Yamaha YFM70RY Service Manual page 312

2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly or ECU.
The fuel level warning light fails to come on.
1. Check the fuel sender.
Refer to "CHECKING THE FUEL
SENDER" on page 8-70.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly.
The speedometer fails to operate.
1. Check the speed sensor.
Refer to "CHECKING THE SPEED
SENSOR" on page 8-71.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly or ECU.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the fuel pump.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the speed sensor.
NG →
Properly connect or repair the signaling
system wiring.
8-23
SIGNALING SYSTEM