Oscilloscope Patterns and Waveforms

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 safing
- 2 V/DIV (Y), 20 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, NC off)