Inspection Procedure Using Oscilloscope

INSPECTION PROCEDURE USING OSCILLOSCOPE





After checking the connected state of the harness of the ABS sensor and connector, and measure the output voltage waveform of each ABS sensor on the oscilloscope as follows. Start the engine, shift the transaxle to the 1st gear to rotate the driving wheel, and rotate the non-driving wheel at constant velocity with the hand.

NOTE:
^ It is also possible to actually drive the vehicle and observe the waveform.
^ The output voltage is low if the wheel speed is low and gradually increases as the speed increases.

CAUTION: As the ABS sensor cable follows the movement of the front or rear suspension, it will change considerably on poor condition roads. Therefore, also observe the output voltage waveform of the ABS sensor with the sensor harness vibrated to simulate special conditions such as driving in poor road conditions.