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2005
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MX-5 Miata Base, Standard
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Repair and Diagnosis
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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Generator field coil signal
Generator field coil signal
Fig 1: Generator Field Coil Signal - Oscilloscope Graph
Courtesy of MAZDA MOTORS CORP.
PCM terminal: 3M(+) <--> 4A(-)
Oscilloscope setting: 0.5 V/DIV (Y), 2.5 ms/DIV (X), DC range
Vehicle condition: Idling after warm-up (no electrical load)
Courtesy of MAZDA MOTORS CORP.