Oscilloscope Patterns and Waveforms

Fuel Injector Control Signal
- PCM terminal
- No.1: 4Q(+)-4AB(-)
- No.2: 4U(+)-4AB(-)
- No.3: 4Y(+)-4AB(-)
- No.4: 4AC(+)-4AB(-)
- No.5: 4AG(+)-4AB(-)
- No.6: 4AK(+)-4AB(-)

- Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range
- Vehicle condition: idle after warm up