IGT Control Signal

PCM terminal:
- 3F (+) <-> 4A (-)
- 3l (+) <-> 4A (-)
Oscilloscope setting: 1.0 V/DIV (Y), 50 ms/DIV (X), DC range
Vehicle condition: Idling after warm-up

Fig 1: Identifying Fuel IGT Control Signal
Courtesy of MAZDA MOTORS CORP.