MX-5 Miata Mazdaspeed L4-1.8L DOHC Turbo (2004)
Oxygen Sensor: Oscilloscope Patterns and Waveforms
Inspection Using An Oscilloscope (Reference)
HO2S (front) signal
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PCM terminal: 4W (+) <-> 4A (-)
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Oscilloscope setting: 0.2 V/DIV (Y), 2.0 ms/DIV (X), DC range
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Vehicle condition: Idling after warm-up
