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 vehicleData list / active test
Active test
Hint:
Performing the intelligent tester active test allows
relay, vsv, actuator and other items to be operated
without removing any parts. Performing the active
test early in troubleshooting is one way to save time.
The data list can be displayed during the active
test.
...
Diagnostic trouble code chart
If a dtc is displayed during the dtc check, check the circuit
listed for the dtc in the table below (refer to the appropriate
page).
Hint:
When the srs warning light remains on and the normal
system code is output, a decrease in the source voltage is
likely to occur. This malfunction is n ...
Downhill assist control indicator light remains on
Description
When the downhill assist control switch is pushed on, the downhill assist
control function is available and
the downhill assist control indicator light illuminates.
Hint:
Even if the downhill assist control switch is pressed, the downhill assist
control indicator light will blink ...