Yamaha YZF-R125 Service Manual page 294

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4. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly.
The neutral indicator light fails to come on.
1. Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 8-59.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the meter assembly.
The fuel gauge fails to operate.
1. Check the fuel sender.
Refer to "CHECKING THE FUEL
SENDER" on page 8-72.
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 8-72.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Replace the ECU or meter assembly.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the neutral switch.
NG →
Properly connect or repair the signaling
system wiring.
NG →
Replace the fuel sender.
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