TheaterMan

I own a 95 993 C2 Cab. My vehicles secondary ignition coil is not firing. I ordered and replaced the coil pack thinking this would remedy the problem. It did not. Today I did a continuity test between the output stage of the ignition control module under the drivers seat and the coil pack on both the primary and secondary sides. Both showed good signal. I then checked the input signal to the ignition control module from the motronic unit on a scope. Final stage ignition circuit 1 output from pin 25 on the motronic showed good signal. Final stage ignition circuit 2 output from pin 31 on motronic showed a very weak square signal. As far as I could tell, input to the motronic unit for ignition 1 and 2 triggering is sent from a single Hall sensor mounted by the flywheel. The check engine light has not been lit indicating any stored fault codes. I also manually checked via gas pedal depressed, ignition key turned on counting check engine light flashes still nothing. I feel like it is probably a problem within the motronic itself. But before I start throwing more parts at the problem has anyone out there encountered or solved this issue. Any assistance would be greatly appreciated. Thank You. <img src="confused.gif" border="0">

CalvinC4S

check the belt. they snap often

CalvinC4S

pull the secondary cap off see if you can spin it with your hand