brake sensor YAMAHA YZF-R1M 2015 Owners Manual

INSTRUMENT AND CONTROL FUNCTIONS
4-31
1
2
34
5
6
7
8
9
10
11
12
EAU12944
Brake pedalThe brake pedal is located on the right
side of the motorcycle. To apply the
rear brake, press down on the brake
pedal.
EAU67041
Brake systemThis model is equipped with an inte-
grated anti-lock brake system (ABS)
and a variable unified brake system
(UBS).
Regarding ABS, operate the brakes as
you would conventional brakes. If the
ABS is activated, a pulsating sensation
may be felt at the brake lever or brake
pedal. In this situation, continue to ap-
ply the brakes and let the ABS 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 withthe ABS than without.
The ABS and UBS hydraulic control
unit is monitored by the ABS ECU,
which will revert the system to conven- tional braking if a malfunction occurs.
TIP
The ABS performs a self-diagno-
sis test when the vehicle is started
and reaches a speed of 10 km/h (6
mi/h). During this test, a “clicking”
noise may be audible from the hy-
draulic control unit, and a vibration
may be felt at the bake lever or
pedal, but this is normal.

This ABS has a test mode which
allows the owner to experience the
pulsation at the brake lever or
brake pedal when the ABS is oper-
ating. However, special tools are
required, so please consult yourYamaha dealer.
NOTICE
ECA20100
Be careful not to damage the wheel
sensor or wheel sensor rotor; other-
wise, improper performance of theABS will result.
1. Brake pedal
1
2CR-9-E0_1.book 31 ページ ２０１５年１月５日　月曜日　午前１１時５４分

INSTRUMENT AND CONTROL FUNCTIONS
4-32
1
2
345
6
7
8
9
10
11
12
Regarding variable UBS, operating the
brake lever will generate corresponding
brake pressure at the front brake and to
a variable degree, the rear brake. The amount of rear wheel braking force to
be applied by the UBS is based on ve-
hicle attitude and lean angle. However,
operating only the brake pedal will not
generate any brake pressure at the
front brake.
For full braking performance, apply
both the brake lever and brake pedal si-
multaneously.
When both the brake lever and the
brake pedal are applied simultaneous-
ly, the UBS will control the distribution
of braking force between the two
wheels.
TIP
The UBS does not function until
the vehicle starts moving.

After coming to a stop while apply-
ing the brake lever, the UBS is still
enabled. As further squeezing of
the brake lever will not increase
the braking power of the rear
brake, apply the rear brake should
further braking power be neces-
sary (such as when parking on a
slope).
The UBS disables after the brake
lever is released.
When the vehicle starts moving,
the UBS is re-enabled.
1. Front wheel sensor rotor
2. Front wheel sensor
1. Rear wheel sensor rotor
2. Rear wheel sensor
1
22
1
2CR-9-E0_1.book 32 ページ ２０１５年１月５日　月曜日　午前１１時５４分