If turning it on does absolutely nothing, there is definitely a Speed Control fuse in the IPDM upunder the driver side of the engine compartment.
If the fuse is good, it could be your clockspring that is acting up.
Mine will turn on for a few seconds, and then shuts off and can never be turned back on until I turn the key out a back on. I'm pretty sure it is wiring related and I have not gathered the courage to start the potentially tedious process of troubleshooting the wiring.