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Mazda
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2012
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3 i Sport, 2.0L Eng VIN F, Automatic Trans
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Engine Control System [MZR 2.0, MZR 2.5]
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Inspection Using An Oscilloscope (Reference)
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A/F sensor heater control
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
A/F sensor heater control
Fig 1: A/F Sensor Heater Control Waveform Graph
PCM terminals
2A(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 200 ms/DIV (X), DC range
Vehicle condition
Idle (immediately after starting the engine)