Checking the Seat Belt Tensioner: Check
Insert a wire in the pipe on the seat belt tensioner as shown.
Check the position of the piston in the seat belt tensioner.
Piston position A:
The seat belt tensioner has deployed. Replace both the seat belt (inertia) reels and the seat belt tensioners. See Front Seat Belt .
Piston position B:
The seat belt tensioner has not deployed.
No action is required
NOTE:
If any airbag has deployed, all seat belts and tensioners must be replaced.