Here are the components that can keep the igniter from coming on:
If any one of the above components is open the dryer igniter will not come on. A volt/ohm meter will be needed to test these components. If you have no Ohm meter or do not know how to test these components, you may need a hands on tech on location.
Yes I do have and know how to use a V.O.M...Should any of these components have a specific Ohm reading?
Could this be the 3 terminal coil on the gas valve?