Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference)




Fuel injection control
PCM terminals
- Fuel Injection No.1: 4Z(+) - 1C(-)
- Fuel Injection No.2: 4W(+) - 1C(-)
- Fuel Injection No.3: 4AD(+) - 1C(-)
- Fuel Injection No.4: 4AA(+) - 1C(-)

Oscilloscope setting
- 4 V/DIV (Y), 10 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load, P/S off, A/C off)