Front
FRONT WHEEL SPEED SENSORREMOVAL
1. Remove the front wheel speed sensor mounting bolt.
2. Remove the front wheel speed sensor after disconnecting the wheel speed sensor connector
INSPECTION
1. Connect an ohmmeter between the wheel speed sensor terminals and measure the resistance.
Service standard
Front: 1600 Ohms + 10%
Rear: 1600 Ohms + 1 0%
2. Connect a voltmeter between the wheel speed sensor terminals and measure the voltage by turning the wheel.
NOTE: Set the voltmeter to measure AC voltage. Service standard: AC voltage detected.
ABS OPERATION CHECK
WHEEL SPEED SENSOR OUTPUT VOLTAGE CHECK
1. Lift the vehicle up and release the parking brake.
2. Disconnect the HECU harness connector and measure from the harness side connector.
CAUTION: Be sure to remove the connector double lock and insert the probe into the harness side. Inserting it into the terminal side will result in a bad connection.
3. Rotate the wheel to be measured at approximately 1/2-1 rotation per second, and check the output voltage using a circuit tester or an oscilloscope.
Output voltage
When measuring with an oscilloscope: 120 mV peak-to-peak or more at 2.75 kph.