Yamaha FZ8NA Service Manual page 425

7. Check the headlight relay (on/off).
Refer to "CHECKING THE
RELAYS" on page 8-189.
OK↓
8. Check the entire lighting system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-25.
OK↓
Replace the ECU or meter assembly.
NG→
Replace the headlight relay.
NG→
Properly connect or repair the lighting
system's wiring.
8-30
LIGHTING SYSTEM