Hyundai Elantra: Seat Belt Pretensioner / Emergency Fastening Device (EFD) Description and Operation

Hyundai Elantra AD (2016-2020) Service 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.
Emergency Fastening Device (EFD) Components and Components Location
Components 1. EFD(Emergency Fastening Device) System ...

Emergency Fastening Device (EFD) Repair procedures
Removal 1. Disconnect the battery negative cable and wait for at least 3 minutes before beginning work. 2. Remove the front seat. (Refer to Body - "Front Seat Assembly") 3. Remove the rea ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Air bag inflation conditions
Front air bags Front air bags and the driver’s knee air bag are designed to inflate in a frontal collision depending on the the severity of impact of the front collision. Side and curtain air bags Side and curtain air bags are designed to inflate when an impact is detected by side col ...

Hyundai Elantra AD (2016-2020) Service Manual: Specifications
Specification Ignition System Ignition Coil ItemSpecification Primary Coil Resistance (?)0.61 ± 15% [20°C (68°F)]Secondary Coil Resistance (k?)7.5 ± 15% [20°C (68°F)] Spark Plug ItemSpecificationTypeELR9IQP9+Gap0.8 ~ 0.9 mm (0.0314 ~ 0.0354 in.) Charging System Alter ...

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