2010 JAGUAR XFR Radiator hose

PINPOINT TEST B : TIP-IN MOAN TEST
CONDITIONS DETAILS/RESULTS/ACTIONS B1: CHECK THE AIR CLEANER 1 Check the air cleaner.
Check the air cleaner, inlet tube, outlet tube, resonators and all other components associated with
the air induction system for correct installation and tightness of all connections. Are the components OK? Yes
GO to B2. No
Correct the condition. Repeat the Road Test as outlined. B2: CHECK THE EXHAUST SYSTEM 1 Carry out the exhaust system neutralizing procedure in this section. Is the exhaust system OK? Yes
GO to B3. No
Repair as necessary. Restore vehicle. Repeat the Road Test as outlined. B3: CHECK THE POWER STEERING 1 Remove the auxiliary drive belt and test for tip-in moan. Is the tip-in moan OK? Yes
Repair the power steering as necessary. For additional information, refer to Section 211-00.
No
Check and install new engine/transmission mounts as necessary. Repeat Road Test as outlined.
PINPOINT TEST C : IDLE BOOM/SHAKE/VIBRATION/SHUDDER TEST
CONDITIONS DETAILS/RESULTS/ACTIONS C1: CHECK CABLE/HOSES 1 Check the engine compartment for any component that may be grounding between the engine and body or chassis. Example: air conditioning (A/C) hoses. Are the components OK? Yes
GO to C2. No
Correct the condition. Repeat the Road Test as outlined. C2: CHECK THE COOLING RADIATOR 1 Check the engine cooling radiator mountings and bushings for security and condition. Check the radiator installation for any component that may have a touch condition. Are the installation and bushings OK? Yes
GO to C3. No
Correct the condition. Repeat the Road Test as outlined. C3: CHECK THE EXHAUST SYSTEM 1 Carry out the exhaust system neutralizing procedure in this section. Is the exhaust system OK? Yes
Check and install new engine/transmission mounts as necessary. Repeat Road Test as outlined.
No
Repair as necessary. Repeat Road Test.
PINPOINT TEST D : WHEEL END VIBRATION ANALYSIS TEST CONDITIONS DETAILS/RESULTS/ACTIONS D1: INSPECT THE TIRES 1 Inspect the tires.
Raise and support the vehicle. REFER to: (100-02 Jacking and Lifting)
Jacking (Description and Operation), Lifting (Description and Operation).
Inspect the tires for:
Correct tire size
Tire/wheel compatibility
Wear or damage

1 Engine vent hose 2 Throttle 3 Coolant expansion tank 4 Bleed point 5 Throttle body heater hose 6 Engine oil cooler 7 Engine block heater (110 V version shown) or drain plug 8 Coolant supply/expansion hose 9 Outlet tube 10 Radiator upper hose 11 Supercharger cooling system connecting hose 12 Auxiliary radiator supply hose 13 Auxiliary radiator return hose 14 Auxiliary radiator 15 Transmission fluid cooler supply and return hoses 16 Transmission fluid cooler 17 Heater core supply and return hoses 18 Heater manifold 19 Radiator lower hose 20 Cooling fan 21 Thermostat 22 Coolant pump 23 Radiator

Published: 11-May-2011
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Engine Cooling - Overview
Description and Operation

OVERVIEW

The engine cooling system maintains the engine within an optimum temperature range under changing ambient and engine
operating conditions. The system is a pressurized expansion tank system with continuous bleeds to separate air from the
coolant and prevent the formation of air locks. The engine cooling system also provides:
Heating for:
- The passenger compartment. For additional information, refer to 412-01 Climate Control.
- The throttle body.
Cooling for:
- The engine oil cooler. For additional information, refer to 303-01F Engine - 5.0L, Vehicles With: Supercharger or
303-01E Engine - 5.0L, Vehicles Without: Supercharger.
- The transmission fluid cooler. For additional information, refer to 307-02B Transmission/Transaxle Cooling -
5.0L/3.0L Diesel.
The primary components of the engine cooling system are the:
Coolant pump.
Thermostat.
Radiator.
Auxiliary radiator (SC (supercharger) vehicles only).
Cooling fan.
Expansion tank.
Engine oil cooler.
Outlet tube and heater manifold.
Connecting hoses and pipes.

14 Radiator 15 Auxiliary radiator 16 Connection with supercharger cooling system
System Operation
When the engine is running, the coolant is circulated around the engine cooling system by the coolant pump. From the coolant
pump, coolant flows through the cylinder heads and the engine oil cooler into the cylinder block and the heater manifold.

In the cylinder block, the coolant flows forwards to the outlet tube. When the coolant is cold, the thermostat is closed and the
coolant flows direct from the outlet tube back to the coolant pump. Once the coolant reaches operating temperature the
thermostat begins to open, to control system temperature, and coolant flows from the outlet tube to the coolant pump via the
radiator and, on SC (supercharger) vehicles, the auxiliary radiator. When the thermostat is open, the coolant flow through the
radiator(s) also generates a coolant flow through the transmission fluid cooler.

From the heater manifold the coolant flows through the electronic throttle and the heater core, in parallel circuits that are
unaffected by the position of the thermostat. From the electronic throttle, the coolant merges with bleed coolant from the
coolant pump and the outlet tube and flows to the expansion tank. From the heater core, the coolant flows back to the inlet of
the coolant pump.

Expansion and contraction of the coolant is accommodated by an air space in the expansion tank and the compliance of the
flexible hoses.

If the coolant level in the expansion tank decreases below a predetermined value, the level sensor connects a ground to the
instrument cluster, which activates the appropriate warning. For additional information, refer to 413-01 Instrument Cluster.

The cooling fan is operated by a fan control module integrated into the cooling fan motor. The fan control module regulates the
voltage, and thus speed, of the cooling fan motor in response to a PWM (pulse width modulation) signal from the ECM (engine
control module).

The cooling fan receives a battery feed and an ignition feed from the EJB (engine junction box). The ignition feed is supplied
from the main relay in the EJB, which is controlled by the ECM.
The ECM calculates the required fan speed from the engine temperature, A/C (air conditioning) system pressure and transmission fluid temperature. Under hot operating conditions, the fan may continue to operate for 4 minutes after the engine
has been switched off.



COOLANT PUMP Component Description



Item Description 1 Inlet connection 2 Pump body 3 Outlet flange to RH cylinder head 4 Outlet to engine oil cooler 5 Outlet flange to LH cylinder head

1 Locating spigot (2 off) 2 Upper hose connection 3 Supercharger cooling system connection 4 Auxiliary radiator inlet hose connection 5 Support (2 off) 6 Drain plug 7 Lower hose connection 8 Auxiliary radiator outlet hose connection 9 Transmission fluid cooler inlet hose connection The radiator is a cross flow type with an aluminum core and plastic end tanks. The radiator is part of the cooling module and is
attached to the vehicle by locating spigots and supports integrated into the end tanks. The supports are installed in rubber
bushes located in mounting brackets on the front subframe. The locating spigots are installed in rubber bushes located in
mounting brackets on the front crossmember.

The two end tanks incorporate connections for the upper and lower hoses, the coolant supply hose of the transmission fluid
cooler and, on SC vehicles, the supply and return hoses of the auxiliary radiator. A drain plug is installed in the bottom of the LH (left-hand) end tank. Radiator (Supercharger Vehicles) RADIATOR

1 Return hose connection 2 Supply hose connection 3 Bottom bracket 4 Top bracket The auxiliary radiator is connected in parallel with the (main) radiator to increase the engine cooling capacity on SC vehicles. The auxiliary radiator is installed in an air duct, to the right of the cooling module, which takes cooling air from the RH (right-
hand) grille in the front bumper. Two spigots on the top of the auxiliary radiator provide the coolant supply and return
connections with the main radiator.

A Outlet tube on naturally aspirated vehicles B Outlet tube on supercharger vehicles 1 Bleed hose connection 2 Radiator upper hose connection 3 Cylinder block connections 4 Thermostat hose connection www.JagDocs.com

Published: 17-Apr-2014
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Engine Cooling V8 5.0L
Petrol/V8 S/C 5.0L Petrol
Diagnosis and Testing

Principle of Operation

For a detailed description of the engine cooling system and operation, refer to the relevant description and operation section of
the workshop manual. Engine Cooling, Section - 303-03

Inspection and Verification


WARNING: Moving parts can cause severe injury, keep clear of moving parts, never place your hands or any part of your
body near to moving parts


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
NOTES:


Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific
customer complaint and carry out the recommendations as required.


If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation
of a new module/component.


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
Cooling fan
Fuses
Harnesses
Loose or corroded connector(s)
Engine coolant temperature 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

Symptom Possible Causes Action Coolant loss
Hoses
Hose connections
Radiator
Water pump
Heater core
Gaskets
Engine casting cracks
Engine block core
plugs Carry out a visual inspection. If there are no obvious leaks, carry out a
cooling system pressure test. Rectify any leaks as necessary Overheating
Low/contaminated
coolant
Thermostat
Cooling fan Check 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 cooling fan operation, make sure the cooling fan
rotates freely. Check for obstructions to the air flow over the radiator.
Rectify as necessary