(corsa) engine spark problems.....PLEASE

[j_robi]

Apologies for starters!

But recently bought a 1.2 2003 corsa 16V CODE X12XE. It needed an engine swap.
So got a 1.2 16v x12xe engine (a couple of years older- but same engine)

Have swapped over from the old engine the crank and camshaft sensors.

All in now, BUT -
No spark
No switching signals on the coil pack
Pin 1 at the coil pack is the earth, pin 2 is battery voltage- both of these are reading correctly

Pins 3,4 and 5 are the switching signals- but no signals are switching


Any help appreciated, please help asap