Yamaha R1 Series 2015 Service Manual page 518

5. Check the shift switch.
Refer to "DIAGNOSTIC CODE:
SENSOR OPERATION TABLE" on
page 9-7 and "CHECKING THE
SWITCHES" on page 8-177.
OK
6. Check the neutral switch.
Refer to "DIAGNOSTIC CODE:
SENSOR OPERATION TABLE" on
page 9-7 and "CHECKING THE
SWITCHES" on page 8-177.
OK
7. Check the entire signaling system's
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-29.
OK
Replace the ECU.
Refer to "REPLACING THE ECU (En-
gine Control Unit)" on page 8-180.
The speedometer fails to operate.
1. Check the rear wheel sensor.
Refer to "MAINTENANCE OF THE
REAR WHEEL SENSOR AND
SENSOR ROTOR" on page 4-40.
OK
2. Check the entire wheel sensor wir-
ing.
Refer to TIP.
OK
Replace the hydraulic unit assembly,
ECU, meter assembly.
Refer to "REPLACING THE ECU (En-
gine Control Unit)" on page 8-180.
TIP
Repair or replace if there is an open or short circuit.
• Between rear wheel sensor coupler and ABS ECU coupler.
(white–white)
(black–black)
• Between ABS ECU coupler and ECU coupler.
(gray/black–gray/black)
(white/blue–white/blue)
• Between joint coupler and ECU coupler.
(blue/white–blue/white)
(blue/black–blue/black)
• Between joint coupler and meter assembly coupler.
(blue/white–blue/white)
(blue/black–blue/black)
Replace the shift switch.
NG
Replace the neutral switch.
NG
Properly connect or repair the signaling
system's wiring.
NG
Replace the rear wheel sensor.
NG
Properly connect or repair the wheel sen-
sor wiring.
NG
8-37
SIGNALING SYSTEM