I have a mark 4 fiesta with no spark !
The ecu has been tested new coil pack and crank sensor
I have been digging around looking for other causes ! in the main fuse box under the bonnet i found 2 relays missing with bits of wire in them bridging across ! lol some how i dont think ford used this method
its the green relay top left and then there is a row of orange ones and the end right
do eitheir of these have anything to do with the ignition ? maybe imobilser ? or something spart related ? I cant think of anything else that may be causing it !
Cheers Daniel

 

Do you not have a a handbook, as that lists them, if not buy a haynes manual as that will hopefully list them, or find someone with a mark4 who will let you have a look at the handbook and photocopy the relay positions if listed.
It defo isn't right, if one is the pcm(as I think ford called it at the time) relay this would stop power to the ecu and hence coil/spark, it would also stop fuelling.
tabetha

 

ive got what you need in pdf but cant attach it on here send me your email and i will send it to you