OK, coil gets feed from ignition on the centre pin, and the ECU grounds the outside pins to fire the coil.
How I check this is with a 'noid' light (basically a low wattage bulb) you could check it with a multi meter or an LED!
One probe in the centre then the other in each of the outer pins in turn (coil disconnected) crank it over you should get a switching voltage on each. Hope I've explained it well enough?
If it doesn't it's either the coil drivers in the ECU are foooked or a wiring fault.
Sometimes a failed coil pack can spike the ECU.
It's not that common, I've probably done 2 or 3 over the years, last one on a Puma about 5 years ago.
Last edited by GVK.; Jul 30, 2013 at 06:26 PM.