Yamaha YZFR1W 2007 Service Manual page 337

8 Check the headlight relay (dimmer).
Refer to "CHECKING THE
RELAYS" on page 8-88.
OK↓
9 Check the entire lighting system's
wiring.
Refer to "LIGHTING SYSTEM" on
page 8-15.
OK↓
This circuit is OK.
LIGHTING SYSTEM
NG→
Replace the headlight relay.
NG→
Properly connect or repair the lighting
system's wiring.
8-18