MX-5 Miata L4-2.0L (2008)
Wheel Speed Sensor: Testing and Inspection
Front
Antilock Brake System
FRONT ABS WHEEL-SPEED SENSOR INSPECTION
Installation Visual Inspection
1. Inspect the following items:
^
If there is any malfunction, replace the applicable part.
1) Excessive play of the ABS wheel-speed sensor
2) 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:
Clearance (mm (in)) = A - B
5. Verify that the clearance between the ABS sensor rotor and the front ABS wheel-speed sensor is as indicated below.
^
If there is any malfunction, replace it.
Clearance 0.3-1.0 mm (0.012-0.057 in)
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.
3. Select the following PIDs using the M-MDS:
