I'm still trying to fix my car after a month now. I'm not getting any fuel pressure. The pump is not coming on at all. I've tried everything except the fuel pump which is the most expensive part. Does anyone know how this fuel system works? I know the basics but I don't know why there is no voltage to the pump. There aren't any codes stored. I've changed the CCRM and the fuel pump driver and the pressure sensor on the fuel rail. I've also checked all the wiring from the ECU to the fuel pump driver to the fuel pump. There is voltage getting to the driver. Any help would be greatly appreciated