charging system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-11.
OK ↓
The charging system circuit is OK.
NG →
Replace the fuse.
NG →
• Refill battery fluid.
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the crankshaft position sen-
sor/stator assembly.
NG →
Replace the rectifier/regulator.
NG →
Properly connect or repair the charging
system wiring.
8-13
CHARGING SYSTEM