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Mazda
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2004
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3 i, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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Purge control signal
Purge control signal
PCM terminals
2AN (+)-Negative battery terminal (-)
Oscilloscope setting
2 V/DIV (Y), 0.1 s/DIV (X), DC range
Vehicle condition
Idle after warm-up
Fig 1: Inspection Graph Of Purge Control Signal Using Oscilloscope
Courtesy of MAZDA MOTORS CORP.