2011 FORD KUGA EGR

Vehicles with ESP are equipped with an
opto-electronic steering wheel rotation sensor as
an integral part of the clockspring.
The following must be taken into account when
removing/installing or replacing the opto-electronic
steering wheel rotation sensor:
• If installing a new clockspring, remove theclockspring locking screw.
ESP switch
E99006
Stability assist can be deactivated via the menu in
the instrument cluster.
G1001303en2008.50 Kuga8/2011
206-09B- 6
Anti-Lock Control - Stability Assist
206-09B- 6
DESCRIPTION AND OPERATION
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HCU to check for sudden actuation of the brakes.
With the brake pedal pressed, the ABS module
triggers emergency braking if the rate of increase
of hydraulic pressure exceeds the predetermined
limit.
If the brake pedal is pressed so hard that the ABS
becomes active on the front wheels then the ABS
control unit increases the pressure to the rear
wheel brakes up to the ABS intervention threshold.
EBA operation continues until the driver releases
the brake pedal sufficiently for the hydraulic
pressure in the HCU to drop below a threshold
value stored in the ABS module.
Trailer stability control:If the vehicle is ordered
with a trailer coupling then the Trailer Stability
Control function is integrated in the ESP. The ESP
detects snaking when driving with a trailer and
reduces the speed of the vehicle and trailer through
adapted braking and, if necessary, by also reducing
the engine output until the snaking movement of
the trailer is corrected.
Roll-over protection: The ESP dynamically
determines the tipping tendency of the vehicle and
works in conjunction with the EBA system to
prevent the vehicle from tipping over during
dynamic maneuvers like lane changing or while
negotiating bends.
Emergency brake light: The emergency brake
light automatically switches on the hazard flasher
system to warn drivers of other vehicles that
emergency braking is being initiated. Based on a
defined delay value, the ABS/ESP module sends
a signal to the generic electronic module (GEM)
via the CAN data bus. The GEM activates the
hazard flasher system, that then flashes 7 times.
Prerequisites for activation of the emergency brake
light are:
• The speed is higher than 50 km/h.
• The brake pedal is being actuated.
• The deceleration is greater than 9 m/s².
To prevent activation on snow or ice, for example,
the following prerequisites must be met:
• The speed is higher than 50 km/h.
• The brake pedal is being actuated.
• ABS regulation takes place.
• The deceleration is greater than 6 m/s².
Tire pressure monitoring system: The tire
pressure monitoring system used in the Kuga is
able to detect loss of air in a tire at an early stage
and warn the driver. Because it can only compare
the behaviour of the tyres with each other, it is not possible to draw conclusions about the absolute
tyre pressure. It is also not possible to monitor the
spare tyre pressure. In order for the system to
operate correctly, the tyre pressures must be
regularly checked and corrected and the system
subsequently initialised (see below).
The tire pressure monitoring system used here,
depending on the equipment level, is built into the
anti-lock braking system (ABS) as an extra function
and therefore does not have its own sensors.
The ABS module measures the loss of pressure
in the tyres by calculation using the wheel speed
sensors of the ABS system. If a tyre loses
pressure, its diameter decreases and the speed of
the wheel therefore increases. If the ABS module
detects such a loss in pressure, it sends a signal
to the instrument cluster via the CAN bus and a
warning message is displayed in the message
centre. The warning threshold depends among
other things on the dimension of the tyres being
used, the vehicle operating conditions and the
status at the last initialisation. Since neither the
absolute tyre pressure nor the position of the tyre
is known, the pressure of all the tyres must be
checked and the system re-initialised after a tyre
pressure warning. If necessary, the cause of the
loss of pressure must be investigated.
Regular tyre pressure checks are still necessary.
The system must be initialised after a tyre is
changed, winter or summer tyres fitted, the
pressures corrected or adjusted to suit the vehicle
load. This can be done by the driver using the
driver information system. For further information,
see: Owner’s Manual.
Component Description
Opto-electronic steering wheel rotation
sensor
E80158
G1001304en2008.50 Kuga8/2011
206-09B-
11
Anti-Lock Control - Stability Assist
206-09B- 11
DESCRIPTION AND OPERATION
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ESP switch
E99006
Stability assist can be deactivated via the menu in
the instrument cluster. The stability assist functions
are deactivated when the Set switch is actuated.
The ABS control module makes the stability assist
functions available once more when the Set switch
is actuated again. The stability assist function is
automatically reactivated when the ignition is
switched on.
The electronic EBA is a constant function and will
remain active even if the ESP has been switched
off.
Combined yaw rate sensor and lateral
acceleration sensor / longitudinal
acceleration sensor
E96822
The heart of the combined yaw rate sensor and
lateral acceleration sensor/longitudinal acceleration
sensor is a small, double-sided tuning fork made
of a piezo crystal (A). The exciter side of this tuning
fork is set to a resonance of 11 kHz with the aid of
an alternating current. The measuring side of the
tuning fork features a resonance frequency of 11.33
kHz and therefore does not vibrate (B). Since,
under influence of an external accelerating force,
a vibrating mass reacts slower than a comparable
mass that is not vibrating, the tuning fork twists
within itself with rotational movement being
imparted on the sensor (C). This rotation results
in a change in the charge distribution in the Piezo
element, which is subsequently picked up and
converted into an electronic signal by electronics
integrated into the sensor. This electronic signal is
then sent to the ESP module. The ESP module
evaluates these data and takes into account the
other input data (vehicle speed, wheel speed)
before deciding whether the ESP function is
required.
G1001304en2008.50 Kuga8/2011
206-09B-13
Anti-Lock Control - Stability Assist
206-09B- 13
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SECTION 211-02 Power Steering
VEHICLE APPLICATION:2008.50 Kuga
PA G E
CONTENTS
DESCRIPTION AND OPERATION
211-02-2
Power Steering (Component Location) ........................................................................\
......
211-02-3
Power Steering (Overview) ........................................................................\
.........................
211-02-3
Power Steering ........................................................................\
...........................................
211-02-4
Steering gear ........................................................................\
..............................................
211-02-5
Electro-hydraulic power steering pump ........................................................................\
......
211-02-6
Pressure and return lines ........................................................................\
...........................
211-02-7
Power Steering (System Operation and Component Description) .....................................
211-02-7
System Diagram ........................................................................\
.........................................
211-02-8
System Operation ........................................................................\
.......................................
211-02-8
Electronic principle of operation ........................................................................\
..............
211-02-9
Hydraulic principle of operation ........................................................................\
..............
211-02-9
Component Description ........................................................................\
..............................
211-02-9
Electro-hydraulic power steering pump ........................................................................\
..
211-02-10
Integrated steering angle sensor - vehicles built up to 09/2009 .....................................
211-02-11
Brushless DC motor with integral power steering module..............................................
REMOVAL AND INSTALLATION
211-02-13
(13 443 0)
Power Steering Pressure Line and Return Line Assembly — 2.5L Duratec
(147kW/200PS) - VI5 ........................................................................\
............
211-02-18
(13 434 0)
Power Steering Pump — 2.5L Duratec (147kW/200PS) - VI5 .......................
211-02-21
(13 440 0;
13 443 0)
Power Steering Pump to Steering Gear Pressure Line — 2.5L Duratec
(147kW/200PS) - VI5 ........................................................................\
............
211-02-25
(13 116 0)
Steering Gear ........................................................................\
.........................
211-02-36
(13 439 0)
Steering Gear to Power Steering Fluid Reservoir Return Line — 2.5L Duratec
(147kW/200PS) - VI5 ........................................................................\
............
211-02-1
Power Steering
211-02- 1
.
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Power Steering – Component Location
E96448
1
Description
Item
Integrated steering angle sensor - vehicles
built up to 09/2009
1
G1001311en2008.50 Kuga8/2011
211-02-
2
Power Steering
211-02- 2
DESCRIPTION AND OPERATION
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Description
Item
Electro-hydraulic power steering pump
with integrated power steering moduleRefer to Component Description:
Electro-hydraulic power steering pump
(page5)
1
Ignition switch
2
Generic electronic module (GEM)
3
Data link connector (DLC)
4
Powertrain Control Module (PCM)
5
ABS module or ESP module
6Description
Item
Steering gear
7
Integrated steering angle sensor - vehicles
built up to 09/2009RefertoComponentDescription:(page
10)
8
High pressure pipe
9
Fluid Return Line
10
Battery junction box (BJB)
11
Battery
12
System Operation
Electronic principle of operation
The power steering module requires the following
information in order to ensure precise steering
behavior in all driving situations:
• Steering wheel position
• Rate of turn of the steering wheel
• Vehicle speed
• Information about the vehicle configuration
• Information about the ignition switch position
• Instantaneous engine operating status
The required information is made available to the
power steering module via direct connections and
via the CAN bus (refer to the flow chart).
The steering wheel position and the rate of turn of
the steering wheel are transmitted to the power
steering module as PWM signals from the steering
angle sensor. The steering angle sensor receives
its voltage and ground supply from the power
steering module and operates inductively with an
input voltage of 5 V.
The vehicle speed is made available to the power
steering module as a CAN bus signal from the ABS
module or ESP module. The engine operating status is made available to
the power steering module as a CAN bus signal
from the PCM.
The power steering module obtains the vehicle
configuration information via the CAN bus from the
GEM. This information is required by the power
steering module in order to define the internal
characteristics of the power steering.
The power steering module obtains information
about the current ignition switch position via the
voltage input (terminal 15) of the ignition switch.
Whilst constantly monitoring the relevant input
signals the power steering module accesses stored
maps. With the aid of this information the pump
speed is matched to the current driving situation.
An electronic diagnosis of the electro-hydraulic
power steering can be performed with the aid of a
diagnostic tester via the DLC of the vehicle. For
additional information please refer to "Diagnosis
and Testing" in this section.
G1001270en2008.50 Kuga8/2011
211-02-
8
Power Steering
211-02- 8
DESCRIPTION AND OPERATION
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E96312
1
2
3
Description
Item
Reservoir
1
Hydraulic pump
2
Brushless DC motor with integral power
steering moduleRefertoComponentDescription:(page
11)
3
NOTE: The power steering pump must be filled
and vented as specified.
The electro-hydraulic power steering pump
comprises a brushless DC motor, the hydraulic
pump and the power steering fluid reservoir.
The hydraulic pump is a gear pump; a resonance
chamber incorporated into the pump body reduces
noise emissions.
The operating pressure is also regulated by means
of a pressure limiting valve which is integrated in
the pump housing. The pressure limiting valve
stabilizes the throughput to the steering gear to a
particular level independently of engine speed.
The pressure relief valve will operate if the
discharge from the pump is restricted, for example, steering held on full lock. If the output from the
pump is blocked, all output is recirculated through
the pump. As no fresh fluid from the reservoir is
drawn into the pump in the process, the
temperature of the power steering fluid in the pump
quickly increases. Consequently, periods of holding
the steering wheel at full lock should be kept to a
minimum to prevent overheating of the pump and
the power steering fluid within it.
The pressure limiting valve limits the pressure on
the outlet side to 120 bar.
Integrated steering angle sensor - vehicles
built up to 09/2009
G1001270en2008.50 Kuga8/2011
211-02-
10
Power Steering
211-02- 10
DESCRIPTION AND OPERATION
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E96430
The steering angle sensor is a inductive sensor.
The steering angle sensor monitors the steering
wheel position and the rate of turn of the steering
wheel. This information is sent to the power
steering module.
On vehicles built from 09/2009the power steering
module uses the information from the steering angle sensor at the steering column. The required
information is made available to the power steering
module via the CAN bus.
Brushless DC motor with integral power
steering module
G1001270en2008.50 Kuga8/2011
211-02-
11
Power Steering
211-02- 11
DESCRIPTION AND OPERATION
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