Hyundai Santa Fe: Passenger Airbag (PAB) Module. Description and Operation - Airbag Module - RestraintHyundai Santa Fe: Passenger Airbag (PAB) Module. Description and Operation

Description

Passenger Airbag (PAB) module is located in the passenger crash pad. This PAB contains 2 firing squibs of airbag and 1 firing squib of active vent. Depending of crash speed or the tightening of seat belt, it is decided a timing about both 2 firing squibs of airbag and 1 firing squib of active vent. At the moment of vehicles collisions, the firing squib of active vent make airbag distended and then consecutively leaked gases of airbag through a hole at once. These operations reduce an injury of the passenger's head. At first, the active vent sets a rapid deployment of airbag by keeping the pressure, after deployment of airbag it emits the gases of upper airbag. The Working Principle of Tether Cutter: When receive an electrical signal, Tether Cutter cuts a strap which is been attached Active vent in order to open a hole of upper airbag.
The working range of Active Vent
1.
If occupant in passenger seat is not belted, active vent is disposed in the end of crash event regardless of crash severity.
2.
If occupant is belted and crash severe enough to require 2 stage passenger airbag deployment is occurred, active vent is activated to optimize occupant protection.
3.
Low-Speed + Belted : Inflator of Primary Fire + 2 Stage & Active Vent disposal in the end of crash event.
Never attempt to measure the circuit resistance of the airbag module (squib) even if you are using the specified tester. If the circuit resistance is measured with a tester, accidental airbag deployment will result in serious personal injury.

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