brake sensor YAMAHA YZF-R1 2022 Owners Manual

Special features
3-3
3
WARNING
EWA20880
Make sure the engine has sufficient-
ly slowe d b efore shiftin g to a lower
g ear. En gag in g a lower gear when
the en gine speed is too high coul d
make the rear wheel lose traction.
This coul d cause loss of control, an
acci dent an d injury. It coul d also
cause en gine or d rivetrain damag e.
LCS
The launch control system helps the
rider achieve smooth and swift launch-
es from the starting grid. It keeps en-
gine speed from rising when the
throttle grip is fully turned. The LCS
regulates engine power output in con-
junction with the traction control sys-
tem and LIF systems for optimal
traction and reduced wheel lift.NOTICE
ECA22950
Even when usin g LCS, the clutch le-
ver must b e released g ra dually to
avoi d clutch damag e.TIPLCS is intended for track use only.Quick shifter
The quick shifter allows for clutch le-
ver-less, electronically-assisted shift-
ing. When the sensor on the shift rod
detects the appropriate motion in the
shift pedal, engine power output is mo-
mentarily adjusted to allow for the gear
change to occur. The quick shifter does not operate
when the clutch lever is pulled, there-
fore normal shifting can be done even
when the quick shifter is set to on.
Check the quick shifter indicator for
current status and usability informa-
tion.
Upshiftin
g con ditions
 Vehicle speed of at least 20 km/h
(12 mi/h)
 Engine speed of at least 2200
r/min
 Accelerating (open throttle)
Downshiftin g con ditions
 Vehicle speed of at least 20 km/h
(12 mi/h)
 Engine speed of at least 2000
r/min
1. EBM1
2. EBM2
3. EBM3
4. Engine brake force
5. Engine r/min
1
2
3
4
5
Quick shifter usa bility In
dica-
tor Situation
Upshifting OK Accelerating
Downshifting
OK Decelerating
Quick shifter
cannot be used Stopped
Quick shifter
turned off Tu r n e d o f f
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Instrument and control functions
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EAU88462
Brake control system (BC)The brake control system regulates hy-
draulic brake pressure for the front and
rear wheels independently when the
respective brake lever or brake pedal is
applied and wheel lock is detected.
There are two settings, BC1 and BC2.
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.
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 distance
from the vehicle ahead to match the
riding speed even with ABS.
The ABS performs best with
long braking distances.
 On certain surfaces, such as
rough or gravel roads, the brak-
ing distance may be longer with
the ABS than without.
BC2 incorporates standard ABS and in
addition regulates braking power when
cornering to suppress lateral wheel
slip.
WARNING
EWA20891
The brake control system is not a
substitute for the use of proper rid-
ing and braking techniques. The
brake control system cannot pre-
vent all loss of traction due to over-
braking from excessive speed, or
lateral wheel slip when braking on
slippery surfaces.The ABS hydraulic unit is monitored by
the ABS ECU, which will revert the sys-
tem to conventional braking if a mal-
function occurs.
TIPThe ABS performs a self-diagnosis test
when the vehicle is started and reach-
es a speed of 10 km/h (6 mi/h). During
this test, a clicking noise may be audi-
ble from the hydraulic control unit, and
a vibration may be felt at the brake le-
ver or pedal, but this is normal.NOTICE
ECA20100
Be careful not to damage 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
2
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