S90 L6-2.9L VIN 96 B6304S (1998)
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Disconnect battery negative lead.
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Remove SRS ignition cable igniter connector from seat belt tensioner.
Removing Seat Belt Tensioner And Seat Belt
WARNING: Under no circumstances use an ohmmeter or other live measuring instrument to take readings on a disconnected non-deployed
pyrotechnical seat belt tensioner. This could deploy the seat belt tensioner!
Remove:
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seat belt from seat mounting (1 x 16 mm screw).
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seat belt from B-post mounting (1 x 16 mm screw).
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seat belt (inertia) reel from B-post (1 x 16 mm screw).
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seat belt tensioner (1 x Torx 25).
WARNING: The seat belt tensioner must never be taken apart, repaired or moved to another vehicle. Follow instructions in section F on
handling a replaced seat belt tensioner.