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

Hyundai Sonata LF 2014-2019 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.
Seat Belt Pretensioner (BPT) Repair procedures
Removal 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the door scuff trim. (Refer to Body - "Interior Trim") 3. Remove t ...

Emergency Fastening Device (EFD) Components and Components Location
Components ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components 1.  Timing chain2.  Timing chain guide3.  Timing chain arm4.  Timing chain auto tensioner5.  Timing chain cover6.  Drive belt idler7.  Water pump gasket8.  Water pump9.  Water pump pulley10. Crank shaft pulley11. Front oil seal12. Alternat ...

Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
Troubleshooting Trouble SymptomProbable causeRemedyVehicle pulls to one sideScoring of driveshaft ball jointReplaceWear, rattle or scoring of wheel bearingReplaceDefective front suspension and steeringAdjustment or ReplaceVibrationWear, damage or bending of driveshaftReplaceDriveshaft rattle an ...

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