Fuel Pump Module
Fuel Pump Module - All Except North American Specification Vehicles
| ITEM | DESCRIPTION |
|---|---|
| 1 | Fuel vapor pipe connection - To the evaporative emissions canister (non China (CN6) vehicles only) |
| 2 | Fuel line connection - Delivery |
| 3 | Fuel level sensor wiring harness connector |
| 4 | Low Pressure (LP) fuel pump wiring harness connector |
| 5 | Fuel line connection - Fuel Fired Booster Heater (FFBH) (if equipped) |
| 6 | Fuel inlet filter |
| 7 | FFBH suction pipe and seal (if equipped) |
| 8 | Fuel level sensor A - Float |
| 9 | Swirl pot |
| 10 | Fuel level sensor A |
| 11 | Jet pump connection - Left (passive side of fuel tank) |
| 12 | Locking ring and O-ring seal |
Fuel Pump Module - North American Specification Vehicles Only
| ITEM | DESCRIPTION |
|---|---|
| 1 | Fuel line connection - Delivery |
| 2 | Fuel level sensor wiring harness connector |
| 3 | Low Pressure (LP) fuel pump wiring harness connector |
| 4 | Swirl pot |
| 5 | Fuel level sensor A - Float |
| 6 | Fuel level sensor A |
| 7 | Jet pump connection - Left (passive side of fuel tank) |
| 8 | Locking ring and O-ring seal |
The fuel pump module is located in the right side of the fuel tank. The fuel pump module flange is sealed to the fuel tank with an O-ring and secured with a locking ring.
The top flange of the fuel pump module assembly provides the internal and external interface for the tank electrical and fuel connections. The flange is formed with fuel level and Low Pressure (LP) fuel pump wiring harness connectors. The connectors on the fuel pump module are for the fuel level sensors A and B, and the LP fuel pump.
The lower part of the fuel pump module forms the fuel swirl pot, and provides the location for the LP fuel pump and the 2 jet pumps. The swirl pot provides a constant reservoir of fuel to deliver fuel to the engine.
The LP fuel pump makes sure that sufficient fuel is in the swirl pot to deliver the engine's High Pressure (HP) fuel pumps demands. The LP fuel pump supplies the fuel to power the jet pump venturi's. The rapid flow of fuel through the venturi nozzle creates a depression. This depression draws fuel back across the saddle from the left (passive) side of the fuel tank into the pump (active) side of the fuel tank. The second venturi draws fuel from the pump side of the fuel tank into the swirl pot. Surplus fuel entering the fuel swirl pot overflows into the usable right side of the fuel tank.
Fuel Fired Booster Heater (If Equipped)
For cold climate market vehicles that are equipped with a Fuel Fired Booster Heater (FFBH) and an FFBH fuel pump.
The fuel pump module has a separate pipe connection for a FFBH fuel line that connects to a FFBH fuel pump mounted on the exterior right side of the fuel tank. The FFBH fuel line connection is installed with a sealed suction pipe which draws fuel from the swirl pot. An additional fuel line connects the FFBH fuel pump to the FFBH fuel inlet.
For additional information, Refer to: FUEL FIRED BOOSTER HEATER