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Mazda
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2012
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2 Touring, 1.5L Eng VIN Z, Automatic Trans
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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 [MZR 1.5]
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Pcm Inspection
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Inspection Using An Oscilloscope (Waveform Reference)
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A/F sensor heater control signal
A/F sensor heater control signal
Fig 1: A/F Sensor Heater Control Signal Waveform
PCM terminals
2X (+)-Negative battery terminal (-)
Oscilloscope setting
5 V/DIV (Y), 50 ms/DIV (X), DC range
Vehicle condition
idle (after warm up)