DTC B10AD-09: Humidity Sensor/Solar Radiation Sensor/Auto Light Sensor/Rain Sensor Malfunction (BCM): Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC B10AD:09 (BCM) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Humidity sensor/solar radiation sensor/auto light sensor/rain sensor malfunction |
| Detection condition |
- The body control module (BCM) detects the humidity sensor/solar radiation sensor/auto light sensor/rain sensor malfunction.
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| Fail-safe |
- If the light switch is in the AUTO position, the TNS (parking lights) and headlights LO is turned on.
|
| Possible cause |
- Humidity sensor/solar radiation sensor/auto light sensor/rain sensor connector or terminal malfunction
- Body control module (BCM) connector or terminal malfunction
- Short to ground in humidity sensor/solar radiation sensor/auto light sensor/rain sensor LIN communication line
- Short to power supply in humidity sensor/solar radiation sensor/auto light sensor/rain sensor LIN communication line
- Open circuit in humidity sensor/solar radiation sensor/auto light sensor/rain sensor LIN communication line
- Humidity sensor/solar radiation sensor/auto light sensor/rain sensor malfunction
- Body control module (BCM) malfunction
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 Courtesy of MAZDA MOTORS CORP.
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