REAR actuator vs handle cable?

[cn90]

I need some gurus help...

- The Left Rear door cannot be opened, whether from outside or inside.
- When I use the remote, I can hear the noise from the actuator clicking.

I have replaced door actuator in other cars, so I am familiar with this issue, however, I have 2 questions:

1. How do you remove the trim panel with the door closed?
Perhaps removing the rear seat bench may help?

2. Is this a bad actuator vs cable coming off (that connects inner door handle)?