Thermador No gas at burner

the right rear burner does not ignite the spark works no gas emiited what is the next step

I’m assuming this is the XLO burner. If it’s true then the problem most likely is a bad potentiometer. Thermador had redesigned this part and replaced it with a potentiometer kit which includes simmer control , two new potentiometers and installation instructions.

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?diagram_id=194117&&model_id=232059

Gene.