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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> General Information >> Engine Performance >> Waveforms - Injector Pattern Tutorial - General Information >> Voltage Waveform Samples >> Example #6 - Current Controlled Driver

Example #6 - Current Controlled Driver

This known-good pattern from a Ford 3.0L V6 PFI VIN [U] illustrates that a zener diode inside the computer is used to clamp the injector's inductive kick to 35-volts on this system. See Fig 1.

Fig 1: Injector Bank - Known Good - Voltage Pattern
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