Fuel Charging and Controls - 2.OL
Duratec-HE (M14)
REMOVAL AND INSTALLATION
Description Item Description
See Removal Detail
See Removal Detail
Fuel charging wiring harness retaining clip
Item Description I . WARNINGS:
or near any fuel related components.
Highly flammable vapors are always
present and may ignite. Failure to follow
these instructions may result in personal
7
8
I I iniurv.
Fuel rail retaining bolts
Fuel rail A Do not smoke or carry lighted tobacco or
open flame of any type when working on
11
Removal Details
1 12 1 Fuel injectors
Item 1 Fuel charging wiring harness retaining
clip
Fuel injector O-ring seals
See Installation Detail
always observe fuel handling precautions.
1. Detach the fuel charging wiring harness
retaining clip from the intake manifold.
I w
A This procedure involves fuel handling. Be
prepared for fuel spillage at all times and
Failure to follow these instructions may
5. To install, reverse the removal procedure.
result in personal injury.
2006.0 Fiesta 1212006 G421322en
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303-1 34 Evaporative Emissions 303-1 3-4
REMOVAL AND INSTALLATION
Evaporative Emission Canister - 1.3L Duratec-8V (Rocam)/l.25L
Duratec-1 6V (Sigma)/l.4L Duratec-I 6V (Sigma)/l .6L
Duratec-1
6V (Sigma)(29 250 0)
c
General Equipment 3. Detach the exhaust system from the center
Transmission jack exhaust hanger insulator.
Removal
WARNINGS:
A Do not smoke or carry lighted tobacco or
open flame of any type when working on
or near fuel related components. Highly
flammable vapors are always present and
may ignite. Failure to follow these
instructions may result in personal injury.
A This procedure involves fuel handling. Be
prepared for fuel spillage at all times and
always observe fuel handling precautions.
4. N0TE:When detaching the exhaust system
Failure to follow these instructions may
allow the system to be supported by the rear
result in personal injury.
suspension assembly.
I. Raise and support the vehicle. For additional
Detach the exhaust system from the rear
information, refer to Section
100-02 [Jacking
exhaust hanger insulator.
and Lifting].
2. Remove the floor panel crossmember.
5. Remove the exhaust system heat shield.
-
2006.0 Fiesta 1212006 G210050en
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303-1 3-6 Evaporative Emissions 303-1 3-6
REMOVAL AND INSTALLATION
12. Remove the evaporative emissions canister
from the fuel tank.
Installation
1. WARNINGS:
ADO not smoke or carry lighted tobacco or
open flame of any type when working on or
near fuel related components. Highly
flammable vapors are always present and
may ignite. Failure to follow these
instructions may result in personal injury.
A~his procedure involves fuel handling.
Be prepared for fuel spillage at all times and
always observe fuel handling precautions.
Failure to follow these instructions may
result in personal injury.
N0TE:When installing the fuel tank make sure the
fuel lines do not get kinked or trapped.
To install, reverse the removal procedure.
2006.0 Fiesta 1212006 G210050en
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303-1 4-1 5 Electronic Engine Controls 303-1 4-1 5
DIAGNOSIS AND TESTING
Monitors
The purpose of the monitors is to continuously
check the operation of the emission related sensors
and actuators. It then establishes if they are
operating within specified tolerances. All monitors
carry out their functions in such a way as to be
unnoticeable by the driver of the vehicle. Each one
is carried out under specific conditions of load,
speed and engine temperature. The Comprehensive Component Monitor, Combustion
Misfire Monitor and
AirIFuel Ratio Monitor operate
continuously. The remaining monitors are only
invoked under certain operating conditions. On
diesel variants, all of the monitors operate under
normal driving conditions: There are no monitors
which intervene and cause special operating
modes to enable the monitors to work. Some diesel
monitors are non-continuous. This means that in
a drive cycle, monitoring is done as and when
suitable driving conditions exist and potential faults
are accumulated and compared with acceptance
criteria. Examples of this type are the turbocharger
boost pressure and exhaust gas recirculation
(EGR) monitors on vehicles with common rail fuel
injection.
( Comprehensive Component Monitor (CCM)
When the CCM detects a component operating out
of tolerance, it sets a Diagnostic Trouble Code
(DTC), which is stored in the EEPROM. If the same
concern is confirmed during the next trip the MIL
will be switched on. The CCM monitors many
components, sub-systems and signals. The
following is a list of those that can effect emissions
depending on application:
Electronic Ignition (El) System.
Crankshaft Position (CKP) Sensor.
Ignition Coil.
Electronic Throttle Control Unit.
Camshaft Position (CMP) Sensor.
Air Conditioning
(AIC) Clutch.
Idle Air Control (IAC) Valve.
Mass Air Flow (MAF) Sensor.
Manifold Absolute Pressure (MAP) Sensor.
Intake Air Temperature (IAT) Sensor.
Engine Coolant Temperature (ECT) Sensor.
Cylinder Head Temperature (CHT) Sensor.
Heated Oxygen Sensor
(H02S).
Catalyst Monitor Sensor.
Charge Air Temperature Sensor.
Knock Sensor (KS).
Throttle Position (TP) Sensor.
Vehicle Speed Sensor (VSS).
Boost Pressure Sensor.
Cam-Crank Phasing Sensor.
EEPROM.
High Pressure Fuel Injection Pump.
Exhaust Gas Recirculation (EGR) Valve Monitor.
Fuel Injectors.
Turbocharger.
Combustion Noise Monitor.
Barometric Pressure (BARO) Sensor.
Combustion Misfire Monitor (All except vehicles
with diesel engine)
The combustion misfire monitor operates independently of the others, and can detect misfires
caused by the ignition system, fuel system or
mechanical engine components. As each cylinder
fires, a characteristic crankshaft acceleration is
produced. The monitor detects irregularities in the
acceleration pattern using the crankshaft position (CKP) sensor, thus detecting the misfire. It can
also detect which cylinder has misfired.
Combustion misfires can be categorized as follows:
Type
A: These can cause catalytic converter
damage due to excessive internal temperatures.
If a certain number of misfires occur over a
pre-determined number of engine revolutions, the
MIL will be switched on to alert the driver of the
concern.
Type B: These can lead to an increase in emissions
to a point above the EOBD threshold. If the misfire
is detected during a second trip, over a,
pre-determined number of engine revolutions, the
MIL will be switched on. If the misfire does not
occur over the next three trips, the MIL will be
extinguished
AirIFuel Ratio (AFR) Monitor (All except vehicles
with diesel engine)
The H02S fitted before the catalytic converter
(upstream) measures the oxygen content of the
exhaust gas and the variations in it. This then
enables the PCM to adjust the opening times of
the fuel injectors to maintain the correct AFR. This
is known as Short Term Fuel Trim (STFT). If the
same variation is registered a pre-determined
number of times, a permanent correction factor is
applied. This is known as Long Term Fuel Trim
(LTFT), which is stored in the EEPROM. When the
correction factors exceed pre-determined limits a
DTC will be set in the EEPROM. If a concern is
2006.0 Fiesta 1212006 G384566en
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31 0-00-3 Fuel System - General Information 31 0-00-3
GENERAL PROCEDURES
/'
Fuel System Pressure Release(23 420 0)
i
Release
I. WARNINGS:
ADO not smoke or carry lighted tobacco or
open flame of any type when working on or
near any fuel related components. Highly
flammable vapors are always present and
may ignite. Failure to follow these
instructions may result in personal injury.
A~he fuel system remains pressurized for
a long time after the ignition is switched off.
The fuel pressure must be released before
attempting any repairs. Failure to follow this
instruction may result in personal injury.
Remove the fuel pump fuse.
2. Start the engine and allow to idle until the
engine stalls.
3. Crank the engine for approximately five
seconds to make sure the fuel injection
supply manifold pressure has been released.
,1 4. Install the fuel pump fuse.
2006.0 Fiesta 1212006 GI 81 91 en
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31 0-00-4 Fuel System - General Information 31 0-00-4
GENERAL PROCEDURES
Fuel Tank Draining(23 551 0)
General Eaui~ment
I Fuel tank draining equipment I
Draining
WARNINGS:
A Do not smoke or carry lighted tobacco or
open flame of any type when working on
or near any fuel related components.
Highly flammable vapors are always
present and may ignite. Failure to follow
these instructions may result in personal
injury.
A The fuel system remains pressurized for a
long time after the ignition is switched off.
The fuel pressure must be relieved before
attempting any repairs. Failure to follow
these instructions may result in personal
injury.
I. Disconnect the battery ground cable. For
additional information, refer to
Section
414-01 [Battery, Mounting and
Cables].
2. Remove the fuel tank filler cap.
3. Using fuel tank draining equipment, drain
the fuel from the fuel tank using a
12.5mm
nylon drain tube.
2006.0 Fiesta 1212006 G210056en
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31 0-00-5 Fuel System - General Information 31 0-00-5
GENERAL PROCEDURES
Quick Release Coupling
i 1 General Equipment 2. Disconnect the fuel line quick release
coupling.
Flat-bladed screwdriver
Disconnection
WARNINGS:
A Do not carry lighted tobacco or open flame
of any type when working on or near any
fuel related components. Highly flammable
vapors are always present and can ignite.
Failure to follow these instructions may
result in personal injury.
A This procedure involves fuel handling. Be
prepared for fuel spillage at all times and
always observe fuel handling precautions.
Failure to follow these instructions may
result in personal injury. 3.
Disconnect the fuel line quick release
coupling.
1. Pull the fuel line quick release coupling
CAUTI0N:Fuel injection equipment is locking tang.
manufactured to very precise tolerances 2. Push the clip through the fuel line quick
and fine clearances. It is therefore essential release coupling to release the fuel line.
that absolute cleanliness is observed when I
i
working with these components. Always
install blanking plugs to any open orifices
or lines.
N0TE:Fuel supply line connectors are white or are
identified by a white band. Fuel return line
connectors are red or are identified by a red band.
1. Release the fuel system pressure.
For additional information, refer to: Fuel
System Pressure Release (31
0-00 Fuel
Svstem - General Information, General
2. Disconnect the fuel line quick release 4. Disconnect the fuel line quick release
coupling. coupling.
1. Press the fuel line quick release coupling 1. Press the fuel line quick release coupling
locking tangs. locking tangs.
2006.0 Fiesta 1212006 GI 81 92en
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31 0-00-7 Fuel System - General Information 31 0-00-7
GENERAL PROCEDURES
10. Using a suitable Flat-bladed screwdriver 2. Disconnect the fuel line from the fuel filter.
release the fuel line quick release coupling
( secondary locking tang.
Connect
11. Operate the fuel line quick release coupling WARNINGS:
primary locking tang.
Push the fuel line quick release coupling
primary locking tang into from the fuel line
quick release coupling.
12. Disconnect the fuel line from the fuel line
quick release coupling.
13. Disconnect the fuel line from the fuel filter.
1 . Press the collar into the connector body.
Do not carry lighted tobacco or open flame
of any type when working on or near any
fuel related components. Highly flammable
vapors are always present and can ignite.
Failure to follow these instructions may
result in personal injury.
A This procedure involves fuel handling. Be
prepared for fuel spillage at all times and
always observe fuel handling precautions.
Failure to follow these instructions may
result in personal injury.
A CAUTI0N:Fuel injection equipment is
manufactured to very precise tolerances
and fine clearances.
It is therefore essential
that absolute cleanliness is observed when
working with these components. Always
install blanking plugs to any open orifices
or lines.
N0TE:Fuel supply line connectors are white or are
identified by a white band. Fuel return line
connectors are red or are identified by a red band.
1. Push the connector on to the fuel filter.
2006.0 Fiesta 1212006 GI 81 92en
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