Oscilloscope Patterns and Waveforms

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




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