Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)

Ignition coil control signals




- PCM terminals
- No.1 cylinders: 52 (+) - 26 (-)
- No.2 cylinders: 104 (+) - 26 (-)
- No.3 cylinders: 102 (+) - 26 (-)
- No.4 cylinders: 78 (+) - 26 (-)
- No.5 cylinders: 103 (+) - 26 (-)
- No.6 cylinders: 101 (+) - 26 (-)

- Oscilloscope setting
- 5 V/DIV (Y), 20 ms/DIV (X), DC range
- Vehicle condition
- Idle after warm up (no load)