The ignotion module is connected to the coil. The module is what switches primary current from the distributor to the coil itself. The ECM sends voltage pulses to the module, thus allowing it to switch. I'm not sure about the ignitor, but the module can be tested. It has 3 parts and is considered a transistor. There is the Base, Emitter and Collector. The Base would be equal to the ground, the emitter would put out the signal and the collector receives the pulses. You get the picture. I would check to make sure it wasn't grounding out, and then I would check to make sure it was receiving the signal from the ECM and then see if it was sending the signal. (Please, someone, correct me if I'm wrong.) Hope this information helps (and is correct)!
"Succeed- that is the advice which falls drop by drop from the overhanging corruption."