Seat Belt Tensioner Inspection
- There are 2 methods of determining seat belt tensioner activation. Start by pulling seat belt out and releasing it. If belt normally extends easily to full length, tensioner has not been activated. If either belt sticks, jerks when reeling and unreeling or fails to reel, both belts must be replaced.
- If seat belt tensioner activation cannot be determined, turn ignition switch to OFF position. Disconnect negative battery cable. Remove "B" post inner panel. Insert a steel rod into tensioner tube to establish position of plunger.
- On 850, S70 and V70, if plunger position is near bottom of tensioner tube, seat belt tensioner has been activated and both belts must be replaced. If plunger position is near top of tensioner tube, seat belt tensioner has not deployed.
- On 960, S90 and V90, if plunger position is near bottom of tensioner tube, seat belt tensioner has not deployed. If plunger position is near top of tensioner tube, seat belt tensioner has been activated and both belts must be replaced.