2011 FORD KUGA Manual Temperature Control

All-wheel drive control unit
E100663
14
3
2
5
Description
Item
Electronic Control Unit
1
Control valve
2
Pressure/temperature sensor
3
Electrical connection CAN (controller area
network) databus
4
Electric feed pump connection
5
The all-wheel drive control unit is bolted directly to
the housing of the Haldex clutch.
It forms one unit made up of the control valve, a
pressure/temperature sensor, and a control
module. It receives signals from the PCM and from
the ABS control module via the CAN data bus. The
control module in the control unit uses these
signals to determine the fluid pressure that is
needed to actuate the clutch plates depending on
the requirement. This determines how much torque
should be transmitted to the rear wheels. All-wheel
drive is deactivated if a fault occurs in the all-wheel
drive control unit.
A preload of approx. 80 Nm is always present at
the Haldex clutch. The temperature sensor of the Haldex clutch is
installed near the control valve in the control unit
and is surrounded by the hydraulic fluid. The
temperature is transmitted to the control module
and is used for adaptation to the changing viscosity
of the hydraulic fluid. If the hydraulic fluid is cold,
the control valve has to be opened slightly more
than requested. This allowance has to be reduced
as the temperature increases. The normal working
temperature of the hydraulic fluid is between +40
°C and +60 °C. If the temperature rises above 100
°C, the clutch is depressurised; if the temperature
falls below 95 °C, the clutch is pressurised again.
All-wheel drive is deactivated and a diagnostic
trouble code set if a fault occurs in the temperature
sensor.
With Haldex Generations I and II, the control valve
was actuated via a stepper motor. With Haldex
Generation III, the stepper motor has been omitted.
The control valve is now actuated via a solenoid
valve. The solenoid valve is actuated by the control
module in the all-wheel drive control unit by means
of pulse width modulation. The pulse width
modulation determines the position of the
adjustment spindle and thus the opening cross
section of the return hole. This is how the pressure
at the working piston of the plates is determined.
If the return hole is fully closed, maximum pressure
is applied to the plates. If the return hole is fully
open, the plates are unpressurized.
Electric feed pump
The electric feed pump is installed in the clutch
unit. It works according to the gerotor principle.
The main purpose of the feed pump is to fill the
pressure accumulator and the space behind the
pump plunger with hydraulic fluid, thereby ensuring
a fast response time of the Haldex clutch. The feed
pump used in the third generation is designed to
achieve an even higher pressure than the base
pressure of 4 bar. It is supplied with current by the
control module in the all-wheel drive control unit
when the engine is running above approx. 400 rpm.
Pressure control - 3rd generation
Haldex clutch
G1076981en2008.50 Kuga8/2011
205-02-
10
Rear Drive Axle/Differential
205-02- 10
DESCRIPTION AND OPERATION
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Action
Possible Sources
Symptom
• CHECK the engine compon-ents for wear or damage. Make
sure that all components are
within specification. INSTALL
new components as necessary.
Engine - 2.5L Duratec-ST (VI5)
-
REFER to: Specifications (303-
01 Engine - 2.5L Duratec
(147kW/200PS) - VI5,
Specifications).
Engine - 2.0L Duratorq-TDCi
(DW) Diesel -
• Engine components
- Pistons.
- Piston rings.
- Connecting rod big end,main bearing or thrust
bearing journals.
- Connecting rods bent or damaged.
• Noisy running or engine noise
Engine - Oil Leaks
NOTE:
Before installing new gaskets or oil seals,
make sure that the fault is clearly established.
If the oil leak cannot be identified clearly by a visual
inspection, carry out an ultraviolet (UV) test:
Ultraviolet (UV) Testing
1. Clean the engine and transmission with a suitable cleaning fluid.
2. Pour the UV-test fluid in accordance with the quantity specified by the manufacturer through
the oil filler neck into the engine and install the
oil filler cap.
WARNING: Vehicles with manual transaxle,
shift the transaxle into Neutral. Failure to
follow this instruction may result in
personal injury.
3. Start the engine and let it run for about five minutes.
4. Switch off the engine.
NOTE: If no leak can be found, road test the
vehicle under various loads and check the engine
for leaks again.
5. Check the engine for oil leaks using a suitable UV lamp.
6. Rectify any leaks found and check the engine for oil leaks.
Measure the compression pressure
NOTE: The powertrain control module (PCM)
receives an error message when the fuel pump
relay is removed or electrical components are disconnected. This error message must be deleted
from the fault memory using the Ford diagnostic
equipment after completing the compression test.
NOTE:
Valve clearance must be set correctly
before performing a compression test. Make sure
the engine is at the normal operating temperature.
NOTE: The varying design of compression
checking devices and fluctuating starter motor
speeds normally only allows for a comparison to
be made of the compression pressures in all
cylinders.
G1055128en2008.50 Kuga8/2011
303-00- 9
Engine System - General Information
303-00- 9
DIAGNOSIS AND TESTING
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Engine Cooling — 2.5L Duratec (147kW/200PS) - VI5 – Overview
Auxiliary coolant pump
An electrically operated auxiliary coolant pump is
installed on vehicles with a trailer coupling and/or
additional heating. The auxiliary coolant pump
ensures that the coolant is circulated when the
coolant pump (which is driven by the engine) is not
running.
The additional heating uses the auxiliary coolant
pump to circulate hot coolant through the heat
exchanger and the engine.
On vehicles with a trailer coupling the auxiliary
coolant pump is switched on for 6 minutes by the
PCM (powertrain control module) if the coolant
temperature exceeds 106°C when the engine is
switched off. This prevents the coolant circuit from
overheating. This could happen particularly if the
engine is switched off after towing a heavy trailer
up a steep hill before there has been sufficient time
for cooling.
G1088220en2008.50 Kuga8/2011
303-03-3
Engine Cooling
303-03- 3
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Engine Cooling
Special Tool(s) / General EquipmentPressure Tester, Cooling
System
303-396 (24-001 A)
IA24001A
Adaptor for 303-396
303-396-09
E55030
Ford approved diagnostic tool
Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanicalor electrical damage.
Visual Inspection Chart
Electrical
Mechanical
– Fuse(s)
– Wiring harness
– Electricalconnector(s)
– Engine coolant temperature (ECT)
sensor
– Cooling fan motor
– Cooling fan module
– Powertrain control module (PCM)
– Coolant shut off valve
– Coolant degas shut off valve
– Coolant leaks
– Gaskets/seals
– Core plug(s)
– Hose(s)/hose joints
– Coolant expansion
tank cap and seal(s)
– Coolant expansion tank
– Radiator
– Coolant pump
– Thermostat
– Heater core
– Exhaust gas recircu- lation (EGR) cooler
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 diagnostic tab within
the Ford approved diagnostic tool.
G1058974en2008.50 Kuga8/2011
303-03- 4
Engine Cooling
303-03- 4
DIAGNOSIS AND TESTING
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Action
Possible Sources
Symptom
• Check the fuel system pres-sure.
• Low fuel system pressure.
• Poor starting
• CHECK the system for fuelleak(s). REPAIR the system as
necessary.
• Fuel system leak.
• INSPECT the fuel system.INSTALL new components as
necessary. TEST the system
for normal operation.
• Fuel system restriction.
• INSTALL a new fuel filter.
• Fuel filter blocked.
• INSTALL a new air cleanerelement.
• Air cleaner element blocked.
• INSTALL a new engine oil filterand engine oil.
• Incorrect engine oil.
• DRAIN and REFILL the powersteering system with the correct
fluid.
REFER to: Power Steering
System Filling (211-00
Steering System - General
Information, General Proced-
ures).
• Incorrect power steering fluid.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• CKP sensor.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• Engine coolant temperature
(ECT) sensor.
• INSPECT the fuel injectors.CLEAN the fuel injectors or
INSTALL a new set of injectors
as required only after the
checks have been carried out.
REFER to: Fuel Injectors (303-
04 Fuel Charging and
Controls - 2.5L Duratec
(147kW/200PS) - VI5,
Removal and Installation).
• Fuel injector(s).
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• Fuel rail fuel pressure sensor.
G1183441en2008.50 Kuga8/2011
303-04A-
6
Fuel Charging and Controls
— 2.5L Duratec (147kW/200PS) -
VI5
303-04A- 6
DIAGNOSIS AND TESTING
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Action
Possible Sources
Symptom
• REFER to:Engine Ignition
(303-07 Engine Ignition - 2.5L
Duratec (147kW/200PS) -
VI5, Diagnosis and Testing).
• Engine ignition.
• Engine misfire
• CHECK for signs of contamina-tion such as strange odors from
the fuel tank.
• If contaminated fuel is found, DRAIN the complete fuel
system. FLUSH the fuel system
through with clean gasoline.
REFER to: Fuel Tank Draining
(310-00 Fuel System -
General Information, General
Procedures).
INSTALL a new fuel filter.
• INSPECT the fuel injectors. CLEAN the fuel injectors or
INSTALL a new set of injectors
as required only after the
checks have been carried out.
• INSTALL a new fuel rail.
REFER to: Fuel Rail(303-04
Fuel Charging and Controls -
2.5L Duratec (147kW/200PS)
- VI5, Removal and Installa-
tion).
• Incorrect or contaminated fuel.
• Check the fuel system pres-sure.
• Low fuel system pressure.
• REFER to:Engine Cooling
(303-03 Engine Cooling,
Diagnosis and Testing).
• Engine operating temperature
too high.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• ECT sensor.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• CKP sensor.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• CMP sensor.
• Carry out a full enginediagnosis using the guided
diagnostic menu in the Ford
diagnostic equipment.
• KS.
G1183441en2008.50 Kuga8/2011
303-04A-
16
Fuel Charging and Controls
— 2.5L Duratec (147kW/200PS) -
VI5
303-04A- 16
DIAGNOSIS AND TESTING
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Turbocharger – Overview
Turbocharger(s)
CAUTION: Do not switch off the engine
while it is running at high speed. If the
engine is switched off while it is running
at high speed, the turbocharger will
continue to run after the engine oil
pressure has already dropped to zero. This
will cause premature wear in the
turbocharger bearings.
A TC consists of an exhaust turbine located in the
exhaust gas flow, this turbine is connected to a
compressor by a shaft. The turbine is made to
rotate by the exhaust gas flow from the engine and
thus drives the compressor. The compressor
increases the pressure in the engine intake tract
so that a greater mass of air enters the cylinder
during the intake stroke.
The turbine housing of the TC is integrated into the
exhaust manifold. This construction offers
thermodynamic advantages compared with the
usual construction, the maximum exhaust
temperature is up to 1050°C.
The maximum boost pressure is 0.65 bar.
The exhaust manifold is secured to the exhaust
side of the cylinder head with 12 self-locking nuts.
The exhaust manifold gasket is a multi-layer steel
gasket and cannot be reused. In order to
compensate for the thermal expansion of the
exhaust manifold, the flange of the TC is provided
with two grooves.
The TC and the exhaust manifold are joined by a
hose clip. The hose clip must not be loosened or
removed. The TC and the exhaust manifold are
not available as separate replacement parts,
exchange is only possible as a complete unit.
The turbocharger heat shield is secured to the
exhaust manifold by four bolts. Two of the bolts
have spring washers underneath their heads.
During removal, make a note of the installation
location of the spring washers to refer to during
installation.
The recirculated air valve is built into the TC
housing and cannot be changed.
The Ford diagnostic unit can test the operation of
the wastegate control valve using actuator
diagnosis.
The boost pressure regulator is set in the factory.
Adjustments to the boost pressure regulator must never be attempted. A red colored seal is applied
to the adjustment nut of the operating rod, in order
to monitor the factory setting of the boost pressure.
The bearings of the TC are lubricated with engine
oil. The engine oil passes from the cylinder block
through the oil supply pipe to the TC. The oil is
returned to the oil pan through the oil return pipe,
The TC is cooled by the engine coolant circuit.
When installing hoses and lines, make certain that
their ends are free of oil residues and dirt.
G1032425en2008.50 Kuga8/2011
303-04B-
4
Fuel Charging and Controls - Turbocharger
—
2.5L Duratec (147kW/200PS) - VI5
303-04B- 4
DESCRIPTION AND OPERATION
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Description
Item
PWM (pulse width modulation) signal
Comments:from PCM (powertrain control module)
5
Atmospheric pressure
6
Turbocharger boost pressure.
7
from air filter
8
Intake air
9Description
Item
Recirculated air valveRefertoComponentDescription:(page
7)
10
Vacuum line, recirculated air valve
11
to intake manifold
12
Throttle plate
13
Compressor
14
Turbine
15
System Operation
Turbocharger(s)
The TC consists of a turbine and a compressor.
The turbine is driven by the exhaust gas flow. A
common shaft drives the compressor and this then
compresses the intake air.
Turbocharger boost pressure control
E98942
1
2
3
4
Description
Item
Atmospheric pressure
1
Turbocharger boost pressure.
2
Wastegate control valve
3
Pilot pressure
4
The size of the TC is designed to produce a charge
effect even at medium engine speeds and lower
exhaust gas flows. This means that, when the engine speed is high and there is a large amount
of exhaust gas, either the boost pressure of the
TC will become too high or its speed will be too
high. The TC must therefore be regulated. The
best regulation is achieved by an electronically
controlled wastegate control valve. The wastegate
control valve controls the pressure on the
membrane in the boost pressure regulator.
The wastegate control valve is actuated by the
PCM with a PWM signal according to a map. The
boost pressure is applied to the wastegate control
valve via the pressure line from the compressor.
This pressure is passed to the boost pressure
regulator via the wastegate control valve. This
opens the bypass valve using a linkage. This
channels a portion of the exhaust gases around
the turbine. If the wastegate control valve is
actuated by the PCM, a bypass is opened in the
wastegate control valve. This causes the pressure
which can act on the membrane in the boost
pressure regulator to be reduced. This occurs until
the boost pressure has reached a set value. By
actuation with a PWM signal, it is also possible to
partially open or close the wastegate control valve.
This results in a constant boost pressure and
therefore high torque over a wide range of engine
speeds.
Because the PCM calculates the boost pressure
using the signal from the boost pressure sensor
and the IAT (intake air temperature) sensor, the
atmospheric pressure and the temperature are
automatically compensated for. Because of this
compensation, the engine power is not noticeably
affected by variations in atmospheric temperature
or pressure.
G1032426en2008.50 Kuga8/2011
303-04B-
6
Fuel Charging and Controls - Turbocharger
—
2.5L Duratec (147kW/200PS) - VI5
303-04B- 6
DESCRIPTION AND OPERATION
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