Solar Radiation Sensor Inspection

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the following parts:
1. Center speaker grille (See SPEAKER GRILLE REMOVAL/INSTALLATION .)
2. Front center speaker (See FRONT CENTER SPEAKER REMOVAL/INSTALLATION .)
Remove the solar radiation sensor. (See SOLAR RADIATION SENSOR REMOVAL/INSTALLATION .)
Shine a fluorescent light or expose the solar radiation sensor to natural sunlight.
Connect the positive (+) lead to terminal A and negative (-) lead to terminals B, C of the solar radiation sensor, and verify that the voltage value is output.

Courtesy of MAZDA MOTORS CORP.

If the voltage is 0 V, replace the solar radiation sensor. (See SOLAR RADIATION SENSOR REMOVAL/INSTALLATION .)