Yes, it is a secondary muscle (synergist/stabilizer) used in the squat. There is a link below in which you can get a chart of the muscles used in a squat: go down about halfway and you'll see the chart.
The synergist of tensor fascia latae is the gluteus maximus.
synergist
The synergist muscle is a kind of muscle that performs or helps perform the same set of joint motion as the agonists. Synergist muscle acts on movable joints.
Body weight squat, goblet squat, zombie squat, front squat, and back squat
A supinator is a synergist for supinating the hand. Brachialis is the forearm flexor which has no role in supination.
Box Squat is a variation of a squat where you sit on a box and squat back up.
A synergist muscle is a muscle that aids another by promoting the same movement.
agonist
Antagonist
intercostals
Latissimus dorsi is the synergist of the teres major.Specifically, a synergist is a muscle which acts with another. The latissimus dorsi helps adduct and rotate the shoulder to elbow bone called the humerus. The teres major is a shoulder-related muscle.