Yamaha R15 2022 Service Manual page 355

The speedometer fails to operate.
1. Check the front wheel sensor.
Refer to "CHECKING THE SPEED
SENSOR" on page 8-152.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-16.
OK ↓
Replace the hydraulic unit assembly,
ECU, meter assembly.
Refer to "REPLACING THE ECU
(engine control unit)" on page 8-142.
TIP
Repair or replace if there is an open or short circuit.
• Between front wheel sensor coupler and ABS ECU coupler.
(white–red)
(black–green)
• Between ABS ECU coupler and ECU coupler.
(white–white)
• Between ECU coupler and meter assembly.
(yellow–blue)
The tachometer fails to operate.
1. Check the crankshaft position sen-
sor.
Refer to "CHECKING THE CRANK-
SHAFT POSITION SENSOR" on
page 8-149.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-16.
OK ↓
Replace the ECU or meter assembly.
SIGNALING SYSTEM
NG →
Replace the front wheel sensor.
NG →
Properly connect or replace the wire har-
ness.
NG →
Replace the crankshaft position sensor/
stator assembly.
NG →
Properly connect or replace the wire har-
ness.
8-22
ELEC – +