Hyundai Santa Fe (TM): Seat Belt Pretensioner / Emergency Fastening Device (EFD). Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Restraint / Seat Belt Pretensioner / Emergency Fastening Device (EFD). Description and operation

Description
The Emergency Fastening Device (EFD) operates at the same time with the Seat Belt Pretensioner when it satisifies the deployment condition after a collision. It is an auxiliary equipment to prevent a driver and passenger from breaking away by pulling the seat belt toward the anchor side after a collision. It is located near the anchor on the driver and passenger seat and is supported by two cables.
  
Never measure the resistance of the anchor pretensioner directly, the current of the measuring device may cause unexpected airbag deploy.

    Removal 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2.

    Components 1. Emergency Fastening Device (EFD) System

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Description and operation

    Description • PDW consists of 8 sensors (front : 4 units, rear : 4 units) that are used to detect obstacles and transmit the result in three separate warning levels, the first, second and third to IBU via LIN communication.

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Troubleshooting

    Troubleshooting Diagnosis with Diagnostic tool 1. In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool). The diagnostic system (Diagnostic tool) provides the following information.

     
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