My v50 won't start. The fuel pump in the tank isn't running. I have checked the fuel system fuse, and there is a voltage reading of 4.96v at the fuel pump. I also have continuity through the pump. I have been told that there is a module that controls the pump. Where do I find that? Is it possible that the pump operates on less than 12v? The engine is the PSA one. Thanks in advance. Alan.