Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)




IGT1, IGT2 control signals
PCM terminals
IGT1 (No.1 and No.4): 1A(+) - 1D(-)
IGT2 (No.2 and No.3): 1B(+) - 1C(-)

Oscilloscope setting
- 4 V/DIV (Y), 0.01 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)