Troubleshooting - Yamaha WR250F Owner's Service Manual

TROUBLESHOOTING

EAS2GB2368
Any of the following fail to light: headlight or meter light.
TIP
Before troubleshooting, remove the following part (s):
1. Seat
2. Side cover (left)
3. Air scoop (left/right)
4. Fuel tank
1. Check the each bulbs condition.
Refer to "CHECKING THE BULBS
AND BULB SOCKETS" on page 9-
67.
OK 
2. Check the fuse.
Refer to "CHECKING THE FUSES"
on page 9-68.
OK 
3. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 9-69.
OK 
4. Check the main relay.
Refer to "CHECKING THE RE-
LAYS" on page 9-72.
OK 
5. Check the headlight relay.
Refer to "CHECKING THE RE-
LAYS" on page 9-72.
OK 
6. Check the entire lighting system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-16.
OK 
Replace the ECU, meter assembly, or
taillight.
NG 
Replace the bulb (s).
NG 
Replace the fuse(s).
NG 
• Clean the battery terminals.
• Recharge or replace the battery.
NG 
Replace the main relay.
NG 
Replace the headlight relay.
NG 
Properly connect or repair the lighting sys-
tem's wiring.
9-18
LIGHTING SYSTEM