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Mazda
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2012
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CX-7 i SV, 2.5L Eng VIN M
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Engine Control System [2.5L L5]
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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HO2S heater control
HO2S heater control
Fig 1: HO2S Heater Control Graph
PCM terminals
2B(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 1 s/DIV (X), DC range
Vehicle condition
Idle (immediately after starting the engine)