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IGT1, IGT2, IGT3, IGT4 Control

Courtesy of MAZDA MOTORS CORP.

PCM terminals

IGT1 (ignition coil No. 1): 1AG (+)-body ground (-)
IGT2 (ignition coil No. 2): 1AE (+)-body ground (-)
IGT3 (ignition coil No. 3): 1AF (+)-body ground (-)
IGT4 (ignition coil No. 4): 1AD (+)-body ground (-)

Oscilloscope setting

2 V/DIV (Y), 200 ms/DIV (X), DC range

Vehicle condition

Idle after warm up