start FORD KUGA 2011 1.G Service Manual

DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
2 Using a suitable vacuum gauge, check the
vacuum pressure.
• Is the vacuum pressure above 40.5 kPa (0.4 bar) with the brake booster non-operational?
zYe s
VERIFY the customer concern.
zNoINSTALL a new brake booster check valve
vacuum hose. TEST the system for normal
operation.
PINPOINT TEST C : BRAKE LOCK UP DURING LIGHT BRAKE PEDAL FORCE
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
C1: CHECK THE BRAKE BOOSTER
1 Check the brake booster push rod alignment
and pedal travel.
• Is the push rod and pedal travel OK?
zYe s TEST the brake pedal application. GO to
Pinpoint Test D.
zNo
INSTALL a new brake booster. TEST the
system for normal operation.
PINPOINT TEST D : EXCESSIVE BRAKE PEDAL EFFORT
DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
D1: CHECK BRAKE APPLICATION
1 With the engine off, apply and release the brake
pedal five times to deplete all vacuum from the
brake booster. Apply the brake pedal, hold with
light pressure. Start the engine.
• Does the brake pedal hold?
zYe s GO to D2 .
zNo
GO to D3 .
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Brake System - General Information
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DETAILS/RESULTS/ACTIONS
TEST CONDITIONS
F2: CHECK FOR BRAKE PEDAL BINDING
1 Check the brake pedal for free operation.
• Did the brake pedal operate freely?
zYe s INSTALL a new brake booster. TEST the
system for normal operation.
zNoINSTALL new brake pedal bushings. TEST
the system for normal operation.
Component Tests
Hydraulic Leak Check
NOTE: There is a common clutch and brake fluid
reservoir, therefore it is possible that a clutch leak
can lead to reduction in the reservoir level.
It is possible that all evidence of fluid leakage may
have washed off if the vehicle has been operated
in rain or snow, as brake fluid is water-soluble.
Refill the system, bleed then apply the brakes
several times. Examine the system to verify that
the reservoir fluid level is actually dropping. Locate
and repair the external leak. If the fluid level drops
and no external leak can be found, check for a
brake master cylinder bore end seal leak.
Brake System Check
Brake Pedal Reserve Check
Where a low brake pedal or the feel of a
bottomed-out condition exists, check for brake
pedal reserve.
1. Operate the engine at idle with the transaxle in the NEUTRAL position.
2. Apply the brake pedal lightly three or four times.
3. Allow 15 seconds for the vacuum to replenish the brake booster.
NOTE: This increased resistance may feel like
something has bottomed out.
4. Apply the brake pedal until it stops moving downward or an increased resistance to the
pedal travel occurs. 5. Hold the brake pedal in the applied position and
raise the engine speed to approximately 2000
rpm.
NOTE: The additional movement of the brake pedal
is the result of the increased engine manifold
vacuum which exerts more force on the brake
booster during engine rundown. This means that
additional stroke is available in the brake master
cylinder and the brake system is not bottoming out.
6. Release the accelerator pedal and observe that the brake pedal moves downward as the engine
returns to idle speed.
Brake Booster Functional Test
Inspect all hoses and connections. All unused
vacuum connectors should be capped. Hoses and
their connections should be correctly secured and
in good condition with no holes and no collapsed
areas. Inspect the check valve on the brake booster
for damage.
Brake Booster Operation Check
1. Check the hydraulic brake system for leaks orlow fluid.
2. With the transaxle in the NEUTRAL position, stop the engine and apply the parking brake.
Apply the brake pedal several times to exhaust
all the vacuum in the system.
3. With the engine turned off and the vacuum in the system exhausted, apply the brake pedal
and hold it down. Start the engine. If the vacuum
system is operating, the brake pedal will tend
to move downward under constant foot
pressure. If no motion is felt, the vacuum
booster system is not functioning.
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Brake System - General Information
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Description
Item
D.C. motor
9
Solenoid-operated pilot valve (2 off)
10
Solenoid-operated priming valve (2 off)
11
One way check valve
12
Low-pressure accumulator (2 off)
13
Solenoid-operated inlet valve (RH rear
brake)
14
Solenoid-operated inlet valve (LH front
brake)
15
Solenoid-operated outlet valve (LH front
brake)
16
Solenoid-operated outlet valve (RH rear
brake)
17Description
Item
Pressure sensor (5 off)
18
LH front brake (secondary circuit)
19
RH rear brake (secondary circuit)
20
LH rear brake (primary circuit)
21
RH front brake (primary circuit)
22
Solenoid-operated outlet valve (RH front
brake)
23
Solenoid-operated outlet valve (LH rear
brake)
24
Solenoid-operated inlet valve (LH rear
brake)
25
Solenoid-operated inlet valve (RH front
brake)
26
System Operation
The HCU features 3 operating modes:
Normal braking:
Initially, no current is supplied to
any of the solenoid-operated valves. Operating the
brake pedal produces a corresponding increase
or decrease of pressure in the brakes, through the
open pilot valves and inlet valves. If the ABS
module determines that EBD is necessary, it
energizes the inlet valves for both the rear brakes,
to isolate the brakes from any further increase in
hydraulic pressure.
ABS braking: If the ABS module determines that
ABS braking is necessary, it actuates the inlet and
outlet valves of the relevant brake and starts the
hydraulic return pump. The inlet valve closes to
isolate the brake from pressurized fluid; the outlet
valve opens to release pressure from the brake
into the accumulator and the return pump circuit.
The brake releases slightly and the wheel starts to turn again. The ABS control unit then operates the
inlet and outlet valves to regulate the hydraulic
pressure acting on the brake in order to maximize
braking effect without the wheel locking up. Control
of the valves for each wheel takes place
individually.
Active braking:
With active braking, pressure is
generated for other braking functions than the
normal and ABS braking systems, e.g. for the ESP
and TCS systems. For active braking, the ABS
module energizes the pilot valves and priming
valves, starts the return pump and energizes all of
the inlet valves. Brake fluid, drawn from the
reservoir through the master cylinder and priming
valve, is pressurized by the return pump and
supplied to the inlet valves. The ABS control unit
then actuates the inlet and outlet valves in order
to regulate the pressure for the individual brakes.
Some noise may be generated during active
braking.
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Anti-Lock Control - Stability Assist
206-09B- 8
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firmly grasp the road wheel and apply a rocking
motion checking for any free play in the steering
linkage.
E56375
10. Detach the steering gear boot from the steeringgear body and check for free play at the tie-rod
inner ball joint.
11. If there is free play at the tie-rod inner ball joint, install a new tie-rod.
REFER to: Tie Rod(211-03 Steering Linkage,
Removal and Installation).
12. Check the tie-rod end for free play. Install a new tie-rod end if necessary.
REFER to: Tie Rod End (211-03 Steering
Linkage, Removal and Installation).
Turning Effort Test
NOTE: Before carrying out this test, make sure
that the suspension components are serviceable.
NOTE: Before carrying out this test, make sure
that the steering column is serviceable.
NOTE: Before carrying out this test, make sure
that the toe adjustment and tire pressures are
correct.
1. Park the vehicle on a dry, even surface and apply the parking brake.
2. Remove the driver air bag module.
REFER to: Driver Air Bag Module (501-20
Supplemental Restraint System, Removal and
Installation).
3. Connect the air bag simulators to the sub-harnesses in place of the driver air bag
module at the top of the steering column.
4. Start the engine and turn the steering wheel from lock to lock several times until the power
steering fluid has reached normal operating
temperature. 5. Using a suitable torque wrench and socket,
check the steering wheel turning effort.
6. If the steering wheel turning effort is greater than the specification, install a new steering gear.
Steering Column Universal Joint
1.WARNING: Install a new steering column
to steering gear pinion retaining bolt. Failure
to follow this instruction may result in
personal injury.
Detach the steering column from the steering
gear pinion.• Discard the steering column to steering gear pinion retaining bolt.
TIE45919
1
2
2
2. Check for smooth movement of the steeringcolumn universal joint.
1. Hold the steering column universal joint yoke.
2. Articulate the free yoke in a figure of eight movement.
• If the movement is not smooth or resistance is felt, install a new steering column.
REFER to: Steering Column (211-04 Steering
Column, Removal and Installation).
TIE45918
3. Hold both of the steering column universal joint yokes and twist them clockwise and
counterclockwise.
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Steering System - General Information
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Power Steering System Flushing
MaterialsSpecification
Name
WSS-M2C204-A2 /
5U7J-M2C204-AA
Hydraulic Fluid DP-PS
1. WARNING: Be prepared to collect escaping fluids.
Using a blanking cap, cap the power steering
fluid reservoir.
E74090
2.Place the end of the steering gear return line
into a container.
3. Fill the power steering reservoir to the MAX
mark.
Material: Hydraulic Fluid DP-PS
(WSS-M2C204-A2 / 5U7J-M2C204-AA)
hydraulic fluid
4. Raise the vehicle until the road wheels are clear
of the floor. Support the vehicle.
Refer to: Lifting(100-02 Jacking and Lifting,
Description and Operation).
5. NOTE: This step requires the aid of another
technician.
1. Start the engine and slowly turn the steering from steering lock to steering lock until clean
power steering fluid comes out of the return
line.
2. With the aid of another technician, add the power steering fluid until the system is free
of contaminated power steering fluid.
Material: Hydraulic Fluid DP-PS(WSS-M2C204-A2 / 5U7J-M2C204-AA)
hydraulic fluid
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Power Steering System Filling
Special Tool(s)211-189
Adapter, Power Steering
Bleeding
13016
416-D001
Hand Vacuum
Pump/Pressure Pump
23036A
Materials
Specification
Name
WSS-M2C204-A2 /
5U7J-M2C204-AA
Hydraulic Fluid DP-PS
1. Fill the power steering fluid reservoir to the MAX
mark.
Material: Hydraulic Fluid DP-PS
(WSS-M2C204-A2 / 5U7J-M2C204-AA)
hydraulic fluid
2. Raise the vehicle until the road wheels are clear
of the floor. Support the vehicle.
Refer to: Lifting(100-02 Jacking and Lifting,
Description and Operation).
3. Slowly turn the steering wheel from lock to lock
and add power steering fluid until the power
steering fluid in the power steering fluid reservoir
stops dropping.
4. Start the engine and slowly turn the steering
wheel from lock to lock and add power steering
fluid until the power steering fluid in the power
steering fluid reservoir stops dropping. 5.
Switch the engine OFF and using the special
tools, create a vacuum of 62cm-Hg - 75cm-Hg
for 30 seconds.
Special Tool(s): 211-189, 416-D001
E73916
211-189
416-D001
6. Observe the vacuum gauge reading.
1.
2. If the vacuum decreases by more than
5cm-Hg in 5 minutes, the system should be
checked for leaks.
7. Remove the special tools. Fill the power steering
fluid reservoir to the MAX mark as necessary.
Material: Hydraulic Fluid DP-PS
(WSS-M2C204-A2 / 5U7J-M2C204-AA)
hydraulic fluid
8. Lower the vehicle.
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• Rubber bushes, electro-hydraulic power steeringpump
• Bracket #1
• Bracket #2
During removal and installation or renewal of
components of the electro-hydraulic power steering
pump, pay attention to the following:
• Before starting work to renew the electro-hydraulic power steering pump, the
program code of the electro-hydraulic power steering must be read out using the diagnostic
unit and noted.
• After the work to renew the electro-hydraulic power steering pump is completed, the
electro-hydraulic power steering must be
reconfigured using the diagnostic unit. For
further information, see: Module Configuration
(418-01 Module Configuration, General
Procedures).
• The electro-hydraulic power steering pump must be filled and vented as specified.
Pressure and return lines
E96417
1
2
3
4
Description
Item
power steering return hose
1
Power steering fluid pressure line
2Description
Item
Bracket #1
3
Bracket #2
4
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211-02- 6
Power Steering
211-02- 6
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Hydraulic principle of operation
E96442
3
4
5
7
8
6
1
2
Description
Item
Reservoir
1
Valve unit
2
Steering rack and pinion
3
Flow control/pressure relief - return
4
Flow control/pressure relief valve
5Description
Item
Outlet of the power steering pump
6
Electro-hydraulic power steering pumpRefertoComponentDescription:(page
5)
7
Low pressure suction line
8
When the engine is started, the electro-hydraulic
power steering pump sucks in power steering fluid
from the reservoir. The fluid flows through the pump
and is discharged under high pressure from the
outlet. The high-pressure line carries the power
steering fluid to the servo valve.
If no steering effort is applied, there is no resistance
to the circulation of power steering fluid and the
supply pressure from the pump is very low. Only
minimal pressure is applied by the servo valve to
the two sides of the piston in the working cylinder.
When the steering wheel is turned in either
direction, the return flow of fluid to the reservoir is restricted by the servo valve, causing the pressure
to increase on the supply side. The power steering
fluid is directed by the servo valve to the
corresponding side of the piston in the working
cylinder, providing the power assistance required
to reduce the steering effort. The power steering
fluid which is displaced towards the low-pressure
side of the cylinder flows through the servo valve
and the return line back to the reservoir.
Component Description
Electro-hydraulic power steering pump
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Power Steering
211-02- 9
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Action
Possible Sources
Symptom
• Check the cooling systemcomponents. Engine - 2.5L
Duratec-ST (VI5) -
REFER to: Engine Cooling
(303-03 Engine Cooling,
Diagnosis and Testing).
Engine - 2.0L Duratorq-TDCi
(DW) Diesel -
REFER to: Engine Cooling
(303-03 Engine Cooling,
Diagnosis and Testing).
• Cooling system components.
• Coolant consumption
• INSTALL a new oil cooler.
• Oil cooler.
• CHECK the cylinder headgasket for damage. CHECK the
cylinder head for distortion.
• Damaged gaskets or warped
mating faces.
• DETERMINE the damagedengine component(s) and
install new component(s) as
necessary.
• Cracks or fractures in engine
components surrounded by
coolant, such as cylinder liners
and cylinder head combustion
chamber.
• CHECK the battery and cables.REFER to: Charging System
(414-00 Charging System -
General Information,
Diagnosis and Testing).
• Battery or cables.
• Engine will not crank
• CHECK the starting system.Engine - 2.5L Duratec-ST (VI5)
-
REFER to: Starting System
(303-06 Starting System -
2.5L Duratec (147kW/200PS)
- VI5, Diagnosis and Testing).
Engine - 2.0L Duratorq-TDCi
(DW) Diesel -
• Starter motor or cables.
• CHECK the fuel level.
• Fuel tank is empty.
• Engine cranks but will not start
• Drain the water from the fuelsystem.
• Water in fuel (diesel engine
only).
• INSTALL a new fuel filter.Engine - 2.0L Duratorq-TDCi
(DW) Diesel -
• Fuel filter blocked.
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Engine System - General Information
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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.
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