Audi P0638, PWM/Duty cycle explained

Описание к видео Audi P0638, PWM/Duty cycle explained

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In this video i diagnose a Audi Q5 v6 3.0Tdi with a P0638 code.
I explain why a diesel engine needs a throttle valve in the first place!
And we get to learn more about Pwm and Duty cycle.

Pwm/Duty cycle driver tool available at; www.ryansautomotive.ie

I Hope you enjoy the video!
DiagnoseDan fixed it again, see you next time guys!

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