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 doorReplacement
1. REMOVE FRONT WHEEL RH
2. REMOVE ENGINE UNDER COVER NO.1
3. REMOVE FRONT FENDER APRON SEAL RH
4. DRAIN ENGINE OIL
(a) Install a new gasket and the drain plug after draining engine oil.
Torque: 25 NVm (255 kgfVcm, 18 ftVlbf)
5. REMOVE EXHAUST PIPE ASSY FRONT
6. REMOVE ENGINE MOVING CONTROL ...