Yes, it is. The PT is getting a 5v pulsing signal, so the ecu is seeing the dizzy crank position sensor signal.

1. Hook 12v+ straight from the battery to the coil + wire via a straight pin stuck thru the wire and see if you get spark. This will eliminate the coil connector as a cause.

2. Test the output at the other end of the coil + wire. This is in a strange place on my 89fsm, look for an 8 pole connector on the pside fenderwell, coil+ power is a 2BW wire in position 2, and the tach signal wire is a .85 WB/L wire in position 6. With the catch at the top, number 1-4 is on the top, and 5-8 on the bottom.

3. The coil power comes from the 3BW at the ignition switch, which should have 12v+ in both start and run. Power in to the ign sw is a 3W wire. Check it for 12v+, too.

I think we are getting close now...