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IGT signal
Fig 1: IGT Signal Inspection By Using Oscilloscope (Reference)
Courtesy of MAZDA MOTORS CORP.
PCM terminal
IGT1 26(+)-103(-)
IGT2 1(+)-103(-)
IGT3 52(+)-103(-)
IGT4 27(+)-103(-)
IGT5 78(+)-103(-)
IGT6 82(+)-103(-)
Oscilloscope setting: 2V/DIV (Y), 10ms/DIV (X), DC range