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Inspection Using An Oscilloscope (Reference): Wheel-Speed
- ABS HU/CM terminal:
- RR: A (+) - B (-)
- LR: C (+) - F (-)
- RF: D (+) - G (-)
- LF: E (+) - I (-)
- Oscilloscope setting:
- 1 V/DIV (Y), 2 ms/DIV (X), AC range
- Vehicle condition: Driving 30 km/h (18.6 MPH)
NOTE:
- As vehicle speed increases, period of wave shortens.
- If there is malfunctioning in the sensor rotor, wave profile warps.
Courtesy of MAZDA MOTORS CORP.