Antilock Brake System (ABS)

FRONT ABS WHEEL-SPEED SENSOR INSPECTION

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:

- 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.

Installation Visual Inspection

1. Inspect for the following:

- If there is any malfunction, replace the part.

a. Excessive play of the ABS wheel-speed sensor

b. Deformation of the ABS wheel-speed sensor

Clearance Inspection

Preparation prior to inspection

1. Remove the ABS wheel-speed sensor. Front ABS Wheel-Speed Sensor Removal/Installation

2. Remove the wheel hub, steering knuckle component. Front Wheel Hub, Steering Knuckle Removal/Installation

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






Tightening torque
- 4-6 Nm {41-61 kgf-cm, 36-53 in-lbf}

Clearance Inspection

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






- 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 ABS wheel speed sensor?
- Is there foreign material adhering?

Clearance
- 2.1 mm {0.082 in} or less

Servicing after inspection

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

2. Install the wheel hub, steering knuckle component. Front Wheel Hub, Steering Knuckle Removal/Installation

3. Install the ABS wheel-speed sensor. Front ABS Wheel-Speed Sensor Removal/Installation

4. Inspect the front wheel alignment. Front Wheel Alignment