IGT1, IGT2, IGT3, IGT4 control

Courtesy of MAZDA MOTORS CORP.

PCM terminals 

• IGT1 (ignition coil No. 1): 2G (+)-body ground (-)
• IGT2 (ignition coil No. 2): 2K (+)-body ground (-)
• IGT3 (ignition coil No. 3): 2L (+)-body ground (-)
• IGT4 (ignition coil No. 4): 2H (+)-body ground (-)

Oscilloscope setting 

• 1 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition 

• idle (after warm up)