Liberty 4WD L4-2.4L DOHC VIN 1 (2005)
cushion is constructed of a coated nylon fabric.
The airbag inflator is a dual-initiator, pyrotechnic-type unit that is secured to and sealed within the air-bag housing. The passenger airbag is connected to
the vehicle electrical system through two dedicated take outs of the instrument panel wire harness with connector insulators that connect directly to the
two inflator initiators. The connector insulators are uniquely keyed and color-coded to ensure they can only be connected to the correct initiator.
The passenger airbag cannot be repaired, and must be replaced if deployed, faulty, or in any way damaged. If the passenger airbag is deployed, the
passenger airbag door and both passenger airbag mounting brackets must also be replaced. The passenger airbag door and the passenger airbag mounting
brackets are available for individual service replacement.
The multistage passenger airbag is deployed by electrical signals generated by the Airbag Control Module (ACM) through the passenger airbag squib 1
and squib 2 circuits to the two initiators in the air-bag inflator. By using two initiators, the airbag can be deployed at multiple levels of force. The force
level is controlled by the ACM to suit the monitored impact conditions by providing one of three delay intervals between the electrical signals provided
to the two initiators. The longer the delay between these signals, the less forcefully the airbag will deploy.
The pyrotechnic-type inflator assembly includes two separate internal chambers filled with solid propellant. When the ACM sends the proper electrical
signal to the airbag initiator, the initiator converts the electrical energy into chemical energy. This chemical energy ignites the solid propellant. As the
solid propellant burns it produces a large quantity of inert gas. The inflator is sealed to the airbag cushion so that the inert gas is directed into the airbag
cushion, causing the cushion to inflate. As the cushion inflates, the passenger airbag door will split at predetermined tear seam lines on the inside surface
of the door and the door will pivot out of the way. Following a passenger airbag deployment, the airbag cushion quickly deflates by venting the inert gas
through vent holes within the fabric used to construct the sides of the airbag cushion.
Typically, both initiators are used during an airbag deployment event. However, it is possible for only one initiator to be used during a deployment due to
an airbag system fault; therefore, it is necessary to always confirm that both initiators have been used in order to avoid the improper disposal of
potentially live pyrotechnic materials.
