The English left-back played 58 minutes as the Galaxy drew 0-0 with Mexican side Club Tijuana in a pre-season friendly at Stub Hub Center.
Former Arsenal and Chelsea star Cole, who joined the Galaxy from Italian club AS Roma in late January, put in a strong showing in his first outing for Bruce Arena's side and received a loud applause from the Carson faithful.
He later posted on Twitter his appreciation at making his Galaxy bow.
Great to play my first game for the @LAGalaxy thanks to fans for. My welcome https://t.co/vI0Z0MCzoi
— Ashley Cole (@TheRealAC3) February 10, 2016