Solar Radiation Sensor Inspection

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the center speaker grille. (See SPEAKER GRILLE REMOVAL/INSTALLATION .)
Remove the 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 terminals B, C and negative (-) lead to terminal A of the solar radiation sensor, and verify that the voltage value is output.

Fig 1: Connecting Positive And Negative Leads To Solar Radiation Sensor Terminals
Courtesy of MAZDA MOTORS CORP.
- If the voltage is 0 V, replace the solar radiation sensor. (See SOLAR RADIATION SENSOR REMOVAL/INSTALLATION .)