Oscilloscope Patterns and Waveforms

IGT1, IGT2, IGT3, IGT4 control signals




- PCM terminals
- IGT1 (ignition coil No.1): 2BA(+)-body ground(-)
- IGT2 (ignition coil No.2): 2AW(+)-body ground(-)
- IGT3 (ignition coil No.3): 2AX(+)-body ground(-)
- IGT4 (ignition coil No.4): 2AT(+)-body ground(-)

- Oscilloscope setting: 4 V/DIV (Y), 0.01 minute/DIV (X), DC range
- Vehicle condition: Idle after warm up (no load, P/S off, A/C off)