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Section 10 (Engine Control System)
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Pcm Inspection
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Inspection Using An Oscilloscope (Reference)
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Fuel pump control signal
Fuel pump control signal
WARNING:
This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
PCM terminals
2AE(+)-body ground(-)
Oscilloscope setting
5 V/DIV (Y), 2 ms/DIV (X), DC range
Vehicle condition
Idle after warm up
Fig 1: Display - Fuel Pump Control Signal Waveform
Courtesy of MAZDA MOTORS CORP.