Driver side

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.

Light over the sunload sensor (3) from the 90° left and the 60° up with incandescent light of approximately 100 W.
The distance between the sensor and the light should be approximately 100 mm (3.94 in.).
Measure the voltage between terminal "1" and terminal "3" of sunload sensor connector (1) by using voltmeter (2).
If check result is not as specified, replace sunload sensor.

Sunload sensor specification

More than 0.3 V

Fig 1: Measuring Voltage Between Terminal 1 And 3 Of Sunload Sensor Connector Using Voltmeter
Courtesy of SUZUKI OF AMERICA CORP.