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. 700 rpm, no load, P/S off, A/C off).




CKP sensor signal
(+)
PCM terminals
- 2D (+) - 2H (-)

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

Vehicle condition
- Idle after warm up (engine speed approx. 700 rpm, no load P/S off, A/C off)




(-)
PCM terminals
- 2G (+) - 2H (-)

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

Vehicle condition
- Idle after warm up (engine speed approx 700 rpm, no load, P/S off, A/C off)