With 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 B103A:63 [DASH-ELECTRICAL SUPPLY UNIT (US)] DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Seat warmer unit (RH) circuit malfunction (Thermistor side) |
| Detection condition |
- The dash-electrical supply unit detects the output time-out status on the heater side due to a malfunction on the thermistor side of the seat warmer unit (RH).
|
| Fail-safe |
- Stops the driver and front passenger's seat warmer output.
|
| Possible cause |
- DTCs are stored in the dash-electrical supply unit.
- Other DTCs related to seat warmer unit (RH) circuit are stored
- Seat warmer control unit connector or terminal malfunction
- Connector C-62 malfunction
- Short to power supply in any of following seat warmer unit (RH) circuits:
- Front seat (RH) malfunction
- Seat warmer unit (RH) malfunction
- Seat warmer control unit malfunction
- Dash-electrical supply unit malfunction
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 Courtesy of MAZDA MOTORS CORP.
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