Wastegate valve control (-) signal

Fig 1: Wastegate Valve Control (-) Signal Waveform

Courtesy of MAZDA MOTORS CORP.

PCM terminals 

• 1BZ(+)-body ground(-)

Oscilloscope setting 

• 5 V/DIV (Y), 10 ms/DIV (X), DC range

Vehicle condition 

• Accelerator pedal depressed