Yamaha FX Nytro 2008 Manuel D'atelier page 720

Check the main fuse and ignition fuse.
Refer to "FUSE INSPECTION" in CHAPTER 2.
FAULTY
OK
Check the battery.
Refer to "BATTERY INSPECTION" in CHAPTER 2.
OUT OF SPECIFICATION
OK
Check the engine stop switch and main switch.
Refer to "IGNITION SYSTEM".
FAULTY
OK
Check the speed sensor.
FAULTY
OK
Check the signal system wiring.
Refer to "CIRCUIT DIAGRAM".
FAULTY
OK
Correct the connection and/or replace the
speedometer unit and/or ECU.
SPEEDOMETER DOES NOT OPERATE.
Replace the main fuse and/or ignition fuse.
Replace or charge the battery.
Refer to "BATTERY INSPECTION" in CHAPTER
2.
Replace the right handlebar switch and/or main
switch.
Replace the speed sensor.
Properly connect or repair the signal system wir-
ing.
8-31
SIGNAL SYSTEM
– +
ELEC