capacitor 1????what is it?

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norfolk 1

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nr16
looking through some readings i took from car earlier i noticed capacitor 1 reads 79.15 volts???what is capacitor 1??79.15 volts seems extremely high
 
That's the injector drive capacitor voltage.
The injectors are Piezoelectric injectors, which require a spike of high voltage and current to fire them. The capacitor voltage, is the voltage of the drive capacitor, which is monitored, as if its too low, the injectors can't work.
 
That's the injector drive capacitor voltage.
The injectors are Piezoelectric injectors, which require a spike of high voltage and current to fire them. The capacitor voltage, is the voltage of the drive capacitor, which is monitored, as if its too low, the injectors can't work.
right thanks for the explantion.learning more day by day
 
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