Intake Sensor
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.
The intake sensor (2) is located on the evaporator. It converts air temperature after it passes through the evaporator (1) into a resistance value which is then input to the unified meter and A/C amp.
Courtesy of NISSAN MOTOR CO., U.S.A.