I have a Fiat Ulysse 2.0 EL (1999). I have the exact same problem as the above, and after 42 days at 5 different autoelectrician's / garages, it still won't start. Latest glimmer of hope, we put in a used ECU, the car started, only to not start again the second time. We suspect dead short causing the ECU to blow. Justed started suddenly, when car stalled three times in quick succession one morning, then no longer starting. Fuel pump relay was replaced (made a clicky sound when turning engine over). RPM sensor fitted, made no difference. Coil pack checked, not faulty. What now? Did anyone solve their same problems as this. it is the same vehicle as a Peugeot 806, also a Citroen Synergy and Seat.

Just to add to what has already been said, DO NOT PLACE A 12 VOLT SUPPLY TO AN INJECTOR/S ON ANY COMMON RAIL DIESEL. They are operated by the ECU by capacitor discharge and to feed them battery voltage WILL damage them. Also the pressure at the injectors can be as high as 30,000psi (1800bar), SO NEVER LOOSEN AN INJECTOR PIPE AS SERIOUS INJURY CAN OCCUR..

The engine will not start unless the fuel rail pressure reaches 10,000kpa, (1000bar) but remember, pumps do not create pressure. Pumps enhance flow, it is opposition to flow that creates pressure. If you are not achieving 10,000kpa it could be that the high pressure fuel pump is retuning fuel directly to the tank via the pressure regulator which might be stuck open. Or the in-tank pump might not be working. The fuel pressure sensor in the common rail could be faulty, or so could the fuel pump be.

Click on the link below for a full library of EOBD fault codes.

http://www.ecutesting.com/fault_code_library.html