SPECIFICATIONS
| Item | Liters |
|---|---|
| Fuel tank capacity | 86.3 (total) |
CAPACITY
| Item | Specifications |
|---|---|
| Fuel system | Electronic - returnless |
| Fuel tank | Multi layer plastic |
| Fuel tank sender units | Two - Front and Rear - front sender unit is attached to the frame of the fuel pick up tube and the rear sender unit is attached to the fuel pump swirl pot |
| Fuel filter | Located in the fuel tank - if the fuel filter becomes blocked a new pump and sender unit must be installed |
| Fuel pump | Dual stage electric - submersible - located in fuel tank |
| System pressure | 4.5 bar - 65.3 lbf/in2 |
| Starting pressure | 6.3 bar - 91.4 lbf/in2 |
GENERAL SPECIFICATIONS
| Item | Nm |
|---|---|
| Fuel tank filler pipe retaining bolt | 4 |
| Fuel tank heat shield retaining bolts | 6 |
| Fuel tank heat shield retaining nuts | 3 |
| Fuel tank retaining bolts | 45 |
TORQUE SPECIFICATIONS
| Item Number | Description |
|---|---|
| 1 | Front Roll Over Valve (ROV) |
| 2 | Pipe - fuel vapor from charcoal canister to purge valve |
| 3 | Pipe - vent from front ROV |
| 4 | Pipe - fuel supply to engine mounted fuel pumps |
| 5 | Fuel delivery module |
| 6 | Rear ROV |
| 7 | Liquid Vapor Separator (LVS) |
| 8 | Fuel filler cap |
| 9 | Charcoal canister breather pipe |
| 10 | Fuel Pump Delivery Module (FPDM) |
| 11 | Charcoal canister |
| 12 | Pipe - rear differential breather (Reference only) |
| 13 | Filler pipe |
| 14 | Heat shield |
| 15 | Cover |
| 16 | Pipe - connection to purge valve |
| 17 | Pipe - fuel supply |
| Item Number | Description |
|---|---|
| 1 | Front Roll Over Valve (ROV) |
| 2 | Pipe - fuel vapor from charcoal canister to purge valve |
| 3 | Pipe - vent from front ROV |
| 4 | Pipe - fuel supply to engine mounted fuel pumps |
| 5 | Fuel delivery module |
| 6 | Rear ROV |
| 7 | Liquid Vapor Separator (LVS) |
| 8 | Fuel filler cap |
| 9 | Charcoal canister breather pipe |
| 10 | Fuel Pump Delivery Module (FPDM) |
| 11 | Diagnostic Monitoring Tank Leakage (DMTL) pump |
| 12 | Charcoal canister |
| 13 | Pipe - rear differential breather (Reference only) |
| 14 | Filler pipe |
| 15 | Heat shield |
| 16 | Cover |
| 17 | Pipe - connection to purge valve |
| 18 | Pipe - fuel supply |
GENERAL
The major components of the 5.0L V8 fuel system comprises a fuel tank, a fuel delivery module, a fuel filler assembly and two fuel level sensors.
The 5.0L V8 fuel system uses a return less fuel system which comprises a fuel pump mounted in the fuel tank to deliver fuel at a constant flow and pressure to the fuel rails which supply fuel to all fuel injectors.
The fuel pump operation is regulated by a Fuel Pump Driver Module (FPDM) which is controlled by the engine management system. The driver module regulates the flow and pressure supplied by controlling the operation of the fuel pump using a Pulse Width Modulation (PWM) output.
The fuel rails and the injectors are described in Fuel Charging and Controls - 5.0L V8.
Fuel system emission control is described in ENGINE EMISSION CONTROL (V8 5.0L PETROL) .
The fuel tank is located on the right hand side of the vehicle, between the transmission and the right hand chassis longitudinal. The tank is located on a mounting cradle which secures the whole fuel tank assembly to the vehicle. The tank is blow molded from High Density PolyEthylene (HDPE) and has a usable capacity of 88.0 liters (19.4 gallons).
The cradle is attached to the chassis with six bolts. When the cradle is attached to the chassis, the tank is positively secured via foam pads which bear against the central chassis cross beam. A protective cover is fitted to the front right hand corner of the tank and provides additional protection.
The fuel tank is manufactured from molded plastic which is a minimum of 3 mm thick. The tank is a sealed unit with the only internal access being via the pump module flange aperture on the top of the tank.
The flange is fitted with a locking ring and seal. The seal locates in a groove on the tank. The locking ring locates and clamps on the encapsulated ring that is molded into the fuel tank. The flange has a tag which locates in the top of the tank to ensure correct orientation.
The flange has a six pin internal and external connectors which provide for electrical connections for the level sensors and the fuel pump. A quick release connector provides for the connection of the fuel supply pipe.
A carrier within the tank provides for the mounting of the fuel suction port, vent valve, the level sensors and a passive drain.
The fuel delivery module is mounted on a bayonet lock ring which is welded inside the fuel tank. The fuel delivery module comprises the fuel pump, a jet pump, the pump inlet filter and the fuel pressure relief valve. The rear fuel level sensor is also mounted on the side of the pump module body.
Only the pump module assembly and the fuel level sensors are available as serviceable components, the individual assembly components are not available separately.
FUEL DELIVERY MODULE
| Item Number | Description |
|---|---|
| 1 | Fuel supply outlet connection |
| 2 | Vent pipe connection |
| 3 | Electrical connector |
| 4 | Locking ring |
| 5 | Pressure relief valve |
| 6 | Suction pipe connection |
| 7 | Fuel pick-up filter |
| 8 | Fuel pump |
| 9 | Fuel filter |
The fuel delivery module is a new design for 5.0L V8 2010MY vehicles. The module is located inside the fuel tank and comprises three main components; a fuel pump, a remote fuel pick-up and a top flange assembly.
FUEL PUMP
The fuel pump is a variable-speed rotary-vane type, which operates in a fuel pump module located at the rear of the fuel tank. A venturi transfer pump is also located in the rear of the tank. The fuel pump module is secured in the fuel tank with a bayonet style locking ring that is welded into the tank structure. The fuel pump module has an integral top plate for the external pipe work and electrical connectors.
The fuel pump delivers fuel at a maximum pressure of 630 kPa (6.3 bar; 91.4 lbf/in. 2 ) to the filter bowl in the top flange.
The electric pump is located in a plastic swirl pot which collects fuel from the base of the fuel tank via a filter. The swirl pot acts as a fuel reserve, providing a constant supply of fuel to the fuel pump irrespective of fuel quantity or vehicle attitude. When the vehicle is level the swirl pot contains approximately 400 cm3 (24.4 in3) of fuel when the engine is running. The jet pump ensures that fuel is constantly supplied to the swirl pot to provide a sufficient fuel supply for the pump. A one way valve is located in the base of the swirl pot. The valve allows fuel from the tank to enter the swirl pot, but prevents it from escaping.
The fuel pump is a serviceable component and access to the pump is by removal of the top flange.
REMOTE FUEL PICK-UP AND LEVEL SENSOR ASSEMBLY
The fuel system incorporates twin jet pumps which are integral with the fuel pump module. One jet pump collects fuel from the rear of the tank, and the other draws additional fuel from the front of the tank through a suction line that is mounted on the carrier. The jet pump operates on a venturi effect created by the fuel at pump output pressure passing through the jet pump.
The prime function of the jet pump is to collect fuel from the front of the tank and transfer it into the fuel pump module swirl pot at the rear of the tank. The jet pump feature ensures that fuel is drained from the front of the tank before fuel run-out at the rear of the tank.
The fuel level sensors for the front and rear of the fuel tank are attached to the carrier frame. The fuel pick-up and the level sensors are serviceable components and access is by removal of the flange cover on the top rear of the fuel tank.
TOP FLANGE ASSEMBLY
The top flange is located on the top of the fuel tank. The flange assembly is sealed in the tank with a with a sealing ring. A locking ring secures the flange assembly in the tank and requires a special tool for removal.
The outer surface of the flange has 1 outlet with a quick-fit connection. The connection is for the fuel supply pressure outlet to the engine mounted fuel pumps. An electrical connector is located adjacent to the pipe connections and provides the electrical interface to the fuel pump and the level sensors.
On the underside of the flange, inside the tank, is a molded housing which contains the non-serviceable fuel filter. Fuel from the fuel pump enters the base of the housing and passes through the filter before exiting the tank to the engine mounted fuel pumps. An electrical connection on the base of the filter housing provides a ground for the filter.
FUEL PUMP DRIVER MODULE (FPDM)
| Item Number | Description |
|---|---|
| 1 | Fuel Pump Driver Module (FPDM) |
| 2 | Mounting bracket |
The FPDM is located in the LH side of the luggage compartment, above the LH wheel arch, behind the trim panel. The FPDM is located on a bracket and secured with 2 bolts and nuts.
The fuel pump operation is regulated by the FPDM which is controlled by the Engine Control Module (ECM). The FPDM regulates the flow and pressure supplied by controlling the operation of the fuel pump using a PWM output.
The FPDM is powered by a supply from the fuel pump relay in the Engine Junction Box (EJB). The fuel pump relay is energized on opening the driver's door or when power mode 9 engine crank is initiated using the stop/start button. The FPDM supplies power to the fuel pump, and adjusts the power to control the speed of the fuel pump and thus the pressure and flow in the fuel delivery line.
A Pulse Width Modulation (PWM) signal from the ECM tells the FPDM the required speed for the fuel pump. The on time of the PWM signal represents half the fuel pump speed, e.g. if the PWM signal has an on time of 50%, the FPDM drives the pump at 100%.
The FPDM will only energize the fuel pump if it receives a valid PWM signal, with an on time of between 4% and 50%. To switch the fuel pump off, the ECM transmits a PWM signal with an on time of 75%.
The output pressure from the fuel pump will change with changes of engine demand and fuel temperature. The ECM monitors the input from the Low Pressure (LP) fuel sensor and the fuel rail pressure sensor and adjusts the speed of the fuel pump as necessary to maintain a nominal output pressure of 450 kPa (4.5 bar; 65.3 lbf/in. 2 ), except during engine start-up. At engine start-up the target pressure for the fuel delivery line is 630 kPa (6.3 bar; 91.4 lbf/in. 2 ).
If the Supplemental Restraint System (SRS) outputs a crash signal on the high speed Controller Area Network (CAN) bus, the ECM de-energizes the fuel pump relay to prevent any further fuel being pumped to the engine.
If the ECM does not detect pressure in the fuel delivery line, it stops, or refuses to start the engine and stores the appropriate Diagnostic Trouble Code (DTC).
The ECM receives a monitoring signal from the FPDM. Any DTC's produced by the FPDM are stored by the ECM.
DTC's can be retrieved from the ECM using an approved Land Rover diagnostic system. The FPDM itself cannot be interrogated by the approved Land Rover diagnostic system.
FUEL LEVEL SENSORS
Two fuel level sensors are used in the fuel tank to measure the amount of remaining fuel in the front and rear of the fuel tank. Both level sensors are attached to the internal carrier. The sensors are connected to the vehicle wiring harness via a connector on the outer face of the top flange assembly.
The sensors are a MAgnetic Passive Position Sensor (MAPPS) which provides a variable resistance to ground for the output from the fuel gauge. The sensor is sealed from the fuel preventing contamination of the contacts and increasing reliability. The front and rear fuel level sensors are connected to the external electrical connector on the flange via the connectors on the underside of the fuel pump module flange.
The sensor comprises a series of 51 film resistors mounted in an arc on a ceramic surface. The resistors are wired in series with individual contacts. A soft magnetic foil with 51 flexible contacts is mounted a small distance above the film resistors. A magnet, located below the ceramic surface, is attached to the sender unit float arm. As the float arm moves, the magnet follows the same arc as the film resistors. The magnet pulls the flexible contacts onto the opposite film resistor contacts forming an electrical circuit.
SENSOR OPERATING PRINCIPLE
| Item Number | Description |
|---|---|
| 1 | Magnetic foil |
| 2 | Spacer |
| 3 | Ceramic surface |
| 4 | Magnet |
| 5 | Resistance film |
The film resistors are arranged in a linear arc with resistance ranging from 51.2 to 992.11 Ohms. The electrical output signal output is proportional to the amount of fuel in each side of the tank and the position of the float arms. The measured resistance is processed by the instrument cluster to implement an anti-slosh function. This monitors the signal and updates the fuel gauge pointer position at regular intervals, preventing constant pointer movement caused by fuel movement in the tank due to cornering or braking.
A warning indicator is incorporated in the instrument cluster and illuminates when the fuel level is at or below 1/8th of tank capacity.
The fuel level sender signals are converted into a CAN bus message by the instrument cluster as a direct interpretation of the fuel tank contents in liters. The ECM uses the CAN bus message to store additional On-Board Diagnostic (OBD) P Codes for misfire detection when the fuel level is below a predetermined capacity.
FUEL FILLER PIPE AND TANK BREATHER ASSEMBLY
| Item Number | Description |
|---|---|
| 1 | Liquid Vapor Separator (LVS) |
| 2 | Pipe - fuel vapor vent |
| 3 | Filler cap lanyard |
| 4 | Filler cap |
| 5 | Bracket |
| 6 | Charcoal canister breather/dust filter |
| 7 | Pipe - breather |
| 8 | Pipe - fuel vapor vent |
| 9 | Pipe - fuel vapor to charcoal canister |
| 10 | Charcoal canister |
| 11 | Pipe - rear differential breather (Reference only) |
| 12 | Pipe - fuel vapor connection |
| 13 | Hose - fuel filler pipe to fuel tank spit back flap |
| 14 | Pipe - fuel filler |
| Item Number | Description |
|---|---|
| 1 | Liquid Vapor Separator (LVS) |
| 2 | Pipe - fuel vapor vent |
| 3 | Filler cap lanyard |
| 4 | Filler cap |
| 5 | Bracket |
| 6 | Charcoal canister breather/dust filter |
| 7 | Pipe - breather |
| 8 | Pipe - fuel vapor vent |
| 9 | Pipe - fuel vapor to charcoal canister |
| 10 | Charcoal canister |
| 11 | Pipe - rear differential breather (Reference only) |
| 12 | Pipe - fuel vapor connection |
| 13 | Hose - fuel filler pipe to fuel tank spit back flap |
| 14 | Pipe - fuel filler |
| 15 | Pipe - fuel vapor to purge valve |
| 16 | Diagnostic Tank Monitoring Leakage (DMTL) |
The fuel filler head is positioned at the rear of the vehicle, above the right hand rear wheel. The filler head and cap is covered by a molded plastic cover which is electrically locked when the vehicle is locked.
The filler cap is a conventional screw in type which is secured to the vehicle with a lanyard. The filler cap must be securely fitted to ensure that the tank venting system is sealed. The cap has a locking mechanism which gives an audible click when the cap is correctly tightened.
Failure to correctly secure the filler cap will result in vapor being lost from the system. On NAS Vehicles, if the cap is incorrectly secured when the engine management system operates the Diagnostic Monitoring Tank Leakage (DMTL) system, the loss of vapor will be detected as a leak and the MIL lamp will be illuminated.
The filler head is a stainless steel fabrication. A bracket provides for the attachment of the filler head to the vehicle body.
A connection on the rear of the filler head allows for the connection of the fuel tank breather pipe from the vapor separator on ROW vehicles and from the roll over valves on NAS vehicles.
The fuel filler pipe locates in the tank and incorporates a spitback flap in the tank end of the pipe. The flap is a spring loaded cover which acts as a 1-way valve, allowing the tank to be filled but preventing fuel leaving the tank into the filler pipe.
All vehicles have a charcoal canister breather pipe which is connected from the charcoal canister and is routed alongside the fuel filler pipe to the filler head. The filler head end of this pipe is connected differently depending on market as follows
- On ROW vehicles the breather pipe is fitted with a mesh and allows fresh air to be drawn into the charcoal canister when fuel vapor is being purged from the system.
- On NAS vehicles the breather pipe is connected to the DMTL pump. Fresh air is drawn into the pipe via a DMTL filter integral with the pump when fuel vapor is being purged from the system. When the DMTL system is active, the breather pipe is closed by the pump, sealing the system and allowing the system to be pressure checked for leakage.
For information on the charcoal canister and purging system refer to evaporative emissions. Refer to EVAPORATIVE EMISSIONS .
A second pipe is routed alongside the charcoal canister breather pipe. On ROW vehicles, this pipe is the fuel tank breather pipe from the vapor separator and is connected into the fuel filler pipe near to the filler head. On NAS vehicles, this pipe is smaller in diameter and also serves as the fuel tank breather pipe. The pipe is not connected to the vapor separator but allows fuel vapor from the right hand roll over valve to vent into the connection with the fuel filler pipe near to the filler head.
A pipe is routed across the top of the tank in front of the vapor separator. This pipe connects the charcoal canister to the purge valve located in the engine compartment.
FUEL LOW PRESSURE (LP) SENSOR
The fuel LP sensor supplies a pressure signal to the Engine Control Module (ECM) to enable closed loop control of the fuel pump. The fuel LP sensor is installed in a manifold in the fuel supply line. The manifold is located in the rear of the front Right Hand (RH) wheelarch, behind the splash shield.
OPERATION
The fuel pump is a variable-speed rotary-vane type, which operates in a fuel delivery module located in the fuel tank. The fuel delivery module is secured in the fuel tank with a bayonet style locking ring that is welded into the tank structure. The fuel pump module has an integral top plate for the external pipe work and electrical connectors.
Fuel level is biased towards the rear of the fuel tank by drawing fuel from the front of the tank via the jet pump, which serves to deliver a constant supply of fuel to the swirl pot. High pressure fuel from the fuel pump is directed through the jet pump's orifice, creating a low pressure area to be formed in the cross over pipe. The fuel is drawn into this low pressure area in the cross over pipe and directed into the swirl pot delivery pipe.
Fuel is pumped from the fuel pump to the to the two engine mounted HP fuel pumps via the integral filter and pressure relief valve.
The pressure relief valve assists engine starting by retaining a pre-set fuel pressure in the supply pipe and fuel rail. The pressure relief valve also limits fuel rail pressure due to temporary vapor increase in hot conditions and pressure caused by sudden load changes, for example, a fully open to closed throttle transition.
To meet emission requirements, the fuel tank and associated components are designed to minimize fuel vapor loss during refueling. This is achieved by preventing fuel vapor from the fuel tank venting directly to the atmosphere. Instead fuel vapor is directed into the charcoal canister where it is stored before being purged at intervals to the engine's intake manifold.
North American Specification (NAS) vehicles feature additional connections and pipes at the rear of the filler head and also incorporates a Diagnostic Monitoring Tank Leakage (DMTL) pump for leak detection requirements.
| Item Number | Description |
|---|---|
| 1 | Fuel line connection |
| 2 | Fuel injector (8 off) |
| 3 | Left Hand (LH) fuel rail |
| 4 | High pressure (HP) fuel line connection |
| 5 | Right Hand (RH) fuel rail |
| 6 | Fuel rail pressure sensor |
| 7 | HP fuel pumps |
| 8 | Fuel Low Pressure (LP) sensor Jet pump |
| 9 | Jet pump |
| 10 | Fuel filter |
| 11 | Pressure relief valve |
| 12 | Fuel delivery module assembly |
| 13 | Fuel level sensor - Rear |
| 14 | Fuel level sensor - Front |
PRINCIPLE OF OPERATION
For a detailed description of the fuel tank and lines system and operation, refer to the relevant Description and Operation workshop information. Refer to Fuel Tank and Lines.
Refer to: FUEL TANK AND LINES
INSPECTION AND VERIFICATION
| CAUTION | Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault and may also cause additional faults in the vehicle being checked and/or the donor vehicle. |
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION Mechanical Electrical Fuel level Fuel leaks Damaged fuel lines Damaged push connect fittings Fuel contamination/grade/quality Throttle body Damaged fuel tank filler pipe cap Damaged fuel tank filler pipe Fuses Loose or corroded electrical connectors Harnesses Sensor(s) Engine Control Module (ECM)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
SYMPTOM CHART
| Symptom | Possible Causes | Action |
|---|---|---|
| Engine cranks, but does not fire | Engine breather system disconnected/restricted Ignition system Fuel system Electronic engine control | Ensure the engine breather system is free from restriction and is correctly installed Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Engine cranks and fires, but will not start | Evaporative emissions purge valve Fuel pump Spark plugs HT short to ground (tracking) check rubber boots for cracks/damage Ignition system | Check for evaporative emissions, fuel system and ignition system related DTCs and refer to the relevant DTC Index |
| Difficult cold start | Engine coolant level/anti-freeze content Battery Electronic engine controls Exhaust Gas Recirculation (EGR) valve stuck open Fuel pump Purge valve | Check the engine coolant level and condition Ensure the battery is in a fully charged and serviceable condition Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Difficult hot start | Injector leak Electronic engine control Purge valve Fuel pump Ignition system EGR valve stuck open | Check for injector leak, install new injector as required Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Difficult to start after hot soak (vehicle standing, engine off, after engine has reached operating temperature) | Injector leak Electronic engine control Purge valve Fuel pump Ignition system EGR valve stuck open | Check for injector leak, install new injector as required Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Engine stalls soon after start | Breather system disconnected/restricted ECM relay Electronic engine control Ignition system Air intake system restricted Air leakage Fuel lines | Ensure the engine breather system is free from restriction and is correctly installed Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index Check for blockage in air filter and air intake system Check for air leakage in air intake system |
| Engine hesitates/poor acceleration | Fuel pressure, fuel pump, fuel lines Injector leak Air leakage Electronic engine control Throttle motor Restricted accelerator pedal travel (carpet, etc) Ignition system EGR valve stuck open Transmission malfunction | Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index Check for injector leak, install new injector as required Check for air leakage in air intake system Ensure accelerator pedal is free from restriction Using the manufacturer approved diagnostic system, check the Transmission Control Module (TCM) for related DTCs and refer to the relevant DTC index |
| Engine backfires | Fuel pump/lines Air leakage Electronic engine controls Ignition system Sticking variable camshaft timing (VCT) hub | Check for fuel system failures Check for air leakage in intake air system Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Engine surges | Fuel pump/lines Electronic engine controls Throttle motor Ignition system | Check for fuel system failures Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Engine detonates/knocks | Fuel pump/lines Air leakage Electronic engine controls Sticking VCT hub | Check for fuel system failures Check for air leakage in intake air system Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| No throttle response | Electronic engine controls Throttle motor | Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM) for related DTCs and refer to the relevant DTC index |
| Poor throttle response | Breather system disconnected/restricted Electronic engine controls Transmission malfunction Traction control event Air leakage | Ensure the engine breather system is free from restriction and is correctly installed Using the manufacturer approved diagnostic system, check the Engine Control Module (ECM), Transmission Control Module (TCM), and Anti-lock Brake System control module (ABS) for related DTCs and refer to the relevant DTC index Check for air leakage in intake air system |
FUEL GAUGE DIAGNOSIS
- Using the manufacturer approved diagnostic system monitor, "active fuel level sensor(A)" and "passive fuel level sensor(B)" data logger signals located within the body control module subsection.
| Customer Complaint | Possible Concern | Fuel Pressure | Active Fuel Level Sensor Voltage Reading A | Passive Fuel Level Sensor Voltage Reading B | Action |
|---|---|---|---|---|---|
| Fuel gauge switches on and off intermittently and / or fuel gauge indicates empty while there is fuel still available in the fuel tank | Open circuit | Yes | >3.6v | >3.6v | Refer to the electrical circuit diagrams and check for backed out terminals and circuit faults between, C0390-18 and C0114-1 If no fault is evident then check C0376-18 to C0586R-8, If no fault is evident with the above, remove the fuel pump module and two fuel senders from the fuel tank and check for backed out terminals and circuit faults. Refer to the warranty policy and procedures information if a module/component is suspect |
| Fuel gauge switches on and off intermittently and / or fuel gauge indicates empty while there is fuel still available in the fuel tank | Open circuit | Yes | <3.0v | >3.6v | Refer to the electrical circuit diagrams and check for backed out terminals and circuit faults between, C0390-2 and C0114-6, If no fault is evident then check C0376-2 to C0586R-20 If no fault is evident with the above, remove the fuel sender B (front) from the fuel tank and check for backed out terminals and circuit faults |
| Fuel gauge switches on and off intermittently and / or fuel gauge indicates empty while there is fuel still available in the fuel tank | Open circuit | Yes | >3.6v | <3.0v | Refer to the electrical circuit diagrams and check for backed out terminals and circuit faults between, C0390-3 and C0114-2 If no fault is evident then check C0376-3 to C0586R-21 If no fault can be found with the above check then the active fuel sender A (rear) will need to be removed and the wiring carefully inspected |
| Fuel gauge switches on and off intermittently and / or fuel gauge indicates empty while there is fuel still available in the fuel tank | Electric parkbrake fault (EPB) | Yes | 0.35v to 3.06v | 0.35v to 3.06v | NOTE: Check for correct EPB operation prior to carrying out the following checks. NOTE: The EPB module is calibrated to allow fuel gauge correction for varying gradients (via CAN Bus). Refer to the electrical circuit diagrams and check for backed out terminals and circuit faults at connectors, C2178-31, C2178-32 C2178-9, C2178-10, C2178-15 and C2178-16 Check Earth Point (LH D Post) C2570S (Discovery 4/LR4) C2570T (Range Rover Sport) |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | 0.35v to 3.06v | 0.35v | Check active sender A (rear) for potential hang up/fouling inside of the fuel tank |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | 0.35v | 0.35v to 3.06v | Check passive sender B (front) for potential hang up/fouling inside of the fuel tank |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | >1.0v | 0.35v to 0.54v | Remove from the fuel tank and check all active sender A (rear) blue wires for backed out pin/defective wire |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | 0.35v to 0.44v | >1.0v | Remove from the fuel tank and check all passive sender B (front) blue circuit wires for backed out pin/defective wire |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | >0.55v and within 0.6v of B | >0.55v and within 0.6v of A | Remove fuel pump module and both senders from the fuel tank and check all black wires on the circuit for backed out pin/defective wire |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | >3.2v but <3.6v | 0.35v to 0.54v | Active sender A (rear) internal fault. No repair possible, replace the sender. Refer to the warranty policy and procedures information if a module/component is suspect |
| Fuel gauge indicating fuel present | No fuel present inside tank | No | 0.35v to 0.44v | >3.2v but <3.6v | Passive sender B (front) internal fault. No repair possible, replace the sender. Refer to the warranty policy and procedures information if a module/component is suspect |
| Fuel gauge indicating fuel present | Fuel present inside the fuel tank | No | 0.35v to 3.06v | 0.35v to 3.06v | Check the pressure relief valve inside fuel tank. Check Internal fuel feed pipe is connected to flange |
| Fuel gauge indicating fuel present | Fuel present inside the fuel tank | Yes | 0.35v to 3.06v | 0.35v to 3.06v | Check terminals are correctly latched / installed to the fuel pump module |
| Fuel gauge indicating fuel present but reading an incorrect fuel level | Fuel present inside the fuel tank | Yes | 0.35v to 3.06v | 0.35v to 3.06v | Check the bayonet fitting on the fuel pump module. Check both the active and passive fuel senders are securely located in their brackets |
| Fuel gauge indicating fuel present but reading an incorrect fuel level | Fuel tank - out of shape / sucking in (diesel only) | Yes | 0.35v to 3.06v | 0.35v to 3.06v | Incorrect filler cap installed. Install the correct fuel filler cap (applies to diesel variants only). Refer to the warranty policy and procedures information if a module/component is suspect |
| NOTE |
|---|
| Check for correct EPB operation prior to carrying out the following checks. |
| NOTE |
|---|
| The EPB module is calibrated to allow fuel gauge correction for varying gradients (via CAN Bus). |
DTC INDEX
For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to GENERAL INFORMATION - DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
REMOVAL
| WARNING | After carrying out repairs, the fuel system must be checked visually for leaks. Failure to follow this instruction may result in personal injury. |
| WARNING | This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury. |
| CAUTION | Always carry out the cleaning process before carrying out any repairs to the fuel injection system components. Failure to follow this instruction may result in foreign matter ingress to the fuel injection system. |
| CAUTION | Make sure the workshop area in which the vehicle is being worked on is as clean and as dust free as possible. Foreign matter from work on clutches, brakes or from machining or welding operations can contaminate the fuel system and may result in later malfunction. |
Note. Removal steps in this procedure may contain installation details.
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Scheme 12
- Refer to «PETROL AND PETROL-ETHANOL FUEL SYSTEMS HEALTH AND SAFETY PRECAUTIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/oem-general-information/#general-information-1-of-2) .
- Refer to «FUEL SYSTEM PRESSURE RELEASE - 5.0L»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-system-general-information) .
- Disconnect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/charging-system/#battery-charging-system-general-information) .
- Refer to «FUEL TANK DRAINING»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-system-general-information__fuel-tank-draining) .
- Remove the tamper proof cover.
- Using a suitable transmission jack, lower the fuel tank sufficiently only to access the top of the fuel tank. TORQUE: 45 Nm
- With assistance, remove the fuel tank.
INSTALLATION
- To install, reverse the removal procedure.
SPECIAL TOOL(S) Tool Description Part Number Locking Ring, Fuel Tank 310-123
Scheme 13
| Transmission jack |
GENERAL EQUIPMENT
| WARNING | After carrying out repairs, the fuel system must be checked visually for leaks. Failure to follow this instruction may result in personal injury. |
| WARNING | After the fuel tank drain is complete always fit the sealing covers over the drain ports. Failure to do so will mean that fuel vapor can escape. |
| WARNING | This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury. |
| CAUTION | Make sure the workshop area in which the vehicle is being worked on is as clean and as dust free as possible. Foreign matter from work on clutches, brakes or from machining or welding operations can contaminate the fuel system and may result in later malfunction. |
Note. Removal steps in this procedure may contain installation details.
Scheme 14
Scheme 15
Scheme 16
Scheme 17
- Refer to «PETROL AND PETROL-ETHANOL FUEL SYSTEMS HEALTH AND SAFETY PRECAUTIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/oem-general-information/#general-information-1-of-2) .
- Disconnect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/charging-system/#battery-mounting-and-cables) .
- Raise and support the vehicle.
- Refer to «FUEL TANK DRAINING»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-system-general-information__fuel-tank-draining) .
- Torques: Bolts: 6 Nm Nuts: 3 Nm
- Remove the tamper proof cover.
- Using a suitable transmission jack, lower the fuel tank sufficiently only to access the top of the fuel tank. Torque: 45 Nm
- With assistance, remove the fuel tank.
- Locking Ring, Fuel Tank (310-123). Refer to «SPECIAL TOOL(S)»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-tank-and-lines)
- See figure CAUTION: Take extra care not to damage the fuel tank level sensor float and arm. NOTE: Some variation in the illustrations may occur, but the essential information is always correct.
- To install, reverse the removal procedure.
| WARNING | The spilling of fuel is unavoidable during this operation. Ensure that all necessary precautions are taken to prevent fire and explosion. |
| WARNING | After carrying out repairs, the fuel system must be checked visually for leaks. Failure to follow these instructions may result in personal injury. |
| WARNING | This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury. |
Note. Removal steps in this procedure may contain installation details.
Scheme 18
Scheme 19
Scheme 20
Scheme 21
Scheme 22
Scheme 23
- Remove the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/charging-system/#battery-charging-system-general-information) .
- Raise and support the vehicle.
- Refer to «FUEL TANK DRAINING»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-system-general-information__fuel-tank-draining) .
- Refer to «FUEL FILLER DOOR ASSEMBLY»(/land-rover/range-rover-sport/l320-2009-2013/remont/exterior-body-panels/#body-closures) .
- Remove the RH rear wheel and tire. TORQUE: 140 Nm
- Remove the fender splash shield.
- Remove the tamper proof cover from the fuel tank filler pipe hose clip.
- TORQUE: 4 Nm
- TORQUE: 4 Nm
- To install, reverse the removal procedure.
FUEL PUMP AND SENDER UNIT
SPECIAL TOOL(S) Tool Description Part Number Locking Ring, Fuel Tank 310-123
| Transmission jack |
GENERAL EQUIPMENT
| WARNING | After carrying out repairs, the fuel system must be checked visually for leaks. Failure to follow this instruction may result in personal injury. |
| WARNING | After the fuel tank drain is complete always fit the sealing covers over the drain ports. Failure to do so will mean that fuel vapor can escape. |
| WARNING | This procedure involves fuel handling. Be prepared for fuel spillage at all times and always observe fuel handling precautions. Failure to follow these instructions may result in personal injury. |
| CAUTION | Make sure the workshop area in which the vehicle is being worked on is as clean and as dust free as possible. Foreign matter from work on clutches, brakes or from machining or welding operations can contaminate the fuel system and may result in later malfunction. |
Note. Removal steps in this procedure may contain installation details.
Scheme 24
- Refer to «PETROL AND PETROL-ETHANOL FUEL SYSTEMS HEALTH AND SAFETY PRECAUTIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/oem-general-information/#general-information-1-of-2) .
- Disconnect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover-sport/l320-2009-2013/remont/charging-system/#battery-charging-system-general-information) .
- Raise and support the vehicle.
- Refer to «FUEL TANK DRAINING»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-system-general-information__fuel-tank-draining) .
- Torques: Bolts: 6 Nm Nuts: 3 Nm
- Remove the tamper proof cover.
- Using a suitable transmission jack, lower the fuel tank sufficiently only to access the top of the fuel tank. Torque: 45 Nm
- With assistance, remove the fuel tank.
- Locking Ring, Fuel Tank (310-123). Refer to «SPECIAL TOOL(S)»(/land-rover/range-rover-sport/l320-2009-2013/remont/fuel-system/#fuel-tank-and-lines)
- To install, reverse the removal procedure.
See also:
• FUEL CHARGING AND CONTROLS (V8 5.0L PETROL)
• FUEL CHARGING AND CONTROLS (V8 S/C 5.0L PETROL)
• ENGINE EMISSION CONTROL (V8 5.0L PETROL)
• ENGINE EMISSION CONTROL (V8 S/C 5.0L PETROL)
• EVAPORATIVE EMISSIONS
• GENERAL INFORMATION - DIAGNOSTIC TROUBLE CODE (DTC) INDEX
• PETROL AND PETROL-ETHANOL FUEL SYSTEMS HEALTH AND SAFETY PRECAUTIONS
• FUEL SYSTEM PRESSURE RELEASE - 5.0L
• SPECIFICATIONS
• FUEL TANK DRAINING
• SPECIFICATIONS
• FUEL FILLER DOOR ASSEMBLY
• FUEL TANK AND LINES