Installation; Rear Wheel Speed Sensor Description - Chrysler PT Cruiser Service & Repair Manual

5 - 80 BRAKES - ABS
FRONT WHEEL SPEED SENSOR (Continued)
(4) Remove the speed sensor cable grommet from
the retaining bracket attached to the brake hose on
the outside of the frame rail.
(5) Remove the bolt mounting the wheel speed sen-
sor head to the steering knuckle (Fig. 7).
Fig. 7 Wheel Speed Sensor (Heat Shield Not Shown)
1 - RIGHT FRONT WHEEL SPEED SENSOR
2 - TONE WHEEL
CAUTION: When removing a wheel speed sensor
from the knuckle, do not use pliers on the sensor
head. This may damage the sensor head. If the sen-
sor has seized, use a hammer and a punch to tap
the edge of the sensor head ear, rocking the sensor
side-to-side until free.
(6) Carefully, remove the sensor head and heat
shield from the steering knuckle.
(7) Remove the screw securing the wheel speed
sensor to the rear of the strut (Fig. 8). Remove the
wheel speed sensor.

INSTALLATION

CAUTION: Failure to install speed sensor cables
properly may result in contact with moving parts or
an over extension of cables causing an open cir-
cuit. Be sure that cables are installed, routed, and
clipped properly.
(1) Attach the wheel speed sensor to the strut
using the its mounting screw (Fig. 8).
(2) Install the wheel speed sensor head in the
steering knuckle (Fig. 7). Install the mounting bolt.
Tighten the mounting bolt to a torque of 12 N·m (105
in. lbs.).
Fig. 8 Wheel Speed Sensor At Strut
1 - ABS WHEEL SPEED SENSOR ROUTING BRACKET (IF
EQUIPPED)
2 - GROUND STRAP
3 - GROUND STRAP SCREW
4 - ABS SENSOR BRACKET SCREW (IF EQUIPPED)
(3) From the sensor bracket on the strut, loop the
sensor cable upward, then downward at the outside
of the frame rail. Install the speed sensor cable grom-
met onto the retaining bracket attached to the brake
hose on the outside of the frame rail.
(4) Loop the wheel speed sensor cable around the
bottom of the frame rail and connect it to the wiring
harness connector on the inside of the frame rail
(Fig. 5). Remember to push in the locking tab on the
connector.
(5) If the sensor being installed is the left front,
clip the speed sensor cable to the brake tube on the
inside of and under the frame rail (Fig. 6).
(6) Install the tire and wheel assembly. Progres-
sively tighten wheel mounting nuts to 135 N·m (100
ft. lbs.).
(7) Lower the vehicle.
(8) Road test vehicle to ensure proper operation of
the base brakes and ABS.
REAR WHEEL SPEED SENSOR
DESCRIPTION
The Mark 20e system uses two-wire wheel speed
sensors, known as active wheel speed sensors. The
sensors use an electronic principle known as magne-
toresistive to help increase performance and durabil-
ity. The sensors convert wheel speed into a small
digital signal. A wheel speed sensor is used at each
wheel. The gear (tooth) type tone wheel serves as the
trigger mechanism for each sensor. At each wheel of
the vehicle there is one wheel speed sensor and one
tone wheel.
PT