I see you seem to be trying to read from some file created on a MAC.
For some strange reason Excel on Mac never adopted to the fact that decades ago the MacOS switched to being a flavor of Unix and it defaults to writing text files using Carriage Return instead of Line Feed as the end of line markers.
Try setting the TERMSTR=CR option on the INFILE statement. For the PROC IMPORT define a fileref using a FILENAME statement so you can add the TERMSTR=CR option there also.
If you are the one that created the CSV file from Excel on MAC then make sure to select the right filetype when saving so that it uses the proper end of line characters.