Signal Waveform & Data
- Ch A : INJ HIGHSIDE signal during fuel injection (Normal idle state)
- Ch B : INJ LOWSIDE signal during fuel injection (Normal idle state)
- Ready : Pre-energizing range for the quick response of injector.
ECU drives specific duty pulse to a injector.
During "Ready", Injector doesn't work yet. The supply voltage to a injector is 12V.
- Rise : ECU starts to peak current rapidly for injector working.
The supply voltage is upturned from 12V to 55V. At the peak of current, injector starts to open.
- Peak/Hold : Holding the peak current until the injector would be completely open.
- Hold : ECU drives specific duty pulse for holding the injector's open state.
The injector will quickly close once the PCM discontinues current.