1. Seat Belt Warning Switch: This switch detects whether the driver's seat belt is fastened or not. When the seat belt is unbuckled, it triggers a warning light on the dashboard and an audible chime.
2. Seat Sensor: The seat sensor detects the presence of a passenger in the driver's seat. It uses this information to activate or deactivate certain vehicle features, such as the airbag and seat belt pre-tensioners.
3. Seat Adjustment Controls: These wires connect the seat adjustment controls (e.g., forward, backward, up, down) to the seat motor, allowing the driver to adjust the seat position.
4. Lumbar Support Control: If the vehicle has adjustable lumbar support, these wires connect the lumbar support control to the relevant mechanism, enabling the driver to adjust the lower back support.
5. Heated Seat Control: If the vehicle has heated seats, these wires connect the heated seat control switch to the heating element in the seat. When the heated seat is activated, these wires carry power to the heating element, warming the seat.
6. Occupancy Sensor: Some models may have an occupancy sensor under the driver's seat, which detects the weight distribution on the seat. This information is used to determine the appropriate level of airbag deployment in case of a collision.
7. Anti-Theft System: In some cases, the wires under the driver's seat may be part of the vehicle's anti-theft system. These wires may connect to a transponder or immobilizer that prevents unauthorized engine starting.
Please note that the exact configuration and purpose of these wires may vary depending on the specific year, model, and trim level of your Peugeot 406 HDI. If you have any questions or need further assistance, it is recommended to consult your vehicle's owner's manual or a qualified mechanic.
