Yamaha TRACER MT09TRA Service Manual page 454

Fault code No.
Item
B-5 Defective relay unit.
B-6 Defective gear position switch
(neutral circuit).
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
8-137.
Check the gear position switch.
Refer to "CHECKING THE
GEAR POSITION SWITCH" on
page 8-147.
Malfunction  Replace the shift
drum.
Refer to "TRANSMISSION" on
page 5-76.
Replace the ECU.
Refer to "REPLACING THE
ECU (engine control unit)" on
page 8-132.
8-63
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  Go to item
B-9.
Incorrect indication  Go to
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  Go to item
B-9.
Incorrect indication  Go to
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  Go to item
B-9.
Incorrect indication  Go to
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".