Heated Steering Wheel System Operates Constantly: Notes
HEATED STEERING WHEEL SYSTEM OPERATES CONSTANTLY [HEATED STEERING WHEEL] DESCRIPTION AND POSSIBLE CAUSE
| Troubleshooting item |
Heated steering wheel system operates constantly |
| Description |
Heated steering wheel warms steering wheel even though heated steering wheel switch is off |
| Possible causes |
Heated steering wheel switch is always ON
- Heated steering wheel switch malfunction
- Climate control unit malfunction
Heated steering wheel control unit falsely detects heated steering wheel switch is ON
- Heated steering wheel control unit malfunction
- Clock spring malfunction
- Open circuit in heated steering wheel control unit control circuit
- Short to ground in heated steering wheel control unit control circuit
- Short to power supply in heated steering wheel control unit control circuit
- Open circuit in clock spring control circuit
- Short to ground in clock spring control circuit
- Short to power supply in clock spring control circuit
- Dash-electrical supply unit malfunction
- CAN communication line malfunction
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 Courtesy of MAZDA MOTORS CORP.
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