Sedan Jr41
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
At the onset of an impact event, each tensioner uses a pyrotechnic device which is triggered simultaneously with the front airbags to rapidly retract the seat belts. With the slack removed, the occupant's forward motion in an impact will be reduced as will the likelihood of contacting interior components. After an impact that deploys the airbags, the front seat belt & retractor/tensioner assembly must be replaced.
The Occupant Restraint Controller (ORC) monitors the seat belt tensioner circuit resistance and reports active and stored Diagnostic Trouble Codes (DTC's) if any problem is found.
WARNING:
WHEN THE FRONT AIRBAG IS DEPLOYED, THE TENSIONER WILL HAVE DEPLOYED AND MUST BE REPLACED. THIS WILL REQUIRE THE ENTIRE FRONT SEAT BELT & RETRACTOR ASSEMBLY TO BE REPLACED. FAILURE TO DO SO COULD RESULT IN OCCUPANT PERSONAL INJURY OR DEATH.