CHECK BASIC FUNCTIONS
When the back door is partially closed, check that the motor operates to fully close (lock) the back door.
Check that the back door can be opened.
When the back door is partially closed and the motor starts operating, push the back door opener switch assembly. At this time, check that the motor starts reverse operation and then stops.
Immediately after the back door is partially closed (the motor has not started operating yet), push the back door opener switch assembly to open the back door. Check that the motor does not operate.