Sunload Sensor
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
Sunload sensor measures sunload amount. This sensor converts the sunload to a voltage signal by photodiode and transmits the signal to the A/C auto amp..
Courtesy of NISSAN MOTOR CO., U.S.A.