Focus L4-2.0L DOHC VIN 5 (2003)
Seat Belt Tensioner: Description and Operation
Front passenger Safety Belt Buckle and Pretensioner
The front passenger safety belt buckle and pretensioner is seat mounted and incorporate a safety belt buckle switch. In the event of a front impact the
air bag control module will deploy the pretensioner provided the safety belt buckle is fastened. The front passenger safety belt buckle pretensioner has
a lower deployment threshold than that required by the air bags. Hence it is possible during a minor collision, which exceeds the deployment
threshold, that only the safety belt pretensioner will deploy. The air bag control module receives information on the status of the safety belt buckle
from a switch contained in the buckle.
A new front passenger safety belt buckle and pretensioner must be installed following deployment.
Driver Safety Belt Retractor and Pretensioner
In the event of a front impact the air bag control module will deploy the pretensioner provided the safety belt buckle is fastened. The driver safety belt
retractor pretensioner has a lower deployment threshold than that required by the air bags. Hence it is possible during a minor collision, which exceeds
the deployment threshold, that only the safety belt pretensioner will deploy. The air bag control module receives information on the status of the safety
belt buckle from a switch contained in the buckle.
A new driver safety belt retractor and pretensioner must be installed following deployment.
