Oscilloscope Patterns and Waveforms

Fuel injector check signal




- PCM terminals: 2B(+)-Body ground(-)
- Oscilloscope setting: 2 V/DIV (Y), 10 minutes/DIV (X), DC range
- Vehicle condition: Idle after warm up (no load, P/S off, A/C off)

Fuel injection control




- PCM terminals
- Fuel Injection No.1: 3B(+)-Body ground(-)
- Fuel Injection No.2: 3E(+)-Body ground(-)
- Fuel Injection No.3: 3H(+)-Body ground(-)
- Fuel Injection No.4: 3K(+)-Body ground(-)

- Oscilloscope setting: 2 V/DIV (Y), 20 minutes/DIV (X), DC range
- Vehicle condition: Idle after warm up (no load, P/S off, A/C off)