Yamaha YZF R1 2021 Owner's Manual page 20

Special features
This traction control system automati-
cally adjusts according to the vehicle's
lean angle. To maximize acceleration,
when the vehicle is upright a less
amount of traction control is applied.
When cornering, a greater amount of
traction control is applied.
4
Traction control system
TIP
 The traction control system may
engage when the vehicle travels
over a bump.
 You may notice slight changes in
engine and exhaust sounds when
the traction control or other YRC
systems engage.
 When the traction control system
is turned off, SCS, LCS, and LIF
are also turned off automatically.
WARNING
The traction control system is not a
substitute for riding appropriately
for the conditions. Traction control
cannot prevent loss of traction due
to excessive speed when entering
turns, when accelerating hard at a
sharp lean angle, or while braking,
and cannot prevent front wheel slip-
ping. As with any vehicle, approach
surfaces that may be slippery with
caution and avoid especially slip-
pery surfaces.
When the key is turned to "ON", the
traction control system automatically
turns on. The traction control system
can be turned on or off manually only
when the key is in the "ON" position
and the motorcycle is stopped.
TIP
Turn the traction control system off to
help free the rear wheel if the motorcy-
cle gets stuck in mud, sand, or other
soft surfaces.
4-2
EWA15433
NOTICE
Use only the specified tires. (See
page 8-20.) Using different sized
tires will prevent the traction control
system from controlling tire rotation
accurately.
SCS
The slide control system regulates en-
gine power output when a sideward
slide is detected in the rear wheel. It
adjusts power output based on data
from the IMU. This system supports
the traction control system to contrib-
ute to a smoother ride.
EBM
The engine brake management system
reduces engine torque when deceler-
ating. The fuel injection, ignition timing,
and electronic throttle valve are elec-
tronically adjusted by the ECU. There
are 3 settings to suit the track, riding
conditions, or your personal prefer-
ence.
ECA16801