When installing the belt, make sure not to damage the retractor.
Remove the rear pillar trim.
(Refer to Interior Trim - "Rear Pillar Trim")
Loosen the rear seat belt upper anchor (A) mounting bolt.
After loosening the mounting bolt, then remove the rear seat belt retractor (B).
Tightening torque :
39.2 ~ 53.9 N.m (4.0 ~ 5.5 kgf.m, 28.8 ~ 39.8 lb-ft)
Install in the reverse order of removal.
Make sure the connector is plugged in properly.
Replace any damaged clips.