Thermador Oven will not heat

My range will not heat above 200 degrees. The bake element tests out fine. I tried replacing the control panel. Now it looks like it might be the thermal sensor in the oven. However, I can not seem to trace the leads on the sensor back to the control module if that is where they go. Does anyone know how to test the sensor and if so how you replace it? It seems like I have to rip the whole unit apart to get to it. The part listed on this site shows it connected to two long white wires that need to be butt spliced in somewhere. But where?
Thanks
Andrew