Wheel Speed Sensor: Service and Repair

REMOVAL
Pre-removal Operation:
- Splash Shield removal .

Follow removal steps outlined in illustration.

INSPECTION
Speed Sensor
1) Check whether any metallic foreign material has adhered to the parts shown in the illustration at the speed sensor tip, and it so, remove it.

NOTE: The section shown in the illustration can become magnetized because of the magnet built into the speed sensor, with the result that foreign metallic material is attached to it.

2) Measure the resistance between the speed sensor terminals.

Standard value: 1.0 - 1.2 ohms

If the internal resistance of the speed sensor is not within the standard value, replace with a new speed sensor.

3) Check the speed sensor cable for breakage, damage or disconnection. Replace with a new one if a problem is found.

NOTE: When checking for cable damage, remove the cable clamp part from the body and then gently bend and pull the cable near the clamp to check whether or not an intermittent contact results. Check the connector connection and the terminal insertion.

Speed Sensor Insulation Inspection

1) Remove all connections from the speed sensor, and then measure the resistance between terminals (1) and (2) and the body of the speed sensor.

Standard value: 100 k ohms or more

2) If the speed sensor insulation resistance is outside the standard value range, replace with a new speed sensor.

ABS Toothed Rotor

Check whether ABS rotor teeth are broken or deformed. Replace the ABS rotor if the teeth are damaged or deformed.

INSTALLATION
Installation in reverse order as removal.

Installation Service Point

>A< Front Speed Sensor/rear Speed Sensor Installation.
The clearance between the speed sensor and the ABS rotor's toothed surface is not adjustable, but measure the distance between the sensor installation surface and the ABS rotor's toothed surface.

Post-installation Operation:
- Wheel Speed Sensor Output Voltage Checking.
- Splash Shield Installation .