Fuel pump starting procedure

Hi All
We have Freelander 2003/04 which has only one fuel pump under rhr wheel arch
the question is should this pump when igniton switched on run continuously or should it cut out after a few seconds until you turn key to starter motor position and the engine runs

thanks in advance PhillW

Should pump until pressurised then stop, about 4-6 seconds. Starts again when you start the engine.
Mike

Hi all

this pump runs somtimes continually with ignition on, then it will run for a minute and then less but never for just 5 to 6 seconds to prime system. About a week ago we changed the fuel filter we have checked it again to make sure everything is correct. it ran fine for a few days after, so we are presuming this is a new problem, we have checked relay, the ecu is earthing out the relay through terminal D40/10 which is correct.
This car has a fuel pressure sensor in the fuel line, does this have a relationship with the fuel pump ie if the pressure is not reached within the first 5 to 6 seconds of the ignition being switched on the pump continues running till it see the correct pressure or is there a fault with the ecu

hope this makes sense

Regards PhillW