The New York jury has ordered him to pay her a total of $83.3m in damages.
A previous jury already found Mr Trump liable for sexually abusing Ms Carroll in a department store dressing room in early 1996 and for subsequently defaming her.
Moments after Ms Carroll’s lawyer began presenting her closing argument on Friday 26 January, Mr Trump stood up and walked out of the courtroom — with the judge noting it for the record.
He returned for the defence summation.
The trial has also seen tense exchanges between the former president’s lawyer, Alina Habba, and Judge Lewis Kaplan including a warning that she was “on the verge of spending some time in the lockup” on Friday.