Component Tests and General Diagnostics

^ Check rotor serration (teeth) for being missing, damaged or deformed.
^ Turn drive shaft and check if rotor rotation is free from eccentricity and looseness.
^ Check that no foreign material is attached. If any faulty is found, repair or replace.





OUTPUT VOLTAGE INSPECTION
1. Turn ignition switch "OFF".
2. Hoist vehicle a little.
3. Disconnect connector of wheel speed sensor.





4. Connect voltmeter between connector terminals.
5. While turning wheel at a speed of approximately 2/3 to 1 full rotation per second, check AC voltage of sensor, which should be (29-44 Hz): 150 mV or more If measured voltage is not as specified, check sensor, rotor and their installation conditions.

VISUAL INSPECTION
^ Check sensor for damage.





^ Check sensor for resistance. Resistance between terminals should be 1.2-1.6 k ohms at 20°C (68°F). Resistance between terminal and sensor body should be 1 megaohm or more. If any fault is found then replace.