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6 Touring
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Engine Control System (VIN M)
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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HO2S Heater Control Signal
HO2S Heater Control Signal
Fig 1: HO2S Heater Control Wave Pattern Signal
Courtesy of MAZDA MOTORS CORP.
PCM terminals
2BJ (+)-body ground (-)
Oscilloscope setting
5 V/DIV (Y), 50 ms/DIV (X), DC range
Vehicle condition
Idle (immediately after starting engine)