Slide the door handle toward the rear of the vehicle and pull it out.
Toyota hiace door handle removal.
Detach the rubber access plug on the edge of the door and loosen the bolt behind the plug using a torx wrench.
You should not need to completely remove it.
Open the sliding doors then use the inline socket to remove the bolt in front of the track s cover.
As i recall there are several friction type fasteners around the perimiter of the panel that can be removed by prying carefully away from the metal portion of the door to free up the trim panel.
This bolt holds the lock cylinder and handle in place.
There are screws at the door handle at the forward portion with covers when the door is open and the back edge small covers.