Generator field coil control signal

Fig 1: Generator Field Coil Control Signal Oscilloscope Graph

Courtesy of MAZDA MOTORS CORP.

PCM terminals 

• 1BE(+)-body ground(-)

Oscilloscope setting 

• 1 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition 

• Idle (after warm up and no load)