•  Adjusts the amount of blowby gas conducted to the intake air system according to the intake manifold vacuum.

•  Regulates the air (including blowby gas) passing from the cylinder head cover to the dynamic chamber during low load (when vacuum in the intake manifold is high) to ensure an optimum air/fuel ratio.

•  Heater operates by the signal from PCM when IAT is low, and anti-icing is done. (with PCV valve heater)