2007 FORD FIESTA body

Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-I 6V
-04A-1 (Sigma)lI.GL Duratec-I 6V (Sigma) 303-04A-1
SECTION 303-04A Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)/l.4L Duratec-1 6V (Sigma)/l .6L
Duratec-I 6V (Sigma)
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS
PAGE
SPECIFICATIONS
Specifications
........................................................................\
.............................................. 303-04A-2
DIAGNOSIS AND TESTING
Fuel Charging and Controls
........................................................................\
.................. 303-04A-3
Principles Of Operation ........................................................................\
............................ 303-04A-3
Inspection and Verification ........................................................................\
.......................... 303-04A-3
REMOVAL AND INSTALLATION
Throttle Body
........... ........................................................................\
............... (23 198 0) 303-04A-4
Fuel Charging Wiring Harness ....................................................................... \
(36 437 0) 303-04A-5
Fuel Injection Supply Manifold ......................................... .......................... (23 450 0) 303-04A-7
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)llI4L Duratec-1 6V
(Sigma)ll .6L Duratec-1 6V (Sigma)
SPECIFICATIONS
General Specifications
I Maximum idle increase for high generator load I I00 rpm I
Condition
Regulated fuel pressure
l~ir conditioning idle upspeed at low ambient temperatures I 100 rpm I
Specification
380 kpa (55 psi)
I Air conditioning idle upspeed at high ambient temperatures I 150 rpm I
I Power steering idle speed upspeed I 50 rpm I
Toraue S~ecifications
Description Nm I b-ft Ib-in
I Throttle body retaining bolts I 10 1 - I 89 I
I Fuel pressure regulator retaining bolts I 10 I - I 89 I
I Fuel injection supply manifold retaining bolts I 15 I 11 I - I
2006.0 Fiesta 1212006 GI 46265en
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-1 6V
303-04A-3 (Sigma)ll .6L Duratec-1 6V (Sigma) 303-04A-3 - -
DIAGNOSIS AND TESTING
Fuel Charging and Controls
Principles Of Operation
REFER to: Acceleration Control (31 0-02A,
Diagnosis and Testing).
lnspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of mechanical
or electrical damage.
Visual Inspection Chart
I Mechanical I Electrical I
- Fuel leak(s)
- Blocked or contamin-
ated fuel filter
- Fuel rail
- Vacuum line(s)
- Throttle body
- Wiring harness
- Electrical
connector(s)
- Fuel injector(s)
- Throttle body
I
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 WDS.
2006.0 Fiesta 1212006 G28679en
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)ll.4L Duratec-I 6V
303-04A-4 (Sigma)ll.GL Duratec-1 6V (Sigma) 303-04A-4
REMOVAL AND INSTALLATION
Throttle Body(23 198 0)
Removal 2. N0TE:Do not press the accelerator pedal
during the initialization period as this will
1. Disconnect the air cleaner outlet pipe from
prevent the complete initialization of the
the throttle body. throttle body.
2. Remove the throttle body retaining bolts. Turn
the ignition key to position
II and wait
for one minute to
initialize the throttle body.
3. Turn the ignition key to the OFF position.
3. Disconnect the throttle body electrical
connector and remove the throttle body.
I nin
1. To install, reverse the removal procedure.
2006.0 Fiesta 1212006 GI 46266en
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Fuel Charging and Controls - 1.25L
Duratec-1 6V (Sigma)llI4L Duratec-1 6V
(Sigma)llI6L Duratec-1 6V (Sigma)
REMOVAL AND INSTALLATION
Fuel Charging Wiring Harness(36 437 0)
Removal
1. Remove the air cleaner. For additional
5. N0TE:lt is necessary to lift the red locking
tab before the electrical connector can be
disconnected.
information, refer to Section
303-12 [Intake the throttle body electrical Air Distribution and Filtering].
connector.
2. Disconnect the spark plug wires from the
ignition coil.
6. Disconnect the fuel charging wiring harness
electrical connector.
3. Disconnect the engine coolant temperature
(ECT) sensor electrical connector.
(
7. Remove the positive crankcase ventilation
(PCV) hose.
4. Disconnect the camshaft position (CMP)
sensor electrical connector.
2006.0 Fiesta 1212006 GI 89082en
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Fuel Charging and Controls - 2.OL
Duratec-HE (M14)
I SECTION 303-04B Fuel Charging and Controls - 2.OL
Duratec-HE (M14)
VEHICLE APPLICATION:2006.0 Fiesta
CONTENTS PAGE
SPECIFICATIONS
........................................................................\
............................................ Specifications.. 303-04B-2
DESCRIPTION AND OPERATION
Fuel Charging and Controls ........................................................................\
.................... 303-048-3
DIAGNOSIS AND TESTING
Fuel Charging and Controls ........................................................................\
.................... 303-04B-5
Principles of Operation
........................................................................\
........................... 303-04B-5
Inspection and Verification
........................................................................\
.......................... 303-048-8
Symptom Chart ........................................................................\
...................................... 303-04B-9
REMOVAL AND INSTALLATION /
(< Throttle Body 303-048-24 ........................................................................\
..............................................
Fuel Injectors ........................................................................\
.......................... (23 455 0) 303-048-26
Fuel Rail ........................................................................\
...................................................... 303-04B-27
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Fuel Charging and Controls - 2.OL
303-04B-4 Duratec-HE (M14) 303-04B-4
DESCRIPTION AND OPERATION
fuel injector to fuel injection supply manifold and
The fuel injectors are activated sequentially by the
the intake manifold is achieved by means of upper
powertrain control module (PCM) which modifies
and lower O-ring seals.
the fuel quantity by adjusting fuel injector opening
times according to the engine operating conditions.
Throttle Body The throttle body also gives inputs back to the
Item Description The signal from the PCM is used to control a DC
The throttle butterfly position is controlled by a
signal from the PCM which receives an input from
the accelerator pedal position sensor. The system
is fully electronic and does not use any cables.
I
PCM. This information allows the PCM to
compensate for factors such as carbon build up
within the throttle body and throttle body wear. The
throttle body also provides information to the PCM
to enable the flagging of a DTC.
Throttle
body
2006.0 Fiesta 1212006 G385113en
motor within the throttle body which is connected
to the throttle butterfly through gears.
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Fuel Charging and Controls - 2.OL
303-04B-6 Duratec-HE (M14) 303-04B-6
DIAGNOSIS AND TESTING
1 6 1 Heated Oxygen sensor (H02s) I
Item Description Fuel supply
1 7 1 Intake manifold I
5
Fuel injectors
Throttle body
The fuel supply for all petrol fueled variants is
equipped with a return-less fuel system. This
means that the fuel delivery pressure at the fuel
injectors, is monitored and controlled by the fuel
tank module. This control is achived by switching
the fuel pump on and off.
The fuel pump module for both the Ethanol E85
TO maintain the same or similar power output to variant vehicle and the unleaded fueled vehicle are
that of the unleaded fuel vehicle, the fuel injectors
very similar, visual^ the only difference is the fuel
have been replaced with high flow fuel injectors. pump electrical connections which on the Ethanol
E85 variant is sealed. This is not the only
differance, both fuel pump modules have different
(
Fuel composition monitoring fuel level sensor resistor card values.
The quantity of Ethanol E85 in relation to the
quantity of unleaded fuel contained in the fuel tank
at any one time is not monitored at the fuel tank.
The Ethanol percentage volume can only decrease
from its maximum 85% (pure Ethanol
E85), to zero
(1 00% unleaded fuel).
The fuel charging system compensates for the
changes in fuel composition using the signal
received by the power train control module (PCM)
from the
H02s. The PCM adapts the fueling and
ignition calibrations to suit the current fuel tank
content composition.
Cold start
To overcome the problems relating to cold start
inherent with Ethanol E85 vehicles (temperatures
down to -29 degrees centigrade), a block heater
has been installed into the engine coolant system.
The block heater is located to the rear of the engine
under the exhaust manifold. The block heater is
fitted with a dedicated harness which terminates at an external plug connector fitted into the radiator
grill.
2006.0 Fiesta 1212006
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