Contents: Removal ⇓ Examination ⇓
Procedure
1. Raise the vehicle and release the parking brake.
2. Disconnect the connector from the HECU.
Warning: Make sure to release the dual connector lock and connect the test lead to the harness side of the connector.
3. Connect a voltmeter or oscilloscope to the connector contacts and measure the voltage generated by the sensor when the wheel rotates.
Connector contacts
1 and 2: front left sensor
19 and 20: Front right sensor
5 and 6: rear left sensor
22 and 23: rear right sensor
Output voltage when measured by an oscilloscope: 150 mV.
Removal
Front wheel speed sensor
1. Remove the front wheel speed sensor mounting bolt.
2. Disconnect the connector and remove the front wheel speed sensor.
Rear wheel speed sensor
1. Remove the rear seat cushion.
2. Remove the rear pillar trim.
3. Remove the rear wheel.
4. Disconnect the connector and remove the rear wheel speed sensor.
Examination
1. Measure the resistance of the wheel speed sensor between the connector terminals.
Resistance:
- Front sensor: 1275-1495 Ohm
- Rear sensor: 1275-1495 Ohm
2. Connect a voltmeter to the sensor connector terminals, measure the voltage generated by the sensor when the wheel rotates.
Caution: Switch the voltmeter to measure AC voltage.