July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

NE Signal

PCM terminal: 3Y(+) <-> 4A(-)
Oscilloscope setting: 1.0 V/DIV (Y), 5.0 ms/DIV (X), DC range
Vehicle condition: Idling

Fig 1: Identifying NE Signal
Courtesy of MAZDA MOTORS CORP.