Seat belt tensioner, checking

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The illustrations in this service information are used for different model years and / or models. Some variation may occur. However, the essential information in the illustrations is always correct.

CAUTION:

When replacing deployed seat belt tensioners, seat belt buckles and end mountings must always be replaced.

Seat belt tensioners can be checked in two different ways:

Check for any stored diagnostic trouble code (DTC) using VIDA
Physical check as follows.

Fig 1: Identifying Piston Positions

Courtesy of VOLVO CARS OF NORTH AMERICA.

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

Check the piston position in the seat belt tensioner.

Piston position A:

The seat belt tensioner has deployed. Replace the seat belt tensioner, seat belt buckle and end mounting.

Piston position B:

The seat belt tensioner has not deployed. No corrective action is required.