Contents: Removal and installation ⤓ Examination ⤓
Removal and installation
− The parts are removed in the order of numbers shown in the figure "Removing the wheel speed sensor".
Removal the wheel speed sensor. 1 - front wheel speed sensor and wire, 2 - front wheel speed sensor rotor, 3 - rear wheel speed sensor rotor, 4 - rear wheel speed sensor and wire.
Note: The wheel speed sensor rotor mounted on the drive shaft is part of the shaft and cannot be replaced separately.
- Pay attention to the operation of removing the wheel speed sensor.
Caution: Be careful when handling the pole piece of the wheel speed sensor and the toothed surface of the rotor to avoid damaging them with other parts.
− Installation of parts is carried out in the reverse order of removal.
- After completing the installation of the parts, check the operation of the ABS system and the signal voltage of the wheel speed sensor.
Examination
1. Check the wheel speed sensor.
a) Check that there are no metal particles on the surface of the sensor pole piece and clean the surface of the pole piece if necessary.
Note: Since the speed sensor has a magnet inside, the sensor pole piece becomes magnetized, causing foreign metal particles to be easily attracted to it.
b) Check the sensor pole piece for damage; if damage is found, replace the sensor.
Note: If the sensor pole piece is damaged, the sensor will not be able to detect the wheel speed correctly.
c) Measure the resistance value between the terminals of the wheel speed sensor.
Nominal value - 1.24 - 1.64 kOhm
Note: If the resistance of the wheel speed sensor does not correspond to the nominal value, replace the sensor.
d) Disconnect the connector from the wheel speed sensor and then measure the resistance between terminals "1", "2" and the sensor body one by one.
Nominal value is 100 kOhm or more
Note: If the insulation resistance value does not correspond to the nominal value, replace the wheel speed sensor.
The text of the article was taken from the website [MitsubishiMan]
d) Check for damage, breakage or poor contact in the sensor wires; if any defects are found, replace the sensor.
Note: To check for damage to the sensor wire, remove the wiring bracket from the vehicle body, then bend the wire near the bracket and pull on it to check if there is a temporary lack of contact.
2. Check the sensor toothed rotor.
Check for deformation or breakage of the sensor rotor teeth; if any defects are found, replace the rotor with a new one.