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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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Hydraulic Variable Valve Timing Control Signal
Hydraulic Variable Valve Timing Control Signal
Fig 1: Hydraulic Variable Valve Timing Control Output Voltage Signal Graph
Courtesy of MAZDA MOTORS CORP.
PCM terminals
1AS(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
Racing (Engine speed 3, 500 RPM)