Idling 931 stopped running, now won't start
 

Hi there

My 931 was running at idle and then it stopped running. Now it turns over but doesn't start.

Fuel pumps are delivering fuel at the right rate however it won't kick over.
In doing the ignition troubleshooting in the haynes manual the coil test is fine however when testing the ignition control unit terminals 15 & 31 voltage test fig 5.11b page 133 for you manual owners it does not register any voltage reading at all... nada... zippo... (it supposed to be the same voltage at the battery which is 13.1v)
The manual says to trace back to ignition switch but all seems fine.

Anyone have any ideas?

Thanks

pcPerc