norfolk 1

Member

• Jan 21, 2021

• #1

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

 

Nodge68

Well-Known Member

• Jan 21, 2021

• #2

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.

 

norfolk 1

Member

• Jan 21, 2021

• #3

Nodge68 said:

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.

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right thanks for the explantion.learning more day by day