How can ypu tell if ac compressor is runnung and clutch is engaged?

To determine if the AC compressor is running and the clutch is engaged, listen for a clicking sound when the AC is turned on; this indicates the clutch is engaging. Additionally, observe the center of the AC compressor pulley; if the inner part spins while the outer part remains stationary, the clutch is engaged. You can also feel the refrigerant lines; if they are cold, the compressor is likely operating. If you notice no changes in temperature or airflow, the compressor may not be functioning properly.