G35 Sedan 2WD V6-3.5L (VQ35DE) (2005)
Solar Sensor: Description and Operation
Sunload Sensor Circuit
COMPONENT DESCRIPTION
Sunload Sensor
The sunload sensor is located on the driver's side defroster grille. It detects sunload entering through windshield by means of a photo diode. The sensor
converts the sunload into a current value which is then input into the display and A/C auto amp.
SUNLOAD INPUT PROCESS
The display and A/C auto amp. also includes a processing circuit which averages the variations in detected sunload over a period of time. This prevents
drastic swings in the ATC system operation due to small or quick variations in detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload detected by the sunload sensor will vary
whenever the trees obstruct the sunlight. The processing circuit averages the detected sunload over a period of time, so that the (insignificant) effect of
the trees momentarily obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly after entering a long
tunnel, the system will recognize the change in sunload, and the system will react accordingly.