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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 700 rpm no load, P/S off, A/C off)