Kia Soul: Emergency Fastening Device (EFD). Description
Emergency Fastening Device (EFD) is deployed with Belt Pretensioner at the same time to pull down the seat belt strongly If it gets into its deploy condition after a collision. It is located at near anchor on driver and passenger seat and it is an equipment to make up for the existing short stroke. EFD is an auxiliary equipment to prevent a driver and passenger from breaking away doubly as seat belt is not loosened being toward anchor side after a collision.
Never measure resistance of EFD directly, current of measuring device may cause unexpected airbag deploy.