Yamaha YZFR1W 2007 Service Manual page 336

EAS27260
TROUBLESHOOTING
Any of the following fail to light: headlight, high beam indicator light, taillight, license light or meter
light.
NOTE:
• Before troubleshooting, remove the following part(s):
1 Rider seat
2 Fuel tank
3 Side cowlings
1 Check the each bulbs and bulb
sockets condition.
Refer to "CHECKING THE BULBS
AND BULB SOCKETS" on page 8-
84.
OK↓
2 Check the fuses.
(Main, headlight and park)
Refer to "CHECKING THE FUSES"
on page 8-85.
OK↓
3 Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-85.
OK↓
4 Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-81.
OK↓
5 Check the dimmer switch.
Refer to "CHECKING THE
SWITCHES" on page 8-81.
OK↓
6 Check the rear brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-81.
OK↓
7 Check the headlight relay (on/off).
Refer to "CHECKING THE
RELAYS" on page 8-88.
OK↓
LIGHTING SYSTEM
NG→
Replace the bulb(s) and bulb
socket(s).
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Replace the immobilizer unit.
NG→
The dimmer switch is faulty. Replace
the left handlebar switch.
NG→
Replace the rear brake light switch.
NG→
Replace the headlight relay.
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