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Toyota prius 3rd gen Occupant Detection ECU (W2)(W3) 89952-47021 Toyota Prius 3 rd Generation (XW30) Occupant Detection ECU Assembly Wiring Guide: DIY Pinout Diagram Last Updated: What is: TheThe Occupant Detection ECU (Electronic Control Unit) is a small control computer that is part of a vehicle’s airbag system. It receives signals from the occupant detection sensors located in the seats to determine whether a seat is occupied and, if so, the size and weight of the occupant. This information helps the system decide whether to deploy the airbag and at what intensity during a collision, improving passenger safety and preventing unnecessary airbag deployment. 1. Introduction The Toyota Prius 3rd generation Occupant Detection ECU is a safety control unit located under the passenger seat. It processes signals from weight sensors in the seat cushion to identify whether th...

Toyota prius 3rd gen Weight Detection Sensor Assembly (W1)(W4)(W6)(W7) 04004-71147 Toyota Prius 3 rd Generation (XW30) Toyota Prius 3 rd Generation (XW30) Weight Detection Sensor Assembly Wiring Guide: DIY Pinout Diagram Last Updated: What is: The Weight Detection Sensor Assembly is the hardware inside the passenger seat that detects seat weight/load, allowing the car’s safety system to decide if and how the passenger airbag should deploy. 1. Introduction The Toyota Prius 3rd Gen Toyota Prius 3rd Gen Weight Detection Sensor Assembly is a seat-mounted sensor located in the front passenger seat cushion. It measures the occupant’s weight and sends signals to the Occupant Detection ECU, allowing the SRS system to determine airbag deployment—preventing unnecessary or dangerous airbag activation for children or light passengers. Weight Detection Sens...

Toyota prius 3rd gen Seat Inner Belt Assembly (R4)(W5) 73210-47100-B1, 73220-47090-B1 Toyota Prius 3 rd Generation (XW30) Seat Inner Belt Assembly Wiring Guide: DIY Pinout Diagram Last Updated: What is: The Seat Inner Belt Assembly is a critical safety component that combines mechanical locking and electronic sensing functions to protect vehicle occupants. 1. Introduction       The Seat Inner Belt Assembly in the Toyota Prius 3rd generation (2009–2015) is a key component of the vehicle’s seat belt and airbag safety system. It is mounted on the inner side of each front seat, next to the center console, and serves as the buckle unit where the seat belt tongue is inserted and locked.      This assembly not only ensures the seat belt remains securely fastened during a collision but also includes a buckle switch sensor. The sensor detects wheth...