Hi James, Google "Bently's auto manuals" and you will find where to get one.
The manual walks you through the fuel system starting at the fuel rail to check for pressure, then the fuse, the relay (how to test and jump the relay but a PITA to get at), and finally the fuel pump voltage etc. Also could be the fuel filter or pressure regulator. The most difficult job is changing out the pump, but relativly easy compared to many cars where you have to drop the fuel tank. The access is from under the rear seat. Good luck.