the other day my trailing coils quit for no known reason. Car has ran fine for about a year on E6x on my turbo II fc. I switched out the trailing coils with a known good set off a running NA. Still nothing with the coils. I then measured the voltage on the connectors. The coils are getting 12v from the black/yellow wires. and 12v from both ignition drivers. When I crank the car one of the ignition wires drops the voltage rapidly (which I assume means it is working) and the other ignition wires voltage stays at around 12v.

Any suggestions on what to check. It seems as if one of the ignition wires is not working but unsure as to why or how to fix it.

 

am I right in assuming that the coil ingition drivers should be changing voltage rapidly?

 

Okay this is fixed. Mods can delete this. It was a dumb software issue.