Without Position Memory System: 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 B1520:87 [DASH-ELECTRICAL SUPPLY UNIT] DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Communication error with seat warmer control unit |
| Detection condition |
- The dash-electrical supply unit cannot receive the signals from the seat warmer control unit.
|
| Fail-safe |
- Stops the driver and front passenger's seat warmer output.
|
| Possible cause |
- Seat warmer control unit connector or terminal malfunction
- Dash-electrical supply unit connector or terminals malfunction
- Short to ground in seat warmer control unit LIN communication line
- Short to power supply in seat warmer control unit LIN communication line
- Open circuit in seat warmer control unit LIN communication line
- Seat warmer control unit malfunction
- Dash-electrical supply unit malfunction
|
 Courtesy of MAZDA MOTORS CORP.
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