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CX-9 Signature
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PCM Inspection
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Inspection Using An Oscilloscope (Reference)
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Intake CMP Signal
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Intake CMP Signal
Fig 1: Exhaust CMP Output Voltage Signal Graph
Courtesy of MAZDA MOTORS CORP.
PCM terminals
1V(+)-body ground(-)
Oscilloscope setting
2 V/DIV (Y), 20 ms/DIV (X), DC range
Vehicle condition
Idle (after warm up)