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MPV ES
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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HO2S signal (front, RH/LH)
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 Oscilloscope Graph HO2S Signal (Front, RH/LH)
Courtesy of MAZDA MOTORS CORP.