Checking Seat Belt Tensioner Piston Position

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Piston Positions

Courtesy of VOLVO CARS OF NORTH AMERICA.

Insert a wire in the pipe on the seat belt tensioner as illustrated.

Check seat belt tensioner piston position.

Piston in position A:

The seat belt tensioner has deployed. Replace both seat belt (inertia) reels with seat belt tensioner.

Piston in position B:

The seat belt tensioner has not deployed.