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Supercharger Cooling Land Rover Range Rover L322

Cooling Fan 13 illustrations ~1288 words

SPECIFICATIONS

DescriptionNm
Supercharger coolant pump mounting bracket bolts6

TORQUE SPECIFICATIONS

Scheme 44

Scheme 44: COMPONENT LOCATION
Scheme 44: COMPONENT LOCATION
Item NumberDescription
1Charge air coolers
2Supply hose to charge air coolers
3Charge air coolant pump
4Charge air radiator
5Return hose from charge air coolers
6Radiator upper hose

INTRODUCTION

The supercharger cooling system cools the pressurized charge air from the supercharger. The supercharger cooling system consists of

  1. A charge air coolant pump.
  2. A charge air radiator.
  3. Two charge air coolers.
  4. Connecting hoses and pipes.

The supercharger cooling system is operationally independent of the engine cooling system, but connected to it at the radiator upper hose. The connection with the engine cooling system accommodates thermal expansion and retraction of the coolant in the supercharger cooling system, and enables filling and draining of the supercharger cooling system.

CHARGE AIR COOLANT PUMP

Item NumberDescription
1Coolant inlet connection
2Coolant outlet connection
3Electrical connector

The charge air coolant pump is an electric pump attached to the left-hand (LH) side of the radiator pack frame. Hoses connect the inlet of the charge air coolant pump to the charge air radiator, and the outlet to the charge air coolers. An electrical connector provides the interface between the motor of the charge air coolant pump and the vehicle wiring.

Scheme 45

Scheme 45: CHARGE AIR RADIATOR
Scheme 45: CHARGE AIR RADIATOR
Item NumberDescription
1Coolant outlet connection
2Coolant inlet connection

The charge air radiator is installed in the radiator pack frame, immediately behind the condenser cooling fan.

The coolant inlet and outlet connections of the charge air radiator are installed in the right-hand (RH) and left-hand (LH) end tanks respectively. Hoses connect the inlet of the charge air radiator to the charge air coolers, and the outlet to the charge air coolant pump.

CHARGE AIR COOLERS

A charge air cooler is installed in each intake manifold. Refer to Intake Air Distribution and Filtering .

CONTROL DIAGRAM

Note. A = Hardwired.

Scheme 46

Scheme 46: CONTROL DIAGRAM
Scheme 46: CONTROL DIAGRAM
Item NumberDescription
1Battery
2BJB (battery junction box) 2 (250 A megafuse)
3EJB (engine junction box) (charge air coolant pump relay)
4Charge air coolant pump
5ECM (engine control module)

OPERATION

Item NumberDescription
1RH charge air cooler
2Engine
3LH (left hand) charge air cooler
4Charge air coolant pump
5Charge air radiator
6Radiator upper hose

Electrical power for the charge air coolant pump is supplied from the charge air coolant pump relay in the engine junction box (EJB). When the relay is energized, it connects power from the battery, via the battery junction box (BJB) 2 and engine junction box (EJB), to the charge air coolant pump. Operation of the relay is controlled by the engine control module (ECM). The charge air coolant pump relay is energized continuously while the ignition is in power mode 6.

When the charge air coolant pump is running, coolant flows from the pump outlet through the charge air coolers, the charge air radiator and back to the pump inlet.

PRINCIPLE OF OPERATION

For a detailed description of the engine cooling system and operation, refer to the relevant Description and Operation instructions of the workshop information. Refer to Supercharger Cooling .

INSPECTION AND VERIFICATION

CAUTIONDiagnosis 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.

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION Mechanical Electrical Coolant leaks Coolant Hoses Coolant expansion tank Radiator Heater core Accessory drive belt Viscous fan Fuses Harnesses Loose or corroded connector(s) Engine Coolant Temperature (ECT) sensor
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. 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

SymptomPossible CausesAction
Coolant lossHoses Hose connections Radiator Water pump Heater core Gaskets Engine casting cracks Engine block core plugsCarry out a visual inspection. If there are no obvious leaks, carry out a cooling system pressure test. Rectify any leaks as necessary.
OverheatingLow/Contaminated coolant Thermostat Viscous fan ECT sensor Restricted air flow over the radiatorCheck the coolant level and condition. Carry out a cooling system pressure test. Rectify any leaks as necessary. Check the thermostat and rectify as necessary. Check the viscous fan operation, make sure the viscous fan rotates freely. Check for obstructions to the air flow over the radiator. Rectify as necessary.
Engine not reaching normal temperatureThermostat Viscous fan Thermostat Electric fan Fan speed moduleCheck the thermostat operation. Check the viscous fan operation, make sure the viscous fan is not seized. Rectify as necessary.

DTC INDEX

For a list of Diagnostic Trouble Codes (DTCs) that could be logged on this vehicle, please refer to Diagnostic Trouble Code (DTC) Index - 5.0L, DTC: Module Name: Engine Control Module .

Note. Cooling system partial drain and refill is used on all supercharger cooling procedures.

Scheme 47

Scheme 47: SUPERCHARGER COOLING SYSTEM DRAINING, FILLING AND BLEEDING
Scheme 47: SUPERCHARGER COOLING SYSTEM DRAINING, FILLING AND BLEEDING
  1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
  2. Remove the engine cover. Refer to «Engine Cover - 4.2L, Vehicles With: Supercharger»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
  3. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
  4. See figure CAUTION: Engine coolant will damage the paint finished surfaces. If spilled, immediately remove the coolant and clean the area with water. CAUTION: Damage to the charge air cooler coolant pump will occur if the pump is allowed to cavitate. NOTE: With the ignition key turned to position II the charge air coolant pump will run, to aid coolant bleed. Make sure the charge air coolant pump is primed prior to running the pump. Top-up and bleed the supercharger cooling system. Remove the coolant expansion tank cap. Loosen the coolant expansion tank bleed screw. Turn the ignition key to position II. Add coolant to the expansion tank as required.
  5. When a clear thread of coolant runs from the expansion tank, tighten the bleed screw.
  6. Check and top-up the coolant. Turn the ignition switch to the OFF position. Install the coolant expansion tank cap.
  7. Install the engine cover. Refer to «Engine Cover - 4.2L, Vehicles With: Supercharger»(/land-rover/range-rover/l322-2009-2012/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .

REMOVAL

WARNINGSince injury such as scalding could be caused by escaping steam or coolant, make sure the vehicle cooling system is cool prior to carrying out this procedure.
CAUTIONEngine coolant will damage the paint finished surfaces. If spilled, immediately remove the coolant and clean the area with water.

Note. Some variation in the illustrations may occur, but the essential information is always correct.

Note. This procedure covers the removal and installation of the supercharger auxiliary coolant pump.

Scheme 48

Scheme 48
Scheme 48

Scheme 49

Scheme 49
Scheme 49
  1. Remove the air cleaner. Air Cleaner - Refer to «INTAKE AIR DISTRIBUTION AND FILTERING (V8 S/C 5.0L GASOLINE)»(/land-rover/range-rover/l322-2009-2012/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-50l-gasoline)
  2. See figure Release the power assisted steering (PAS) reservoir, and move aside.
  3. Disconnect the 2 coolant pump hoses. Clamp the relevant hoses, to minimize the coolant loss. Release the 2 clips.
  4. See figure Remove the coolant pump. Remove the clamp bolt. Disconnect the electrical connector.

Scheme 50

Scheme 50: INSTALLATION
Scheme 50: INSTALLATION
  1. Install the coolant pump and align with bracket register. Connect the electrical connector. Tighten the bolt to 6 Nm (4 lb.ft).
  2. Connect the coolant pump hoses. Secure with the clips. Remove the hose clamps.
  3. Remove the coolant expansion tank cap.
  4. See figure Release the coolant bleed screw. When coolant runs from the bleed point bubble-free, tighten the bleed screw.
  5. Install the PAS reservoir.
  6. Install the air cleaner. Air Cleaner - Refer to «INTAKE AIR DISTRIBUTION AND FILTERING (V8 S/C 5.0L GASOLINE)»(/land-rover/range-rover/l322-2009-2012/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-50l-gasoline)
  7. Check and top-up the coolant.
  8. Start the engine and allow to run for 30 seconds, stop the engine.
  9. Check and top-up the coolant.
  10. If required, carry out a long drive cycle. Refer to «Powertrain Control Module (PCM) Long Drive Cycle Self-Test»(/land-rover/range-rover/l322-2009-2012/remont/engine-control-systems/#electronic-engine-controls-v8-50l-petrol__powertrain-control-module-pcm-long-drive) .
WARNINGSince injury such as scalding could be caused by escaping steam or coolant, make sure the vehicle cooling system is cool prior to carrying out this procedure.
CAUTIONEngine coolant will damage the paint finished surfaces. If spilled, immediately remove the coolant and clean the area with water.

Note. Some variation in the illustrations may occur, but the essential information is always correct.

Note. This procedure covers the removal and installation of the supercharger auxiliary coolant pump.

Scheme 51

Scheme 51
Scheme 51

Scheme 52

Scheme 52
Scheme 52

Scheme 53

Scheme 53
Scheme 53

Scheme 54

Scheme 54
Scheme 54
  1. Refer to «Air Cleaner LH»(/land-rover/range-rover/l322-2009-2012/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-50l-gasoline) .
  2. See figure WARNING: Fluid loss is unavoidable, use absorbent cloth or a container to collect the fluid. CAUTION: Make sure that all openings are sealed. Use new blanking caps. Clamp the hoses to minimize coolant loss.

INSTALLATION

  1. Torque: 6 Nm
  2. See figure When coolant runs from the bleed point bubble-free, tighten the bleed screw.
  3. Install the power steering fluid reservoir.
  4. Refer to «Air Cleaner LH»(/land-rover/range-rover/l322-2009-2012/remont/mechanical/#intake-air-distribution-and-filtering-v8-sc-50l-gasoline) .
  5. Check and top-up the coolant.
  6. Start the engine and allow to run for 30 seconds, stop the engine.
  7. Check and top-up the coolant.
  1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
  2. Raise and support the vehicle.
  3. Remove the radiator assembly. Refer to «RADIATOR»(/land-rover/range-rover/l322-2009-2012/remont/cooling-fan/#supercharger-cooling)
  4. Remove the supercharger radiator. Release the 2 clips.
  1. Install the supercharger radiator. Secure with the clips.
  2. Install the radiator assembly. Refer to «RADIATOR»(/land-rover/range-rover/l322-2009-2012/remont/cooling-fan/#supercharger-cooling)
  3. Connect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .

Note. Removal steps in this procedure may contain installation details.

Scheme 55

Scheme 55: REMOVAL
Scheme 55: REMOVAL

Scheme 56

Scheme 56
Scheme 56
  1. Disconnect the battery ground cable. Refer to «Specifications»(/land-rover/range-rover/l322-2009-2012/remont/charging-system/#battery-and-charging-system-general-information) .
  2. Raise and support the vehicle.
  3. Refer to «SUPERCHARGER COOLING SYSTEM DRAINING, FILLING AND BLEEDING - GENERAL PROCEDURES»(/land-rover/range-rover/l322-2009-2012/remont/cooling-fan/#supercharger-cooling)
  4. Refer to «Condenser Fan - 5.0L NA V8 - AJ133/5.0L SC V8 - AJ133»(/land-rover/range-rover/l322-2009-2012/remont/automatic-hvac-system/#air-conditioning) .
  5. See figure CAUTION: Always protect the cooling pack elements to prevent accidental damage.
  1. To install reverse the removal procedure.

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