Chrysler PT Cruiser Service & Repair Manual page 181

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DESCRIPTION
DESCRIPTION - ANTILOCK BRAKE
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
BRAKE PROPORTIONING . . . . . . . . . . . . . . . 74
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
OPERATION
BRAKE PROPORTIONING . . . . . . . . . . . . . . . 75
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
. . . . . . . . . . . . . . . . . . . . . . . . . . 76
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
. . . . . . . . . . . . . . . . . . . . . . . . . 78
DESCRIPTION
DESCRIPTION - ANTILOCK BRAKE SYSTEM
This section covers the physical and operational
descriptions, and the on-car service procedures for
the Mark 20e Antilock Brake System (ABS) and
Mark 20e Antilock Brake System with traction con-
trol.
All vehicles equipped with ABS use electronic vari-
able brake proportioning (EVBP) to balance front-to-
rear braking when the brakes are applied in the
partial braking range. For more information on elec-
tronic brake distribution, (Refer to 5 - BRAKES -
ABS - DESCRIPTION).
BRAKES - ABS
TABLE OF CONTENTS
. . . . . . . . . . . . . . . . . . . . . 76
. . . . . . . . . . . . . . . . . . . 77
. . . . . . . . . . . . . . . . 78
. . . . . . . . 78
page
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
. . 74
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
The traction control system reduces wheel slip and
maintains traction at the driving speeds below 64
km/h (40 mph) when road conditions call for traction
assistance. For more information on traction control,
(Refer to 5 - BRAKES - ABS - DESCRIPTION).
This system shares most base brake hardware
used on vehicles without ABS. A vehicle equipped
with ABS, however, uses a different master cylinder
and brake tubes. Also included in the ABS system is
an integrated control unit (ICU) and four wheel
speed sensors. These components are described in
detail in this section. All vehicles with ABS come
standard with four-wheel-disc brakes.
The antilock brake system prevents wheel lockup
under braking conditions on virtually any type of
road surface. Antilock braking is desirable because a
vehicle that is stopped without locking the wheels
retains directional stability and some steering capa-
bility. This allows the driver to retain greater control
of the vehicle during braking.
BRAKES - ABS
. . . . . . . . . . . . . . . . . . . . . . . . . . . 78
. . . . . . . . . . . . . . . . . . . . . . . . . 80
. . . . . . . . . . . . . . . . . . . . . . . . . 80
. . . . . . . . . . . . . . . . . . . . . . . . . . . 81
. . . . . . . . . . . . . . . . . . . . . . . . . 82
. . . . . . . . . . . . . . . . . . . . . . . . . 82
. . . . . . . . . . . . . . . . . . . . . . . . . . . 82
. . . . . . . . . . . . . . . . . . . . . . . . . . 82
. . . . . . . . . . . . . . . . . . . . . . . . . 83
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
. . . . . . . . . . . . . . . . . . . . . . . . . 90
. . . . . . . . . . . . . . . . . . . . . . . . . . . 90
. . . . . . . . . . . . . . . . . . . . 92
. . . . . . . . . . . . . . . . . . . . . . . 92
. . . . . . . . . . . . . . . . . . . . . . . . . 92
5 - 73
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