Solar Radiation Sensor Inspection

WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Shine a fluorescent light or expose the solar radiation sensor to natural sunlight.
Connect positive (+) lead to terminal A and negative (-) lead to terminal B of the solar radiation sensor.
- If the output voltage is not over 0.02V and not less 0.45 V , replace the solar radiation sensor.
  
  Fig 1: Inspecting Solar Radiation Sensor
  Courtesy of MAZDA MOTORS CORP.