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Inspection Using An Oscilloscope (Reference) CKP
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HO2S signal (front, RH/LH)
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
HO2S signal (front, RH/LH)
PCM terminal: 18, 19 (+)-20 (-)
Oscilloscope setting: 0.2V/DIV (Y), 200ms/DIV (X), DC range
Vehicle condition: idle after warm up
Fig 1: Identifying HO2S Signal Waveform
Courtesy of MAZDA MOTORS CORP.