2007 FORD FIESTA brakes

206-06-8 Hydraulic Brake Actuation 206-06-8
REMOVAL AND INSTALLATION
Brake Master Cylinder - RHD(12 343 0)
Removal 4. Tighten the bleed nipple. \,
All vehicles
CAUTI0N:lf brake fluid is spilt on the
paintwork, the affected area must be
immediately washed down with cold water.
I. Disconnect the brake vacuum pipe from the
brake booster.
I. Unclip the brake vacuum pipe.
2. Disconnect the brake vacuum pipe.
6. Install the brake fluid reservoir cap.
7m &AUTION:C~~ the brake tubes to prevent
fluid loss or dirt ingress.
Disconnect the brake tubes from the brake
master cylinder.
2. Disconnect the battery ground cable. For
additional information, refer to
Section
414-01 [Battery, Mounting and
Cables].
3. Remove the windshield wiper motor
assembly. For additional information, refer
to Section
501 -1 6 [Wipers and Washers].
4m &AUTION:T~~ brake fluid reservoir cap
must not become contaminated.
Vehicles with anti-lock brakes
Remove the brake fluid reservoir cap.
5. N0TE:lt will be necessary to carry out this 8m &AUTION:C~~ the brake tubes to prevent
fluid loss or dirt ingress.
step on both sides in order to completely
drain the brake fluid reservoir.
Drain the brake fluid reservoir.
1. Connect one end of a suitable piece of clear
plastic pipe to the bleed nipple and place the
other end into a suitable container.
2. Loosen the bleed nipple.
3. Depress the brake pedal until all the fluid is
drained from the brake fluid reservoir.
2006.0 Fiesta 1212006 ~89191 en
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206-0713 Power Brake Actuation 206-0713
DESCRIPTION AND OPERATION
Brake Booster
Emergency brake assistant (EBA) EBA operates purely mechanically, and is
completely integral with the brakeservo.
As ABS braking systems have become widespread,
it has emerged that because of incorrect use of the
Brake servo units with and without EBA are
brakes, many drivers are losing the safety benefit externally identical. For identification purposes,
which ABS
~rovides. brake servo units with EBA carry a white sticker I showing a large letter "A. Drivers are applying the brakes too timidly.
Because of this, the Anti-lock Braking System The tandem master cylinder
is the same for
(ABS) does not engage, and the maximum braking
vehicles with or without
effect is not achieved.
The EBA recognises from the driver's manner of
braking that an emergency situation is occurring,
and automatically applies full braking power.
This occurs in a matter of milliseconds, which is
faster than the driver could do it.
Furthermore, it was observed that after the first
heavy application of the brake pedal, the driver
releases the pressure on the pedal too early.
The EBA ensures that the ABS effect still continues
when the pedal pressure would normally lie below
the ABS range of control. The system is available
j as an option depending on market and vehicle
variant.
Function
In normal braking situations, the brake servo with
EBA operates in the same way as a conventional
brake servo unit. This means that the driver can
always modulate the brakes.
If an activation threshold defined by a characteristic
curve is exceeded during braking, the EBA
operates.
Determination of the activation threshold is based
on the pedal movement parameters, which are a
function of the pressure on the brake pedal and
the speed of movement of the pedal.
Depending on driving manner, EBA results in a The characteristic curve
is separately defined for
reduction in braking distance of 15% for each vehicle model.
experienced drivers, to over
40% for average The mechanical EBA uses the fact that in a brake
drivers. servo unit, the valve piston moves ahead of the
Because EBA decelerates the vehicle up to the control housing
when a braking operation starts.
wheel locking limit, emergency brake assist is only Because of this, there is a relative travel distance used in vehicles with ABS.
between the control housing and the valve piston
which can vary depending on the force applied to
Components the brake pedal and the pedal speed.
The relative travel distance is small when the pedal
moves slowly with low force applied to it. The
relative travel distance is larger when the pedal
moves faster with higher force applied to it.
Item Description
-
2006.0 Fiesta 1212006 GI 63289en
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206-09A-3 Anti-Lock Control 206-09A-3
DESCRIPTION AND OPERATION
Anti-Lock Control
Overview
Function
The ABS is a closed loop control system in the
brake system which prevents the wheels from
1 4 1 Ignition lock I situations.
3
1 5 1 Stoplamp switch I
6 ABS warning lamp in the instrument
I 1 cluster
Wheel
speed sensors
In addition to the conventional brake system with
two diagonally split brake circuits, the ABS consists
of an ABS hydraulic unit with integrated control
unit, four wheel sensors and the ABS warning lamp
in the instrument cluster. locking up under
braking and therefore maintains
steerability and driving stability in extreme
Electronic brake force distribution is integrated in
the software of the ABS control unit', which
electronically regulates and optimises the pressure
applied to the wheel brakes on the front and rear
axles in accordance with the operating conditions.
ABS control unit
The ABS control unit continuously compares stored
physical deceleration values with those detected
by the wheel sensors. This allows the lock-up
tendency of each wheel to be detected separately.
If the ABS control unit detects that a wheel is
threatening to lock up, then the corresponding
hydraulic valves in the valve block are either closed
or opened.
The ABS control unit then also passes on the
vehicle speed signal obtained from the wheel sensors to the Powertrain Control Module (PCM).
2006.0 Fiesta 1212oo6 GI 63290en
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206-09A-20 Anti-Lock Control 206-0949-20
REMOVAL AND INSTALLATION
Rear Wheel Speed Sensor(l2 785 0)
Removal
All vehicles
I. Raise and support the vehicle. For additional
information, refer to: (100-02 Jacking and
Lifting)
Jacking (Description and Operation),
Lifting (Description and Operation).
Vehicles with rear drum brakes
2. Detach the wheel speed sensor from the
wheel spindle on both sides.
Vehicles with rear disc brakes
3. Detach the wheel speed sensor from the
wheel spindle on both sides.
4. Detach the wheel speed sensor wiring
harness from the wheel speed sensor wiring
harness support bracket on both sides.
All vehicles
5. Disconnect the wheel speed sensor electrical
connector.
6. Detach the wheel speed sensor support
bracket and wheel speed sensor wiring
harness from the beam axle.
Discard the retaining clips.
2006.0 Fiesta 1212006 GI 83775en
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206-09A-22 Anti-Lock Control 206-09A-22
REMOVAL AND INSTALLATION
Rear Wheel Speed Sensor Ring(l2 788 0)
Special Tool(s)
I I Installer, ABS Sensor Ring I
General Eaui~ment
I Soft faced hammer I
Removal
Remove and discard the wheel hub retaining \.
nut.
Vehicles with rear drum brakes
All vehicles
1. Remove the brake drum. 5. Remove and discard the wheel speed sensor
For additional information, refer to: Brake ring
(brake disc shown).
Drum
(206-02 Drum Brake, Removal and
Installation).
Vehicles with rear disc brakes
2. Remove the dust cap.
Installation
All vehicles
1. CAUTIONS:
AMake sure the wheel speed sensor ring 3. Remove the brake disc.
is not knocked, damaged and kept free from
For additional information, refer to: Brake metal
fragments.
Disc
(206-04 Rear Disc Brake, Removal and
Installation).
A~rotect the face of the wheel speed
sensor ring with a non-ferrous flat block to
4. Remove the wheel hub.
prevent damage.
AMake sure the wheel hub or brake drum
is adequately supported and do not allow
it
to rest on the wheel studs. f
AMake sure the wheel speed sensor ring ''- '
is pressed on slowly and squarely until fully
seated.
ADO not exceed a maximum load of 10 kN.
2006.0 Fiesta 1212006 GI 83776en
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Anti-Lock Control
REMOVAL AND INSTALLATION
Using the special tool, install a new wheel Using
a soft faced hammer and a wooden
/ speed sensor ring (brake disc shown). block,
install the dust cap.
Vehicles with rear disc brakes
2. CAUTIONS:
AAvoid any impact on the wheel speed
sensor ring.
n~ake sure the wheel speed sensor ring
is clean.
A~void any contact between the wheel
, speed sensor ring and a magnetic surface.
( , A~otate the hub assembly 10 times
counterclockwise when tightening the wheel
hub retaining nut to prevent damage to the
wheel bearing.
Vehicles with rear drum brakes
5. CAUTIONS:
AAvoid any impact on the wheel speed
sensor ring.
AMake sure the wheel speed sensor ring
is clean.
AAvoid any contact between the wheel
speed sensor ring and a magnetic surface.
Install the brake drum.
For additional information, refer to: Brake
Drum (206-02 Drum Brake, Removal and
Installation).
N0TE:lnstall a new wheel hub retaining nut.
Install the wheel hub.
3. Install the brake disc.
For additional information, refer to: Brake
Disc (206-04 Rear Disc Brake, Removal and
Installation).
4.
N0TE:lf the dust cap is damaged a new dust
cap must be installed.
2006.0 Fiesta 1212006 GI 83776en
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Fuel Charging and Controls - 2.OL
303-04B-13 Duratec-HE (M14) 303-04B-13
DIAGNOSIS AND TESTING
Possible Sources Action
,
Engine ignition.
Symptom
Engine stumbling
Engine lacks power
REFER to: Engine lgnition
(303-07B, Diagnosis and
Testing).
Fuel injectors.
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.
Low fuel system pressure.
EGR valve sticking open.
Check the fuel system pres-
sure.
REFER to: Fuel System Pres-
sure Check (31
0-OOA,
General Procedures).
Fuel rail fuel pressure sensor.
REFER to: Engine Emission
Control (303-08 Engine
Emission Control
- 2.OL
Duratec-HE (M14), Diagnosis
and Testing).
Carry out a full engine
diagnosis using the guided
diagnostic menu in WDS.
Engine ignition. REFER to: Engine lgnition
(303-07B, Diagnosis and
Testing).
Brakes binding.
I CHECK the braking system.
REFER to: Brake System (206-
1 00, Diagnosis and Testing).
Vehicle overloaded, or
excessive wind resistance (roof
racks, towing etc). ADVISE
the customer about
the effects of overloading the
vehicle and wind resistance on
the fuel consumption.
Air cleaner element blocked.
REFER to: Fuel System Pres-
sure Check (31
0-OOA,
General Procedures).
INSTALL a new air cleaner
element as necessary.
Low fuel system pressure.
r
Check the fuel system pres-
sure.
2006.0 Fiesta 1212006 GI 65371 en
Kinked or restricted fuel lines. INSPECT the fuel lines.
INSTALL new components as
necessary. TEST the system
for normal operation.
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Fuel Charging and Controls - 2.OL
303-04B-22 Duratec-HE (M14) 303-04B-22
DIAGNOSIS AND TESTING
Symptom
Engine knock during accelera-
tion Possible
Sources Action
CKP sensor. Carry out a full engine
diagnosis using the guided
diagnostic menu in WDS.
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.
I . Incorrect valve timing. I CHECK the valve timing. I
Excessive carbon build up. REMOVE the cylinder head.
INSPECT the cylinder head
and pistons for signs carbon
build up.
REFER to: Cylinder Head (303-
01 C, In-vehicle Repair).
Worn or damaged oil pump.
Worn or damaged timing chain
or sprocket.
Major mechanical engine
failure. INSPECT
the engine compon- I
ents.
KS.
Fuel injectors. Carry out a full engine
diagnosis using the guided
diagnostic menu in WDS.
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.
Major mechanical engine
failure. REFER
to: Engine (303-01
Engine
- 2.OL Duratec-HE
(M14), Diagnosis and
Testing).
N0TE:Before proceeding with any
of the actions in relation to the
possible sources for excessive
fuel consumption, a fuel consumption test located in the
toolbox menu of WDS must be
performed.
Excessive fuel consumption Brakes binding. CHECK
the braking system.
REFER to: Brake System (206-
00, Diagnosis and Testing).
Vehicle overloaded, or
excessive wind resistance (roof
racks, towing etc).
ADVISE the customer about
the effects of overloading the
vehicle and wind resistance on
the fuel consumption.
2006.0 Fiesta 1212006 GI 65371 en
Air cleaner element blocked. INSTALL a new air cleaner .-
element. I
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