Intake Door Control Specification
WARNING: This page is about a different car, the 2011 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
Intake door position is basically fixed at FRE when FRE indicators of DEF switch and intake switch turn ON, and fixed at REC when REC indicator of intake switch turns ON.
Intake door automatic control selects FRE, 20 - 80%FRE, or REC depending on a target air mix door opening angle, based on in-vehicle temperature, ambient temperature, and sunload.