Fuel pump : Help, I can’t find it!

Hello Volvo municipality, vehicle: Volvo V70 (III) 2,0d (136hp, Ford PSA), built in 2010, 270Tkm Problem: engine went off while driving, error code P008700 suction tube pressure/fuel pressure too low. Twice he left to start and even drive, but now no engine start is possible. Starter turns quite normal. Error code comes back. Question: I wanted to expand the fuel pump today. I dismantled the tank because there is no maintenance flap. According to Skandix and according to Vida the pump is like most cars in the pump sump. Unfortunately not with this V70 – here the pump sump consists only of sieve, suction tube and the level sensor. According to this only a 2 adrig cable goes into the interior of the tank/pump sump. The plug has several pins, but these are not proven in the counterpart. Question: how does the diesel come from the tank to the injection pump? Or is the injection pump/high pressure pump also responsible for the suction of the fuel. Is there a 20A fuse for the fuel pump? Never thought I would have to ask such a stupid question. Thank you for your answers.