Yamaha R1 Series 2015 Service Manual page 566

Fault code No.
Item
B-5 Defective relay unit.
B-6 Defective neutral switch.
B-7 Faulty shift drum (neutral detec-
tion area).
B-8 Malfunction in ECU.
B-9 Delete the fault code.
42
Rear wheel sensor: no normal signals are received from the rear
A
wheel sensor.
B Neutral switch: open or short circuit is detected.
C Clutch switch: open or short circuit is detected.
Check the relay unit.
Refer to "CHECKING THE
RELAY UNIT (DIODE)" on page
8-185.
Check the neutral switch.
Refer to "CHECKING THE
SWITCHES" on page 8-177.
Malfunction Replace the shift
drum.
Refer to "TRANSMISSION" on
page 5-90.
Replace the ECU.
Refer to "REPLACING THE
ECU (Engine Control Unit)" on
page 8-180.
8-85
FUEL INJECTION SYSTEM
Execute the diagnostic mode.
(Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever
released: "OFF"
Correct indication
B-9.
Incorrect indication
item B-6.
Execute the diagnostic mode.
(Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever
released: "OFF"
Correct indication
B-9.
Incorrect indication
item B-7.
Execute the diagnostic mode.
(Code No. 21)
When the transmission is in
neutral: "ON"
When the transmission is in
gear with the clutch lever
released: "OFF"
Correct indication
B-9.
Incorrect indication
item B-8.
Turn the main switch to "ON",
and then rotate the rear wheel
by hand.
Start the engine, and input the
vehicle speed signals by operat-
ing the vehicle at 20 to 30 km/h
(19 mi/h).
The fault code can also be
delete by activating the diagnos-
tic mode and selecting diagnos-
tic code number "63".
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