The back door can be locked/unlocked and opened/closed by the following procedures.
Locking and unlocking the back door
Opening/closing the back door from inside the vehicle (vehicles with a power back door)
Press and hold the switch to open or close, when the power back door is unlocked. (A buzzer sounds.)
Pressing the switch while the back
door is opening/closing stops the
operation. 
Side doors
Opening the back door from outside the vehicleSwitch failure
Description
This dtc is output when the sliding roof drive gear (sliding roof ecu)
detects that the slide open or
tilt up switch in the overhead junction block is stuck for 30 seconds or more.
Wiring diagram
Refer to dtc b2341 (see page rf-11).
Inspection procedure
Read value of i ...
Integration relay
On-vehicle inspection
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Inspect integration relay
Notice:
The efi relay ...
Removal
Notice:
Do not heat the vehicle body, emblem and name plate
excessively.
Hint:
When removing the emblem and name plate, heat the vehicle
body, emblem and name plate using a heat light.
Standard heating temperature
Remove no. 1 Back door emblem assembly
Put protective tape aroun ...