FRONT ABS WHEEL-SPEED SENSOR INSPECTION

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Installation Visual Inspection

1.  Inspect the following items:

•  If there is any malfunction, replace the applicable part.

(1)  Excessive play of the front ABS wheel-speed sensor

(2)  Deformation of the front ABS wheel-speed sensor

Clearance inspection

1.  Remove the front ABS wheel-speed sensor.

2.  Measure the distance between the front ABS wheel-speed sensor installation surface and the front ABS sensor rotor. This is dimension A.

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3.  Calculate the clearance between the front ABS wheel-speed sensor and the front ABS sensor rotor using the following formula:

Clearance (mm {in}) = A-15 mm {0.59 in}

4.  Verify that the clearance between the front ABS sensor rotor and the front ABS wheel-speed sensor is as indicated below.

•  If there is any malfunction, verify the installation condition and replace if necessary.

Sensor Output Value Inspection

Caution

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

1.  Turn the ignition switch off.

2.  Connect the M-MDS to the DLC-2.

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

•  LF_WSPD

(LF wheel-speed sensor)

•  RF_WSPD

(RF 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.