I am receiving an r12/1 and r12/2 code with my srs light on. This points to the seat belt pretensioner on both seats. I was able to pull the seats out, and test the wiring, but when i try to get the pretensioner out it is encased in a thick aluminum housing that is welded to the frame of the seat. I understand that this is required to make sure that the pretensioner has a sturdy hold if triggered. My question is how do i get it out to test the resistance of the pretensioner. It doesn't look possible without taking the front leather and padding off of the seat. Has anyone done this before?