2021 YAMAHA MT-09 ECU

Safety information
1-5
1operator and may limit control
ability, therefore, such accesso-
ries are not recommended.
 Use caution when adding electri-
cal accessories. If electrical ac-
cessories exceed the capacity of
the motorcycle’s electrical sys-
tem, an electric failure could re-
sult, which could cause a
dangerous loss of lights or engine
power.
Aftermarket Tires an d Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of han-
dling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. See page 7-15
for tire specifications and for informa-
tion on servicing and replacing your
tires.
Transportin g the Motorcycle
Be sure to observe following instruc-
tions before transporting the motorcy-
cle in another vehicle. 
Remove all loose items from the
motorcycle.
 Check that the fuel cock (if
equipped) is in the off position and
that there are no fuel leaks.
 Shift the transmission into gear
(for models with a manual trans-
mission).
 Secure the motorcycle with tie-
downs or suitable straps that are
attached to solid parts of the mo-
torcycle, such as the frame or up-
per front fork triple clamp (and not,
for example, to rubber-mounted
handlebars or turn signals, or
parts that could break). Choose
the location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
 The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the mo-
torcycle will not bounce exces-
sively during transport.
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Instrument and control functions
4-1
4
EAU1097B
Immo bilizer systemThis vehicle is equipped with an immo-
bilizer system to help prevent theft by
re-registering codes in the standard
keys. This system consists of the fol-
lowing:
 a code re-registering key
 two standard keys
 a transponder (in each key)
 an immobilizer unit (on the vehicle)
 an ECU (on the vehicle)
 a system indicator light (page 4-7) A
bout the keys
The code re-registering key is used to
register codes in each standard key.
Store the code re-registering key in a
safe place. Use a standard key for daily
operation.
When key replacement or re-register-
ing is necessary, bring the vehicle and
the code re-registering key along with
any remaining standard keys to a
Yamaha dealer to have them re-regis- tered.
TIP Keep the standard keys as well as
keys of other immobilizer systems
away from the code re-registering
key.
 Keep other immobilizer system
keys away from the main switch
as they may cause signal interfer-
ence.NOTICE
ECA11823
DO NOT LOSE THE CODE RE-REG-
ISTERING KEY! CONTACT YOUR
DEALER IMMEDIATELY IF IT IS
LOST! If the cod e re-registering key
is lost, the existin g stan dar d keys can still b
e used to start the vehicle.
However, re gisterin g a new stan-
d ar d key is impossi ble. If all keys
have been lost or damag ed , the en-
tire immo bilizer system must be re-
placed . Therefore, han dle the keys
carefully.  Do not su bmerse in water.
 Do not expose to hi gh tempera-
tures.
 Do not place near mag nets.
 Do not place near items that
transmit electrical si gnals.
 Do not han dle rou ghly.
 Do not grin d or alter.
 Do not disassem ble.
 Do not put two keys of any im-
mo bilizer system on the same
key rin g.
1. Code re-registering key (red bow)
2. Standard keys (black bow)UB7NE0E0.book Page 1 Friday, October 2, 2020 4:38 PM

Instrument and control functions
4-13
4 To start the timer, press the pass
switch.
Each press of the pass switch will in-
crease the lap count by 1 and reset the
current lap timer.
To pause the lap timer, press the wheel
switch inward.
To unpause the timer, press the pass
switch and the timer will resume with-
out counting a new lap.
To exit the lap time mode, turn it off in
the settings MENU. (See page 4-14.)
TIP
The engine must be running to
start the lap timer.
 The headlight will flash when the
pass switch is pressed.
 Whenever the lap timer is paused,
it can be resumed using the pass
switch.Brake control icon “BC”
This icon is replaced by the auxiliary
system warning and coolant tempera-
ture warning indicators when they are
activated.
For more information on the BC sys-
tem see “BC” on page 3-4. Error mo
de warnin g “Err”
When an internal error occurs (e.g.,
communication with a system control-
ler has been cut off), the error mode
warning will appear as follows.
“Err” and “ ” indicator light indicates
an ECU error.
“Err” only indicates an ABS ECU error.
TIPDepending on the nature of the error,
the display may not function properly
and TCS settings may be impossible to
change. Additionally, ABS may not
function properly. Use extra care when
braking and have a Yamaha dealer
check the vehicle immediately.Auxiliary system warnin g“”
This icon appears if a problem is de-
tected in a non-engine-related system.
Coolant temperature warnin g“”
This icon appears if the coolant tem-
perature reaches 116 °C (241 °F) or
higher. Stop the vehicle and turn off the
engine. Allow the engine to cool.
NOTICE
ECA10022
Do not continue to operate the en-
g ine if it is overheatin g.Oil pressure warnin g“”
This icon appears when the engine oil
pressure is low. When the vehicle is
first turned on, engine oil pressure has
yet to build, so this icon will come on
and stay on until the engine has been
started.TIPIf a malfunction is detected, the oil
pressure warning icon will flash repeat-
edly.NOTICE
ECA26410
Do not continue to operate the en-
g ine if the oil pressure is low.
UB7NE0E0.book Page 13 Friday, October 2, 2020 4:38 PM

Instrument and control functions
4-20
4
EAU91461
Brake control system (BC)The brake control system regulates hy-
draulic brake pressure for the front and
rear wheels independently when the
brakes are applied and wheel lock is
detected. This system has two settings
which can be changed in the settings
MENU. (See page 4-15.)
BC1 is standard ABS, which adjusts
brake pressure based on vehicle
speed and wheel speed data. BC1 is
designed to engage and maximize
braking when the vehicle is upright.
BC2 uses additional data from the IMU
to regulate applied brake power when
cornering to suppress lateral wheel
slip.
Regarding ABS, operate the brakes as
you would conventional brakes. When
the brake control system engages, a
pulsating sensation may be felt at the
brake lever or brake pedal as the hy-
draulic unit rapidly applies and reduces
brake pressure. In this situation, conti-
nue to apply the brake lever and brake
pedal to allow the ABS to work—do
not “pump the brakes” as this will re-
duce braking effectiveness.
WARNING
EWA16051
Always keep a sufficient d istance
from the vehicle ahead to match the
ri din g speed even with ABS.
 The ABS performs best with
lon g b rakin g d istances.
 On certain surfaces, such as
rou gh or g ravel roa ds, the b rak-
in g d istance may be lon ger with
the ABS than without.The ABS hydraulic unit is monitored by
the ABS ECU, which will revert the sys-
tem to conventional braking if a mal-
function occurs.
WARNING
EWA20891
The brake control system is not a
su bstitute for the use of proper ri d-
in g an d brakin g techniques. The
b rake control system cannot pre-
vent all loss of traction due to over-
b rakin g from excessive spee d, or
lateral wheel slip when brakin g on
slippery surfaces.
TIPThe ABS performs a self-diagnostic
test when the vehicle is started and
reaches a speed of 5 km/h (3 mi/h).
During this test, a clicking noise may
be audible from the hydraulic control
unit, and a vibration may be felt at the
brake lever or pedal, but this is normal.NOTICE
ECA20100
Be careful not to d amage the wheel
sensor or wheel sensor rotor; other-
wise, improper performance of the
ABS will result.1. Front wheel sensor rotor
2. Front wheel sensor
1 1 1
2 2
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Instrument and control functions
4-22
4
EAU13222
FuelMake sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline an d gasoline vapors are
extremely flammab le. To avoid fires
an d explosions an d to re duce the
risk of injury when refueling , follow
these instructions.1. Before refueling, turn off the en- gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. When refueling, be sure to insert the
pump nozzle into the fuel tank filler
hole. Stop filling when the fuel
reaches the bottom of the filler
tube. Because fuel expands when
it heats up, heat from the engine or
the sun can cause fuel to spill out
of the fuel tank. 3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately
wipe off spille d fuel with a clean,
d ry, soft cloth, since fuel may
d eteriorate painte d surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel tank cap.
WARNING
EWA15152
Gasoline is poisonous an d can cau-
se injury or death. Han dle gasoline
with care. Never siphon gasoline by
mouth. If you shoul d swallow some
g asoline or inhale a lot of gasoline
vapor, or get some g asoline in your
eyes, see your d octor immediately. If g
asoline spills on your skin, wash
with soap an d water. If g asoline
spills on your clothin g, chan ge your
clothes.
EAU86072
Your Yamaha engine was designed to
use unleaded gasoline with a research
octane number of 95 or higher. If en-
gine knocking or pinging occurs, use a
gasoline of a different brand or higher
octane rating.
1. Fuel tank filler tube
2. Maximum fuel level
1
2
Recommen ded fuel:
Unleaded gasoline (E10 acceptable)
Octane num ber (RON):
95
Fuel tank capacity: 14 L (3.7 US gal, 3.1 Imp.gal)
Fuel tank reserve:
2.8 L (0.74 US gal, 0.62 Imp.gal)
UB7NE0E0.book Page 22 Friday, October 2, 2020 4:38 PM

Periodic maintenance an d a djustment
7-17
7 characteristics of the motorcy-
cle may
be different, which
coul d lea d to an acci dent.
 Always make sure that the valve
caps are securely installed to
prevent air pressure leakag e.
 Use only the tire valves an d
valve cores listed below to
avoi d tire d eflation durin g a ri de.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha.
WARNING
EWA10601
This motorcycle is fitte d with super-
hi gh-spee d tires. Note the following
points in or der to make the most ef-
ficient use of these tires.  Use only the specified replace-
ment tires. Other tires may run
the dan ger of burstin g at super
hi gh spee ds.
 Bran d-new tires can have a rel-
atively poor g rip on certain roa d
surfaces until they have been
“ b roken in”. Therefore, it is a d-
visa ble before doin g any hi gh-
speed ridin g to ri de conserva-
tively for approximately 100 km
(60 mi) after installin g a new tire.
 The tires must be warme d up
b efore a hi gh-spee d run.
 Always a djust the tire air pres-
sure accor din g to the operating
con ditions.
EAU21963
Cast wheelsTo maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
 The wheel rims should be
checked for cracks, bends, warp-
age or other damage before each
ride. If any damage is found, have
a Yamaha dealer replace the
wheel. Do not attempt even the
smallest repair to the wheel. A de-
formed or cracked wheel must be
replaced.
 The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Front tire:
Size:120/70ZR17M/C (58W)
Manufacturer/model: BRIDGESTONE/BATTLAX
HYPERSPORT S22F
Rear tire: Size:180/55ZR17M/C (73W)
Manufacturer/model: BRIDGESTONE/BATTLAX
HYPERSPORT S22R
FRONT an d REAR:
Tire air valve: TR412
Valve core: #9100 (original)
UB7NE0E0.book Page 17 Friday, October 2, 2020 4:38 PM

Periodic maintenance an d a djustment
7-27
7
EAUM1653
Lub ricatin g the swin garm piv-
otsThe swingarm pivots must be lubricat-
ed by a Yamaha dealer at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU23273
Checkin g the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the con dition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level surfa- ce and hold it in an upright posi-
tion. WARNING! To avoi d injury,
securely support the vehicle so
there is no dan ger of it fallin g
over.
[EWA10752]
2. While applying the front brake, push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
NOTICE
ECA10591
If any d amage is foun d or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
Recommen ded lu bricant:
Lithium-soap-based grease
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Periodic maintenance an d a djustment
7-30
7
EAU91572
Replacin g the fusesThe fuse box is located under the seat.
(See page 4-24.)
If a fuse is blown, replace it as follows.
TIPThere is a spare fuse on the back
side of the fuse box cover. 
Use a fuse puller to remove the
fuse.
1. Turn the main switch off and turn
off the electrical circuit in ques-
tion.
2. Remove the fuse box cover by pressing inwards at the two points
indicated on the cover and pulling
upwards.
3. Remove the blown fuse using the fuse puller.
1. Fuse box
1 1 1
1. Ignition fuse 2
2. Signaling system fuse
3. Ignition fuse
4. Headlight fuse
5. ABS ECU fuse
6. Fuel injection system fuse
7. Electronic throttle valve fuse
8. Backup fuse 2
9. Main fuse
10.ABS motor fuse
11.ABS solenoid fuse
12.Radiator fan motor fuse
13.Terminal fuse 1
14.Backup fuse
15.Fuse puller
16.Spare fuse
1 12
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10 10
11 11
12 12
13 13
14 14
16 16
16 16 9
10
11
12
13
14
16
1615 15 15
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