2007 FORD FIESTA Air con

206-0716 Power Brake Actuation 206-0716
DESCRIPTION AND OPERATION
Release of the brake assistant
Item Description
I I I ~ock sleeve I
1 3 IVacuum cylinder I
To release EBA, the brake pedal must be fully
released,
i.e. it must be returned to its rest position.
When this occurs, the control housing together with
the valve piston move back into the rest position.
The key is pressed against the stop on the vacuum
cylinder and by this the lock sleeve is slid back into
its rest position.
The balls can again be moved outward by the ball
sleeve, and the ball cage is again free to move
axially and the balls free to move radially.
Service
It is not possible to repair the EBA. A new brake
servo unit must be installed.
2006.0 Fiesta 12/2006 GI 63289en
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21 1-00-4 Steering System - General Information 21 1-00-4
DESCRIPTION AND OPERATION
Item Descri~tion
A
RHD with Duratec 16V engine and Air
1 I Conditioning (NC)
I B I LHD with Duratec 16V engine and NC I
I C I RHD with Duratec 16V engine without AM: I
I D I LHD with Duratec 16V engine without NC I
I E ( RHD with 1.4L Duratorq TDCi engine I
I F I LHD with 1.4L Duratorq TDCi engine I
I I I Steering gear I
1 2 1 Additional cooling loop I
Independent of the equipment level, all vehicles
have conventional power-assisted rack and pinion
steering with an additional cooling loop.
The steering gear is supplied with hydraulic fluid
by a hydraulic pump.
The hydraulic pump is driven by the accessory
drive belt and has a separate reservoir.
Vehicles with petrol engines have a Power Steering
Pressure (PSP) switch in the pressure line, which
opens as the power steering load increases, thus
signalling to the Powertrain Control Module (PCM)
that it should increase the idle speed.
- - -- - -
2006.0 Fiesta 1212006 G202090en
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211 -00-5 Steering System - General Information 211 -00-5
DIAGNOSIS AND TESTING
Steering System
/ Special Tool(s)
Alignment Pins, Subframe
205-524
Simulator, Driver and
passenger ~ir Bags and Side
Air Curtains 50
1 -073A
General Eaui~ment
I Worldwide Diagnostic System (WDS) I
Principles of Operation
The steering wheel rotational movement is
transferred to the steering gear through the steering
column shaft. The steering gear converts this
rotational movement, through the action of the rack
and pinion gear into lateral movement. This
movement in turn is transferred to the wheel
knuckles through the tie-rods and tie-rod ends.
Hydraulic fluid under pressure is supplied to the
steering gear by the power steering pump. As the
steering wheel is rotated, the hydraulic fluid is
allowed to pass through the steering gear valve to
one side of a double acting piston, dependent on
which direction the steering wheel is rotated. The
fluid moves the piston, which forms part of the
steering gear, giving power assistance to the effort
required to rotate the steering wheel.
Vehicles with petrol engines, due to the extra load
on the engine imposed by the power steering
pump, have a power steering pressure (PSP)
switch. The switch, which is normally closed, sends a signal
to the powertrain control module (PCM)
during low speed parking manoeuvres. The PCM
responds by maintaining the engine idle speed.
lnspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual lnspection Chart
I Mechanical I Electrical I
Tire pressure(s)
Accessory drive belt
Tie-rod ends
Tie-rod (s)
Steering gear housing
Front strut and
spring assemblies
Front suspension
lower arm ball joints
Front suspension
lower arm bushings
Pinch bolt on
steering column
shaft flexible coup-
ling Power
steering pres-
sure (PSP) switch
Wheels and tires
Power steering line
fluid leaks
Steering gear
bellows
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.
Symptom Chart
Symptom Possible Sources Action
Drift left or right
2006.0 Fiesta 1212006 Gl49906en
Vehicle attitude incorrect (front
or rear is high or low). CHECK for abnormal loading,
coil spring sag or non-standard
springs.
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21 1-00-8 Steering System - General Information 21 1-00-8
DIAGNOSIS AND TESTING
Symptom
Possible Sources Action
Damaged front suspension
lower arm(s).
CHECK and INSTALL new
suspension components as
necessary.
REFER to: Suspension System
(204-00 Suspension System
- General Information,
Diagnosis and Testing).
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
Steering effort is highllow Loose or worn accessory drive
belt.
CHECK the accessory drive
belt. REFER to: (303-05
Accessory Drive)
Power Steering Pump
Belt -
1.4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V
(Sigma), Vehicles With: Air
Conditioning
(Removal and
Installation),
Accessory Drive Belt - 1.3L
Du ratec-8V (Rocam)
(Removal and lnstallation),
Accessory Drive Belt - I .4L
Duratec-I 6V
(Sigma)ll.6L
Duratec-1 6V (Sigma),
Vehicles Without: Air Condi-
tioning
(Removal and Installa-
tion),
Accessory Drive
Belt - 1.4L
Duratorq-TDCi (DV) Diesel
(Removal and lnstallation),
Accessory Drive Belt - 2.OL
Duratec-H E (M 14) (Removal
and lnstallation).
2006.0 Fiesta 1212006 GI 49906en
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21 1 -00-9 Steering System - General Information 21 1-00-9
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
2006.0 Fiesta 1212006 GI 49906en
Power steering lines restriction.
Power steering fluid aeration. . CHECK the power steering
lines for damage, kinks or
restrictions. INSTALL new
components as necessary.
REFER to: (21 1-02 Power
Steering)
Power Steering Pump to
Steering Gear Pressure Line
- 1.25L Duratec-1 6V
(Sigma)/l.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V
(Sigma), Vehicles With: Air
Conditioning
(Removal and
Installation),
Power Steering Pump to
Steering Gear Pressure Line
- 1.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V
(Sigma), Vehicles Without:
Air Conditioning
(Removal
and lnstallation),
Power Steering Pump to
Steering Gear Pressure Line
- 1.3L Duratec-8V (Rocam)
(Removal and lnstallation),
Power Steering Pump to
Steering Gear Pressure Line
- 1.4L Duratorq-TDCi (DV)
Diesel (Removal and Installa-
tion),
Power Steering Pump to
Steering Gear Pressure Line
- 2.OL Duratec-HE (M14) RHD
(Removal and lnstallation),
Steering Gear to Power
Steering
Fluid Reservoir
Return Line
- 2.OL Duratec-
HE
(M14) RHD (Removal and
Installation),
Steering Gear to Fluid Cooler
Return Hose (Removal and
Installation).
. BLEED the power steering
system.
REFER to: Power Steering
System
Bleeding (21 1-00
Steering System
- General
Information, General Proced-
u res).
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211 -00-1 0 Steering System - General Information 211=00-10
DIAGNOSIS AND TESTING
Symptom
Possible Sources Action
Steering column. CHECK if the floor covering is
obstructing the steering gear
pinion.
CHECK the installation of the
steering gear
bulkhead floor
seal.
CARRY OUT the steering
column universal joint
component test. REFER to
Steering
Column Universal
Joint Component Test in this
procedure.
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
CARRY OUT the steering
linkage component test.
REFER to Steering Linkage
Component Test in this
procedure.
Worn power steering pump. INSTALL a new power steering
pump. REFER to: (21 1-02
Power Steering)
Power Steering Pump
- 1.3L
Du ratec-8V (Rocam)
(Removal and Installation),
Power Steering Pump - 1.25L
Duratec-1 6V (Sigma)/l.4L
Duratec-I 6V (Sigma)/l .6L
Duratec-1
6V (Sigma),
Vehicles With: Air Condi-
tioning
(Removal and lnstalla-
tion),
Power Steering Pump - 1.25L
Duratec-1 6V (Sigma)/l.4L
Duratec-1 6V (Sigma)/l .6L
Duratec-1
6V (Sigma),
Vehicles Without: Air Condi-
tioning
(Removal and lnstalla-
tion),
Power Steering Pump - 1.4L
Duratorq-TDCi (DV) Diesel
(Removal and Installation),
Power Steering Pump - 2.OL
Duratec-HE (M14) (Removal
and Installation).
2006.0 Fiesta 1212006 Gl49906en
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211 -00-12 Steering System - General Information 211-00-12
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
Power steering lines.
Steering gear bushings worn
or perished.
2006.0 Fiesta 12/2006 Gl49906en
CHECK the power steering lin
clamps are secure. REFER to:
(21 1-02 Power Steering)
Power Steering Pump to
Steering Gear Pressure Line
- 1.25L Duratec-1 6V
(Sigma)/l.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V
(Sigma), Vehicles With: Air
Conditioning
(Removal and
Installation),
Power Steering Pump to
Steering Gear Pressure Line
- 1.25L Duratec-1 6V
(Sigma)/l.4L Duratec-1 6V
(Sigma)/l .6L Duratec-1 6V
(Sigma), Vehicles Without:
Air Conditioning
(Removal
and Installation),
Power Steering Pump to
Steering Gear Pressure Line
- I .3L Duratec-8V (Rocam)
(Removal and Installation),
Power Steering Pump to
Steering Gear Pressure Line
- I .4L Duratorq-TDCi (DV)
Diesel (Removal and Installa-
tion),
Power Steering Pump to
Steering Gear Pressure Line
- 2.OL Duratec-HE (M14) RHD
(Removal and Installation),
Steering Gear to Power
Steering
Fluid Reservoir
Return Line
- 2.OL Duratec-
HE
(M14) RHD (Removal and
Installation),
Steering Gear to Fluid Cooler
Return Hose (Removal and
Installation).
CHECK the power steering
lines for clearance from the
vehicle body, front axle cross-
member and steering gear.
CHECK the steering gear
transfer
lines for clearance from
the steering gear.
CHECK and INSTALL new
components as necessary.
I REFER to: Steering Gear
Bushing (21 1-02 Power
Steering,
Removal and
Installation).
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21 1 -00-1 3 Steering System - General Information 211-00-13
DIAGNOSIS AND TESTING
Steering does not vary with
increased wheel rotation Possible Sources
Action
Loose steering gear retaining
bolts.
CHECK and INSTALL new
steering gear retaining bolts as
necessary.
REFER to: Specifications
(21 1 -
02 Power Steering, Specifica-
tions).
Worn power steering pump. INSTALL
a new power steering
pump. REFER to:
(21 1-02
Power Steering)
Power Steering Pump
- I .3L
Duratec-8V
(Rocam)
(Removal and lnstallation),
Power Steering Pump
- I .25L
Duratec-16V (Sigma)/l.4L
Duratec-1 6V (Sigma)/l .6L
Duratec-1
6V (Sigma),
Vehicles With: Air Condi-
tioning (Removal and Installa-
tion),
Power Steering Pump
- 1.25L
Duratec-I 6V (Sigma)/l.4L
Duratec-I 6V (Sigma)/l.GL
Duratec-I 6V (Sigma),
Vehicles Without: Air Condi-
tioning (Removal and Installa-
tion),
Power Steering Pump
- 1.4L
Duratorq-TDCi (DV) Diesel
(Removal and lnstallation),
Power Steering Pump
- 2.OL
Duratec-HE (M14) (Removal
and lnstallation).
Worn tie-rod. CARRY
OUT the tie-rod
component test. REFER to Tie-
Rod Component Test in this
procedure.
Worn tie-rod ends. INSTALL new
components as
necessary.
REFER to: Tie Rod End
(21 1-
03 Steering Linkage, Removal and Installation).
Worn front suspension bush-
ings. CHECK and INSTALL new
components as necessary.
REFER to: Suspension System
(204-00 Suspension System
- General Information,
Diagnosis and Testing).
2006.0 Fiesta 1212006 GI 49906en
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