LFS Fuel System Diagram with Fuel Pump Driver Control Module
| Callout | Component Name |
|---|---|
| 1 | Fuel Filter with Water in Fuel Sensor |
| 2 | Fuel Heater |
| 3 | Fuel Temperature Sensor |
| 4 | Fuel Pressure Sensor |
| 5 | Dual Fuel Rail Pressure Sensor (Contains Fuel Rail Pressure Sensor 1 and Fuel Rail Pressure Sensor 2) |
| 6 | Fuel Rail Assembly |
| 7 | Fuel Rail Pressure Regulator 2 |
| 8 | Fuel Pressure Regulator 1 (Located in Fuel Injection Pump) |
| 9 | Fuel Injection Pump |
| 10 | Fuel Injectors |
| 11 | Fuel Tank |
| 12 | Electric 3 - Phase Fuel Pump |
| 13 | Fuel Pump Driver Control Module |
The fuel tank stores the fuel supply and contains a 3 - phase electric fuel pump that is controlled by the fuel pump driver control module and engine control module. Fuel is pumped from the fuel tank through the fuel feed line to the fuel filter assembly. The fuel filter assembly consists of a fuel filter/water separator, fuel heater, fuel temperature sensor, and a water in fuel sensor. Fuel flows out of the fuel filter assembly through the rear fuel feed pipe to the fuel pressure sensor and fuel injection pump. The belt driven fuel injection pump is mounted on the upper right corner of the engine block. High pressure fuel is supplied through the high pressure fuel line to the fuel rail and then through the fuel injector lines to the fuel injectors. High pressure fuel is controlled by the ECM, fuel pressure regulator 1 and fuel pressure regulator 2. Excess fuel returns to the fuel tank through the fuel return pipes.