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5-10
BRAKfS
-
Anti-lock Braking System tABS)
<FWD>
SENSOR
WHEEL
SPEED
SENSOR
The
wheel
speoo
s",nsor for all
ttle
wheels
consists 01 the rotor mountoo on
the
axle hub and
the
speed sensor mC>\lllled on the
knuckle
Ifroot)
arld backing plate Irear).
The
principle
of operation
is
thaI,
8S is con-
Front
"H0111
STOP LIGHT SWITCH
This switch goes ON when the brake pedal
is
pressed and goo$ OFF when
it
is
released_
The
ACTUATOR
HVDRAUUC
UNIT (HU)
The
HU is supported flexibly on the shield plate in
th
e
right
front of
the
engine companmellt.
There
are three solenoid valves;
for
the left front
whefll. right front wheel
~nd
rear
wheels.
A
plunger valve
is
built
into
the
HU to equalize
the
hydraulic pressure for both
rear
wheelS. By using
Pump
motor
ventionally done, the speed sensor
changes
the
magnetic
flux
vari8tions due to the ridges and
lIalleys on the rotor to lIoltage lIariations arld
outputs this.
Rn,
14FOO86
ECU
uses
this signal to
judge
whether or not the
brake has
been
pressed.
this plunger IIsllle, it
is
possible to
~lIe
a
2-
system
separation
of
the
left front wtleef
-
right
rear wheel
arld
right front wh"",1 -
left
rear
wheel
and X-arrangement of brake lines is
normall~
main!<linad.
Front
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