The back door can be locked/unlocked and opened/closed by the following procedures.
Front seat ASSY LH (manual seat type
COMPONENTS
OVERHAUL
CAUTION:
Wear safety gloves, because the cutting surface of the seatback frame
and seat adjuster may
injure your hand.
Work must be at least 90 seconds after the ignition switch is turned
to the LOCK position and
the negative (-) terminal cable is disconnected ...