Thinking that myself, I will have a look at the injectors and see if they are getting any control firing signals, that's why I was query if ECU on these motors contained the alarm immobiliser circuitry which if had a issue would prevent a start.

I have a friend who has a TD5 which has covered 80000miles and has a issue with this TD5 in that it fails to start. To date a number of things have been tried , but I will give a brief history of what happened just before it starting failing to start. Motor ran fine then one day while running...