Rear inner handle

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the rear door trim. (See REAR DOOR TRIM REMOVAL/INSTALLATION .)
Disconnect each cable and remove the rear inner handle.
Install in the reverse order of removal.

Fig 1: Identifying Rear Inner Handle & Door Lock Cables

Courtesy of MAZDA MOTORS CORP.