MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
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*1: When an isolation plate is not inserted to the short bar, voltage is approximately 0.2 V.
Inspection Using An Oscilloscope (Reference)
Wheel speed
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ABS HU/CM terminal:
RF: P (+) - O (-)
RR: N (+) - L (-)
LF: R (+) - Q (-)
LR: T (+) - S (-)
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Oscilloscope setting: 0.2 V/DIV (Y), 4 ms/DIV (X), AC range
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Vehicle condition: When turned 1 revolution per second
Note:
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As vehicle speed increase, period of wave shorten.
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If malfunctioning in the sensor rotor, wave profile warp.
