Kenmore electric drier wont heat, worked fine

unplug unit and pull unit out. take back panal off.on the right side you will see the heating colom,at the top you will see thehigh limit switch you nead a continueaty meter to check if unit is bad if ther is no conection between the two conecter's than switch is bad.also at the bottom you will find the heating element and the other high limit switch check them as well. if thay check out good tha you nead to call for service call