4E
Front Wheel Speed Sensor On-Vehicle Inspection
Output Voltage Inspection
1) Turn ignition switch OFF.
2) Hoist vehicle a little.
3) Disconnect wheel speed sensor connector.
4) Connect voltmeter between connector terminals.
5) While turning wheel by hand at a speed of approximately 1 full rotation to 1 1/3 rotation per second, check AC voltage of sensor.
Output AC voltage at 1 to 1 1/3 rotation per second
120 mV or more at 42 – 54 Hz
1. Wheel speed sensor coupler
2. Right wheel sensor terminals
3. Left wheel sensor terminals
If measured voltage is not as specified, check sensor, rotor and their installation conditions.
Reference
When using oscilloscope for this check, check if peak-to-peak voltage (1) meets specification and waveform is complete.
Peak-to-peak voltage at 1 to 1 1/3 rotation per second
340 mV or more at 42 – 54 Hz