Yamaha YFM70RY Service Manual page 311

3. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the tail/brake light assembly.
The neutral indicator light fails to come on.
1. Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
2. Check the diode.
Refer to "CHECKING THE DI-
ODES" on page 8-66.
OK ↓
3. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly.
The reverse indicator light fails to come on.
1. Check the reverse switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly or ECU.
The coolant temperature warning light fails to come on.
1. Check the coolant temperature sen-
sor.
Refer to "CHECKING THE COOL-
ANT TEMPERATURE SENSOR"
on page 8-72.
OK ↓
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the neutral switch.
NG →
Replace the diode.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the reverse switch.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the coolant temperature sensor.
8-22
SIGNALING SYSTEM