Antilock Brake System

REAR ABS WHEEL-SPEED SENSOR INSPECTION

Installation Visual Inspection
1. Inspect for the following:
^ If there is any malfunction, replace the part.
1) Excessive looseness or play of the ABS wheel-speed sensor
2) Deformation of the ABS wheel-speed sensor
3) Deformation or damage of the ABS sensor rotor

Clearance Inspection
1. Remove the rear ABS wheel-speed sensor.





2. Measure the distance between the rear ABS wheel-speed sensor installation surface and the ABS sensor rotor. This is dimension A.
3. Calculate the clearance between the rear ABS wheel-speed sensor and the ABS sensor rotor using the following formula: Clearance (mm fin)) = A -13.9 (0.547)
4. Verify that the clearance between the ABS sensor rotor and the rear ABS wheel-speed sensor is as indicated below.
^ If there is any malfunction, replace it.
Clearance 1.46 mm (0.057 in) or less

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:
^ LR WSPD
(LR wheel-speed sensor)
^ RR WSPD
(RR 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 ABS wheel-speed sensor.