There isn't a dedicated "cruise control relay" in the traditional sense on a 2001 Chrysler Sebring. The cruise control system's functionality is managed by various components within the car's computer system (Powertrain Control Module or PCM) and related wiring. There's no single relay that controls the whole system.
Troubleshooting cruise control issues on a 2001 Sebring usually involves checking fuses, the switch stalk, wiring harnesses for breaks or damage, and ultimately, the PCM itself for faults. A professional scan tool capable of reading trouble codes from the PCM is the best way to diagnose problems.