Inspection Using An Oscilloscope (Reference) Wheel speed

Fig 1: Wheel Speed Wave Form Pattern

Courtesy of MAZDA MOTORS CORP.

ABS HU/CM terminal:
RF:P (+)-O (-)

RR:N (+)-L (-)

I_F:R (+)-Q (-)

LR:T (+)-S (-)
Oscilloscope setting:0.2 V/DIV (Y), 4 ms/DIV (X), AC range
Vehicle condition: When turned 1 revolution per second
NOTE:
- As vehicle speed increase, period of wave shorten.
- If malfunctioning in the sensor rotor, wave profile warp.