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I want to know if my seat belt pretensioner is good or bad? My vehicle was in an accident and the seat belts look like the are working good, they still retract back and forth. I just want to be sure if they are good or bad. Because I know that they are supposed to lock up and stay locked after the accident.
Topic starter
Posted : 09/19/2021 11:27 pm
First you can try to buckle up and see if it allows you to buckle up and the seat belt light turns off on the dashboard. Next step is to pull on the seat belt with a quick jerk and see if the seat belt locks. That is the basic pull test.
After the vehicle is in accident there is a pyro sensor that is in the seat belt that is initiated to lock the belt. This will store a code and keep your airbag light on. You can also use a diagnostic scan tool to see if there are any seat belt codes stored in the system. To test the pyro sensor that is in the seat belt you can use a diagnostic scan tool to see if it has any seat belt codes or use a multimeter to measure OHMs of the seat belt. The OHM reading Good seat belt pretensioner will give you a reading of 2 - 3 OHMs.
Posted : 09/20/2021 1:55 am