FRONT ABS WHEEL-SPEED SENSOR INSPECTION

id041500800400


Sensor Output Value Inspection

Caution
•  Resistance inspection using other testers may cause damage to the front ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS to inspect the front ABS wheel-speed sensor.

1.  Switch the ignition OFF.

2.  Connect the M-MDS to the DLC-2.

3.  Select the following PIDs using the M-MDS:

•  WSPD_SEN_LF (LF ABS wheel-speed sensor)
•  WSPD_SEN_RF (RF ABS wheel-speed sensor)

4.  Start the engine and drive the vehicle.

5.  Verify that the display of the M-MDS shows the same value as the speedometer.

•  If there is any malfunction, replace the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)


Installation Visual Inspection

1.  Inspect for the following:

•  If there is any malfunction, replace the part.
(1)  Excessive play of the front ABS wheel-speed sensor
(2)  Deformation of the front ABS wheel-speed sensor
(3)  Deformation or damage of the ABS sensor rotor


Clearance Inspection


Preparation prior to inspection

1.  Remove the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

2.  Remove the wheel hub and steering knuckle as a single unit. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)

3.  Install the front ABS wheel-speed sensor to the removed wheel hub, steering knuckle component, and tighten to the specified torque.

ac5wzw00000850
Tightening torque
8—10 N·m {82—101 kgf·cm, 71—88 in·lbf}


Clearance inspection

1.  Measure the gap between the ABS sensor rotor and front ABS wheel-speed sensor using a feeler gauge.

ac4ccw00000544
•  If not within the specification, verify the following items and repair or replace if necessary.
?  Is there deformation or damage to the ABS sensor rotor?
?  Is there deformation or damage to the front ABS wheel speed sensor?
?  Is there foreign material adhering?
Clearance
0.48—1.33 mm {0.019—0.052 in}


Servicing after inspection

1.  Remove the front ABS wheel-speed sensor from the wheel hub, steering knuckle component.

2.  Install the wheel hub, steering knuckle component. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)

3.  Install the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

4.  Inspect the front wheel alignment. (See FRONT WHEEL ALIGNMENT.)