Note. The front wheel speed sensor rotor is integrated with the front wheel drive shaft and is non-separable.
Removing the front wheel speed sensor and the rear wheel speed sensor
Attention! Be careful when handling the wheel speed sensor pole piece and the toothed surface of the rotor to avoid damaging them with other parts.
Installing the front wheel speed sensor and the rear wheel speed sensor
The distance between the speed sensor and the toothed surface of the ABS rotor is not adjustable, but measure the distance between the mounting surface of the sensor and the toothed surface of the rotor.
Nominal value: 28.2 - 28.5 mm
Checking the wheel speed sensor
Check the absence of any metal particles on the surface of the pole piece and remove if any.
Also check for damage to the pole piece; if any are found, replace the sensor.
Note. Since a magnet is installed inside the speed sensor, the pole piece is magnetized, causing foreign metal materials to be easily attracted to it. In addition, if the pole piece is damaged, the sensor will not be able to correctly detect the wheel speed.
Measure the resistance between the wheel speed sensor leads.
Rated value: 1.0-1.5 kΩ.
If the internal resistance of the speed sensor is out of specification, replace it with a new one.
Check for damage, breakage or poor contact in the sensor wires; if any are found, replace the wire with a new one.
Note. To check for damage to the sensor wire, remove the wire clamp from the body, then bend and pull on the wire to check for a temporary break in contact.
Checking the insulation of the speed sensor
Disconnect all wires from the sensor, and then measure the resistance between terminals 1 and 2 and the speed sensor housing.
Rated value: 100 kΩ or more.
If the insulation resistance is not within specification, replace the wheel speed sensor.
Wheel speed sensor gear rotor
Check for deformation or breakage of the rotor teeth; if any are found, replace the rotor with a new one.