Hatchback Model

Disable air bag system. Refer to Disabling Air Bag System :Advanced Air Bag.
Remove rear seat back. Refer to REAR SEAT REMOVAL AND INSTALLATION .
Remove quarter lower rear trim. Refer to FLOOR CARPET REMOVAL AND INSTALLATION .
Remove quarter inner lower front cap (1) as shown in figure.

Fig 1: Identifying Quarter Inner Lower Front
Courtesy of SUZUKI OF AMERICA CORP.
Remove bolts and remove rear side-air bag (1).

Fig 2: Identifying Rear Side-Air Bag & Bolts
Courtesy of SUZUKI OF AMERICA CORP.
Disconnect rear side-air bag connector (1) as shown in figure.
1. Unlock lock button (2).
2. With lock button unlocked, disconnect connector.
  
  Fig 3: Unlocking & Disconnecting Connector
  Courtesy of SUZUKI OF AMERICA CORP.