The back door can be locked/unlocked and opened/closed by the following procedures.
Automatic door locking and unlocking systems
Locking and unlocking the back doorPark/neutral position switch ASSY (U241E/U140F)
REPLACEMENT
1. REMOVE ENGINE UNDER COVER NO.1
2. SEPARATE TRANSMISSION CONTROL CABLE ASSY
(a) Remove the nut from the control shaft lever.
(b) Disconnect the control cable from the control shaft lever.
(c) Remove the clip and disconnect the control cable from
the control cable bracket. ...