Instrument and control functions
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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.
Regarding variable UBS, operating the
brake lever will generate corresponding
brake pressure at the front brake and to
a variable degree, the rear brake. Theamount 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 cont
rol 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.
1. Front wheel sensor rotor
2. Front wheel sensor
1. Rear wheel sensor rotor
2. Rear wheel sensor
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BX4-9-E2.book 29 ページ ２０１８年９月６日 木曜日 午後４時３９分
