Troubleshooting - Yamaha WR450FB 2012 Owner's Service Manual

EAS1DX3216

TROUBLESHOOTING

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 and bulb
sockets condition.
Refer to "CHECKING THE BULBS
AND BULB SOCKETS" on page 9-
64.
OK
2. Check the fuse.
Refer to "CHECKING THE FUSE"
on page 9-65.
OK
3. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 9-66.
OK
4. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 9-60.
OK
5. Check the headlight relay.
Refer to "CHECKING THE RE-
LAYS" on page 9-69.
OK
6. Check the entire lighting system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 9-16.
OK
Replace the ECU.
NG
Replace the bulb (s) and bulb socket (s).
NG
Replace the fuse.
NG
• Clean the battery terminals.
• Recharge or replace the battery.
NG
Replace the main switch.
NG
Replace the headlight relay.
NG
Properly connect or repair the lighting sys-
tem's wiring.
9-18
LIGHTING SYSTEM