Generator field coil control

Fig 1: Generator Field Coil Control Voltage Signal Waveform

Courtesy of MAZDA MOTORS CORP.

PCM terminals 

• 2AA(+) - body ground(-)

  Oscilloscope setting 

• 0.5 V/DIV (Y), 2 ms/DIV (X), DC range

  Vehicle condition 

• idle (after warm up)