DTC B1A64-86: Error Signal Received From Solar Radiation Sensor [Dash-Electrical Supply Unit]: 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 B1A64:86 [DASH-ELECTRICAL SUPPLY UNIT] DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Error signal received from solar radiation sensor |
| Detection condition |
- The dash-electrical supply unit detects a sunlight intensity signal error on the left side of the windshield received from the solar radiation sensor.
|
| Fail-safe |
- Fixes the solar radiation sensor (left side) input value at 0 W/m2
and performs control.
|
| Possible cause |
- DTCs are stored in the body control module (BCM)
- Solar radiation sensor connector or terminal malfunction
- Solar radiation sensor malfunction
- Body control module (BCM) connector or terminal malfunction
- Short to ground in solar radiation sensor LIN communication line
- Short to power supply in solar radiation sensor LIN communication line
- Open circuit in solar radiation sensor LIN communication line
- Body control module (BCM) malfunction
- Dash-electrical supply unit malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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