Electric Blower By Cars How Can I Adjust Throttle On A 99 Volkswagen Passat?

How can i adjust throttle on a 99 Volkswagen passat? - electric blower by cars

I have a period of 99 Volkswagen Passat. The idle is very low. the engine is turned off when you got the car or juice taken a more energy (electricity) do not leave in the Control Panel contains all the information prescribed Fans AC / heater fan, air conditioning and shade. How do I fix