warning JAGUAR XFR 2010 1.G Workshop Manual

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

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

Proceed to the next step. A3 'Cooling fan is operating permanently' A3: COOLING FAN IS OPERATING PERMANENTLY 1 The cooling fan is operating permanently Is the customer reported symptom that the cooling fan is operating permanently at maximum speed?
Yes
The cooling fan is operating permanently
Proceed to the test step A5 'Cooling fan is operating permanently'
No
The cooling fan is NOT operating permanently
Proceed to the next step. A4 'Cooling fan is NOT operating' A4: COOLING FAN IS NOT OPERATING 1 The cooling fan is NOT operating Is the cooling fan NOT operating?
Yes
The cooling fan is NOT operating
Proceed to the test step A6 'Cooling fan is NOT operating'
No
No fault found. Verify customer concern of cooling fan operation A5: COOLING FAN IS OPERATING PERMANENTLY
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 1 Using the manufacturer approved diagnostic system check datalogger signal – Electric Fan PWM Control - Commanded (0X03F9) - 2 Record the value of the datalogger signal – Electric Fan PWM Control - Commanded (0X03F9) - Is the value of the datalogger signal – Electric Fan PWM Control - Commanded (0X03F9) -between 5% &
16% whilst the cooling fan is operating?
Yes
The cooling fan should not be rotating in this PWM range
Refer to the electrical circuit diagrams and check the following circuit's for short circuit to ground, short
circuit to power, open circuit, high resistanceRefer to the electrical circuit diagrams and check the following
connectors for signs of water ingress, and pins for damage and/or corrosionEngine control module,
connector and wiringCircuit reference - ECFC -Cooling fan motor control unit connector and wiringCircuit
reference - VBATT -Circuit reference - IGN -Circuit reference - PWM -Circuit reference - GND -Battery
junction box, connector and wiringEngine junction box, connector and wiringCheck and install a new cooling
fan
No
Proceed to the next step. A6 'Cooling fan is NOT operating' A6: COOLING FAN IS NOT OPERATING
CAUTION: Ensure hood is closed and there are not any loose objects in front of the vehicle 1 Using the manufacturer approved diagnostic system command datalogger signal – Electric Fan PWM Control - Commanded (0X03F9) -to 30% Did the cooling fan start rotating?
Yes
Proceed to the next step. A7 'Electric Fan PWM Control'
No
Proceed to the step. A8 'Wiring check' A7: ELECTRIC FAN PWM CONTROL 1 Using the manufacturer approved diagnostic system command datalogger signal – Electric Fan PWM Control - Commanded (0X03F9) -to 90% Did the cooling fan rotating speed increase?
Yes
Using the manufacturer approved diagnostic system disable output state control function for this signal
and allow the cooling fan to stop rotating
No fault found. Verify customer concern of cooling fan operation
Proceed to the test step A9 'Cooling fan validation procedure'
No
Proceed to the step. A8 'Wiring check' A8: WIRING CHECK 1 Refer to the electrical circuit diagrams and check the following circuit's for short circuit to ground, short circuit to power, open circuit, high resistance 2 Refer to the electrical circuit diagrams and check the following connectors for signs of water ingress, and pins for damage and/or corrosion

Engine control module, connector and wiring
- Circuit reference - ECFC -
Cooling fan motor control unit connector and wiring
- Circuit reference - VBATT -
- Circuit reference - IGN -
- Circuit reference - PWM -
- Circuit reference - GND -
Battery junction box, connector and wiring
- Megafuses

Published: 11-May-2011
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Cooling System Draining
and Vacuum Filling
General Procedures

Draining

1. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).


2. WARNING: Release the cooling system pressure by slowly
turning the coolant expansion tank cap a quarter of a turn.
Cover the expansion tank cap with a thick cloth to prevent
the possibility of scalding. Failure to follow this instruction
may result in personal injury.
CAUTIONS:


Since 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


Be prepared to collect escaping coolant.



3. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.


4. CAUTION: Be prepared to collect escaping coolant.

12.














13.
Set the heater controls to maximum.


14. CAUTION: Observe the engine temperature gauge. If the engine
starts to over-heat switch off immediately and allow to cool. Failure to
follow this instruction may cause damage to the vehicle
Start the engine and idle until hot air is emited at the face registers.

15. Switch the heater off.

16. Raise the engine speed to 2000 RPM for eight minutes.


17. CAUTION: Switch off the engine and allow the coolant temperature
to go cold.
Switch the engine off.

18. Visually check the engine and cooling system for signs of coolant
leakage.


19. WARNING: When releasing the cooling system pressure, cover the
coolant expansion tank cap with a thick cloth.
CAUTIONS:


Since 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


Make sure the coolant level remains above the "COLD FILL RANGE"
lower level mark.


NOTE: When the cooling system is warm, the coolant will be
approximately 10mm above the upper level mark on the expansion tank
with the cap removed.
Check and top-up the coolant if required.

Published: 14-Feb-2013
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Cooling System Partial Draining, Filling and Bleeding V8 S/C 5.0L Petrol
General Procedures

Draining

1. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.

2. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).

3. WARNINGS:


Release the cooling system pressure by slowly turning
the coolant expansion tank cap a quarter of a turn. Cover
the expansion tank cap with a thick cloth to prevent the
possibility of scalding. Failure to follow this instruction may
result in personal injury.


Be prepared to collect escaping fluid.


CAUTION: Since 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.



4. CAUTION: Be prepared to collect escaping fluids. www.JagDocs.com

15. WARNING: When releasing the cooling system pressure, cover the
coolant expansion tank cap with a thick cloth.
CAUTIONS:


Since 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.


Make sure the coolant level remains above the "COLD FILL RANGE"
lower level mark.


NOTE: When the cooling system is warm, the coolant will be
approximately 10mm above the upper level mark on the expansion tank
with the cap removed.
Check and top-up the coolant if required.

Published: 14-Feb-2013
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Cooling System Draining,
Filling and Bleeding V8 S/C 5.0L Petrol
General Procedures

Draining

1. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.

2. Refer to: Secondary Bulkhead Center Panel (501-02 Front End Body Panels, Removal and Installation).

3. Refer to: Air Deflector (501-02 Front End Body Panels, Removal and Installation).

4. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).

5. WARNINGS:


Release the cooling system pressure by slowly turning
the coolant expansion tank cap a quarter of a turn. Cover
the expansion tank cap with a thick cloth to prevent the
possibility of scalding. Failure to follow this instruction may
result in personal injury.


Be prepared to collect escaping fluid.


CAUTION: Since 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.



6. CAUTION: Be prepared to collect escaping fluids.

14. Visually check the engine and cooling system for signs of coolant
leakage.


15. WARNING: When releasing the cooling system pressure, cover the
coolant expansion tank cap with a thick cloth.
CAUTIONS:


Since 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.


Make sure the coolant level remains above the "COLD FILL RANGE"
lower level mark.


NOTE: When the cooling system is warm, the coolant will be
approximately 10mm above the upper level mark on the expansion tank
with the cap removed.
Check and top-up the coolant system as required when cool.

16. Refer to: Air Deflector (501-02 Front End Body Panels, Removal and Installation).

17. Refer to: Radiator Splash Shield (501-02 Front End Body Panels, Removal and Installation).

18. Refer to: Secondary Bulkhead Center Panel (501-02 Front End Body Panels, Removal and Installation).

Published: 19-Nov-2013
Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol - Auxiliary Radiator
Removal and Installation

Removal


NOTE: Removal steps in this procedure may contain installation details.

1. Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).

2. Refer to: Air Cleaner RH (303-12C Intake Air Distribution and Filtering - V8 5.0L Petrol, Removal and Installation).


3. CAUTION: Be prepared to collect escaping coolant.




















4. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.

5. Refer to: Cooling System Partial Draining, Filling and Bleeding - V8 5.0L Petrol (303-03C Engine Cooling - V8 5.0L Petrol/V8 S/C 5.0L Petrol, General Procedures).

6. Refer to: Fender Splash Shield (501-02 Front End Body Panels, Removal and Installation). www.JagDocs.com