Intake Manifold Runner Position Sensor - G336-, Checking: General Description
WARNING: This page is about a different car, the 2018 Audi A3 Quattro, 2017 Audi A3 Quattro, 2016 Audi A3 Quattro, 2016 Audi A3, and 2015 Audi A3 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
The Intake Manifold Runner Position Sensor -G336- provides the Engine Control Module -J623- with the position of the intake manifold runner flaps. The Engine Control Module -J623- can then use actuators to adjust these flaps to be open or closed in order to provide longer or shorter intake runners depending on the ambient conditions available at the time; plus, depending on the specific engine speed, to increase engine efficiency.