Oscilloscope Patterns and Waveforms

1. Power supply side of injector

Between resistor and multiport fuel injection relay
1. Run the engine at idle speed.
2. Connect the probe to the oscilloscope pick-up point 1 as shown in the circuit diagram, and check the waveform.












Between resistor and injector

1. Run the engine at idle speed.
2. Connect the probe to the oscilloscope pick-up point 2 as shown in the circuit diagram, and check the waveform of each injector.