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2008 - MX-5 - Brakes

FRONT ABS WHEEL-SPEED SENSOR INSPECTION

Installation Visual Inspection

1. Inspect the following items:
a. Excessive play of the ABS wheel-speed sensor
b. Deformation of the 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 ABS sensor rotor. This is dimension A.
3. Measure the distance between the front ABS wheel-speed sensor installation surface and the tip of ABS wheel-speed sensor. This is dimension B.

4. Calculate the clearance between the front ABS wheel-speed sensor and the ABS sensor rotor using the following formula:
5. Verify that the clearance between the ABS sensor rotor and the front ABS wheel-speed sensor is as indicated below.

Sensor Output Value Inspection

CAUTION:

1. Turn the ignition switch off.
2. Connect the M-MDS to the DLC-2.

3. Select the following PIDs using the M-MDS:
4. Start the engine and drive the vehicle.
5. Verify that the display of the M-MDS shows the same value as the speedometer.


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