Electrical FORD FIESTA 2007 Workshop Manual

31 0-01 -3 Fuel Tank and Lines 31 0-01 -3
DESCRIPTION AND OPERATION
Fuel Tank and Lines - 1.25L Duratec-1 6V (Sigma)/l.4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
Overview
Item Description In the
event of an accident, the fuel cut-off safety
11 Tank breather pipe I
1
2
3
1 5 1Tankfiller neck I
Fuel return line
1 6 I Activated charcoal canister I
switch interrupts the power supply so that no more
fuel can be supplied.
Non-return valve, Evaporative Emission
(EVAP) system
Fuel pump unit
1 7 1 Fuel filter I
It is located behind a cover on the right-hand
A-pillar in the footwell next to the central junction
box.
1 8 1 Fuel feed line I
The fuel tank holds 45 litres.
a The fuel pump unit is located in the fuel tank. It
consists of the fuel pump and the sender for the
fuel gauge.
The fuel pump is electrically controlled through the
The fuel tank must be removed before the fuel
fuel cut-off safety switch. pump
unit can be removed.
2006.0 Fiesta 1212006 G207055en
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31 0-01 -8 Fuel Tank and Lines 31 0-01 -8 -- -
REMOVAL AND INSTALLATION
All except vehicles with diesel engine All
except vehicles with diesel engine
12. Disconnect the fuel tank vent pipe from the 14.
Disconnect the fuel pump module electrical '
evaporative emission canister. For connector.
additional information, refer to
Section 310-00 [Fuel System
- General
Information].
All vehicles
13' ~CAUTION:W~~~ lowering the fuel tank,
make sure that excessive strain is not
placed on the fuel lines and electrical
connectors.
Partially lower the fuel tank.
Vehicles with diesel engine
15. Disconnect the fuel level sensor electrical
connector.
All vehicles
16. N0TE:Make note of the color of the fuel
lines to make sure they are connected in
exactly the same positions when installing.
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.
2006.0 Fiesta 1212006 GI 89084en
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310-01-15 Fuel Tank and Lines 31 0-01 -1 5
REMOVAL AND INSTALLATION
Fuel Level Resistor Card
Removal
All except vehicles with diesel engine Discard the fuel level resistor card
1. Remove the fuel pump and sender unit.
For additional information, refer to: Fuel Tank
(310-01 Fuel Tank and Lines, Removal and
Installation).
Vehicles with diesel engine
2. Remove the fuel level sensor.
For additional information, refer to: Fuel Tank
(310-01 Fuel Tank and Lines, Removal and
Installation).
All vehicles
3. N0TE:Diesel engine variants only have 2 Installation
wires. All vehicles
Disconnect the fuel level resistor card
electrical connectors.
ACAUTION:DO not touch the fuel level
I resistor card surface with tools or hands.
1 i Failure to follow this instruction may result
I in damage to the fuel level resistor card.
4. Using needle nose pliers, remove the fuel
level resistor card.
1. Press the locking tangs.
2. Remove the fuel level resistor card.
N0TE:Make sure that the locking tangs are in the
fully locked position.
N0TE:Make sure that the wiring harness is routed
around the fuel line,
in line with the original
installation.
Install the new fuel level resistor card into
the fuel pump and sender unit or the fuel
level sensor.
2. N0TE:t is not important which electrical
connector is connected to which fuel level
resistor card related pin in the top flange.
N0TE:Diesel engine variants only have 2 wires.
2006.0 Fiesta 1212006 G913201en
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31 0-01 -1 6 Fuel Tank and Lines 31 0-01 -1 6
REMOVAL AND INSTALLATION
Connect the fuel level resistor card electrical
connectors.
3. Make sure that the float rod and arm are able
to sweep their full ranges without contacting
or fouling on any wires.
Vehicles with diesel engine
4. N0TE:lnstall a new fuel level sensor gasket.
Install the fuel level sensor.
For additional information, refer to: Fuel Tank
(310-01 Fuel Tank and Lines, Removal and
InStallation).
All except vehicles with diesel engine
5. N0TE:lnstall a new fuel pump and sender
unit gasket.
Install the fuel pump and sender unit.
For additional information, refer to: Fuel Tank
(310-01 Fuel Tank and Lines, Removal and
Installation).
2006.0 Fiesta i21~006 G913201 en
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Acceleration Control - I .3L Duratec-8V
(Rocam)llI25L Duratec-I 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)ll .6L Duratec-1 6V (Sigma)
DIAGNOSIS AND TESTING
Acceleration Control
Principles of Operation
System Overview
Electronic Accelerator Control System Overview
Item Description
A Area "A- accelerator pedal
to powertrain
1 I control (PCM) module circuit Description
B Area "B"- electronic throttle body to PCM
I I circuit
I 1 I Accelerator pedal I
The system consists primarily of two circuits
connected to the PCM. The two circuits are the
accelerator pedal to PCM and the electronic throttle
body to PCM.
1 3 ~PCM I Accelerator Pedal
2006.0 Fiesta 1212006 G356253en
4
5
voltage corresponding to the pedal position.
16-way
inline electrical connector
Electronic throttle body The accelerator pedal contains two sensors
that
measure the movement of the pedal and output a
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Acceleration Control - 1.3L Duratec-8V
(Rocam)llI25L Duratec-1 6V (Sigma)llI4L
31 0-02A-4 Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma)
31 0-02A-4
DIAGNOSIS AND TESTING
Electronic Throttle Body
The electronic throttle body is similar to a
mechanical throttle body used on a cable
accelerator system. Instead of the cable moving
the throttle plate open and closed, it uses an
internal electrical motor that is driven by the PCM.
The electronic throttle body has two sensors that
measure the throttle plate position. The sensors
output a voltage to the PCM corresponding to the
plate position.
When the electronic throttle body motor is not in
use, the throttle plate sits slightly open in a default
position (not idle position). This position is
maintained by two internal springs. One acts
upwards and one downwards. Screws on the
electronic throttle body will not adjust the idle
speed, the idle speed is controlled by the PCM.
PCM
The PCM reads the voltage from the pedal and
converts this signal into a driver request. The driver
request is realized by opening or closing the throttle
body. To do this, the PCM increases or decreases
power to the electronic throttle body motor. The
PCM then checks the signal from the electronic
throttle body throttle position (TP) sensor, to make
sure that the requested position has been
achieved. The PCM also monitors all the sensors
to make sure that the system is functioning as
expected. All electronic accelerator control system
faults will be detected by the PCM and set a
diagnostic trouble code (DTC) which triggers the
electronic accelerator control fail message
accordingly. For safety reasons, some faults will
also reduce the vehicle performance.
Diagnostic Trouble Codes
Description
When a component electrical error is set it means
that the PCM is not receiving the expected signal.
This means that the concern may lie between the
component and the PCM. All wiring and electrical
connectors should be checked before a new
component is installed. Also note that general
vehicle electrical issues can have an effect on other
systems. Battery voltage and relay concerns should
be rectified first.
Accelerator Pedal Codes
These are the DTCs relating to the pedal circuit.
They do not imply necessarily that the accelerator
pedal is at fault, but it will in any case relate to area
"A (see system overview).
P2120 - Accelerator pedal sensor 1 electrical
error
P2122 - Accelerator pedal sensor I electrical
error short to ground or open circuit
P2123 - Accelerator pedal sensor I electrical
error short to battery
P2125 - Accelerator pedal sensor 2 electrical
error
P2127 - Accelerator pedal sensor 2 electrical
error short to ground or open circuit
P2128 - Accelerator pedal sensor 2 electrical
error short to battery
P2138 - Accelerator pedal sensor 1 & 2 ratio
error
Electronic Throttle Body Circuit Codes
These are the DTCs relating to the electronic
throttle body circuit. They do not imply necessarily
( ,)
that the electronic throttle body is the concern, but
it will in any case relate to area "B" (see system
overview).
PO1 20 - Throttle position (TP) sensor 1
electrical error
PO122 - (TP) sensor 1 electrical error short to
ground
PO123 - (TP) sensor 1 electrical error short to
battery or line break
PO220 - (TP) sensor 2 electrical error
PO222 - (TP) sensor 2 electrical error short to
ground or open circuit
PO223 - (TP) sensor 2 electrical error short to
battery
P2135 - (TP) sensor ratio error
P21
I 9 - Throttle plate convergence error
- This is when the throttle plate has not moved
to the requested position in the required time.
This could be caused by the following:
- The electronic throttle body motor is not
receiving the necessary voltage. Check the
--
electronic throttle body motor wiring. The ( PCM is not receiving the correct throttle plate '
position signal from the electronic throttle
body. Check the TP sensor wiring from the
2006.0 Fiesta 1212006 G356253en
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Acceleration Control - 1.3L Duratec-8V
(Rocam)ll.25L Duratec-1 6V (Sigma)ll.4L
31 0-02A-5 Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
31 0-02A-5
DIAGNOSIS AND TESTING
PCM to the electronic throttle body including
the electrical connectors in area "B" (see
system overview).
- There is an obstruction inside the throttle
body bore. Remove the air cleaner outlet pipe
and check for obstructions.
- There is an obstruction inside the electronic
throttle body. Remove the air cleaner outlet
pipe and check that the plate moves freely
against the springs and returns to a slightly
open position. If it does not, install a new
electronic throttle body.
P2176 - Throttle plate adaptation error
- When the ignition is turned off, the throttle
body carries out an adaptation cycle and
spring check. This can be audible after a
short delay (up to 30 seconds) following the ignition key being turned to position
0 and
can be visually observed with the air cleaner
outlet pipe removed. The throttle plate is
moved through a series of positions to check
the TP sensor value and relearn the
electronic throttle body characteristics. If a
concern is detected during this test,
P2176
DTC will be set. If there are already any of
I the other DTCs, the adaptation test could
potentially fail. Therefore the other DTCs
should be resolved first
(e.g. low battery
voltage) and a retest can be carried out by
clearing the DTCs and keying on and off
again. Check the whole area "B" (see system
overview) for any concerns and if no concern
is found, install a new electronic throttle body.
P2100 - H bridge error
- A fault has been detected on the circuit
connecting the electronic throttle body motor
and the PCM. Check for any other
non-electronic accelerator control related
DTCs and rectify them first. Check area "B"
(see system overview) and if no failure is
found, install a new PCM.
PCM Related Codes
The PCM continuously monitors all the sensors. It
also checks that the monitor is functioning as
expected. If there is a fault with the monitor, the
following DTCs will be set.
P2107 - Processor monitoring on the main
controller fault.
P2108 -Analogue to digital converter
- Inferred intake mass air flow lower than
expected
- Engine speed monitor ratio error
- Pedal ratio monitor error
- TP sensor ratio monitor error
- Fault in torque generation
- Fault present in engine speed limitation
Multiple sensor faults can make the PCM assume
that there is a monitor fault. If other DTCs exist,
rectify these first. These DTCs indicate a failure in
area
"A or "B" and they are also related to the
manifold absolute pressure and temperature
(MAPT) sensor and the crankshaft position (CKP)
sensor. If no other failures are found, install a new
PCM.
Indirect Codes
There are two brake pedal switches located under
the brake pedal. Check that both of these are
connected and functioning correctly. A brake pedal
switch concern will only cause the "EAC FAIL"
message to be displayed, it will not lead to a limited
performance mode. Follow WDS instructions.
PO571 - Brake switch error
If the voltage to the accelerator pedal and the
electronic throttle body cannot be regulated
correctly, the components may not operate as
expected. Therefore it is important to detect if there
is a concern in the supply voltage
PO641 - Sensor voltage supply circuit I noisy
signal
PO642 - Sensor voltage supply circuit 1 short
to ground or open circuit
PO643 - Sensor voltage supply circuit 1 short
to battery
PO651 - Sensor voltage supply circuit 2 noisy
signal
PO652 - Sensor voltage supply circuit 2 short
to ground or open circuit
2006.0 Fiesta 1212006 G356253en
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Acceleration Control - I .3L Duratec-8V
(Rocam)llI25L Duratec-I 6V (Sigma)llI4L
31 0-02A-6 Duratec-I 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
31 0-02A-6
DIAGNOSIS AND TESTING
PO653 - Sensor voltage supply circuit 2 short Inspection and Verification
to battery
- Check the power supply to the PCM (battery 1. Verify the customer concern.
voltage, relays, wiring harness and electrical 2. Visually inspect for obvious signs of mechanical
connectors as well as fuses). If no concern
or electrical damage.
- Follow WDS instructions. I - Accelerator pedal I Fuse(s) I
- is found, install a new PCM.
PI 71 2 - Electronic gear shift torque demand is Visual
Inspection Chart
N0TE:lf the vehicle is in a limited performance
mode, a system related DTC and the electronic
accelerator control fail light message will illuminate.
If there is a performance issue without these items
the electronic accelerator control system is running
correctly but another issue may exist elsewhere
on the vehicle.
not
a plausible signal (ASM only) - Linkage
- Accelerator cable
- Throttle body
Relay(s)
Wiring harness
Electrical
connector(s)
Accelerator pedal
Throttle body
Mechanical
Electrical
Symptom Chart < .I
Be
aware that installing new system related
components without these
DTCs will not improve
Symptom Chart
- Vehicles With 1.3L Engine
Symptom Possible Sources
Powertrain control
module (PCM)
Action
the
vehicle behavior for general issues such as:
high fuel consumption 3.
If an obvious cause for an observed or reported
concern is found, correct the cause (if possible)
poor idle quality before proceeding to the next step.
poor or no engine start
4. If the cause is not visually evident, verify the
symptom and refer to Symptom Chart.
f
Accelerator pedal is hard to
depress or has a
roughlraspy
or sticky feel
Damaged accelerator cable.
REFER to: Throttle Body (303-
04A, Removal and Installa-
tion).
INSTALL a new accelerator
cable.
Accelerator cable incorrectly installed.
Worn or damaged throttle body.
I Accelerator pedal does not I Weak or broken throttle body I INSTALL a new throttle body. I
CHECK the accelerator cable
for correct installation.
INSTALL a new throttle body.
return freely REFER to: Throttle Body (303-
04A, Removal and Installa-
tion).
I Worn or damaged throttle body. I INSTALL a new throttle body. I
I I I REFER to: Throttle Body (303- 1 04A, Removal and Installa-
tion).
High engine idle speed Damaged accelerator cable. INSTALL a new accelerator
I cable.
2006.0 Fiesta 1212006 G356253en
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I <:: .
31 0-02B-4 Acceleration Control - 2.OL Duratec-HE (M14) 31 0-02~-4::'
DIAGNOSIS AND TESTING
Acceleration Control
lnspection and Verification
1. Verify the customer concern.
3. If an obvious cause for an observed or reported \.
concern is found, correct the cause (if possible)
before proceeding to the next step.
2. Visually inspect for obvious signs of mechanical 4. If the cause is not visually evident, verify the
or electrical damage. symptom
and refer to Symptom Chart.
Visual lnspection Chart
I Mechanical I Electrical I
- Accelerator pedal
- Electronic throttle
body
Fuse(s)
Wiring harness(s)
Electrical
connector(s)
Accelerator pedal
Electronic throttle
body
Powertrain control
module (PCM)
Symptom Chart
Accelerator pedal does not
return freely
Symptom Chart
Symptom Possible Sources Action
Accelerator pedal is hard to
depress or has a roughlraspy
or sticky feel
Adjacent hardware, wiring
harness(s), trim(s), carpet or
mat(s) incorrectly installed.
High engine idle speed
Adjacent hardware, wiring
harness(s), trim(s), carpet or
mat(s) incorrectly installed.
Worn or damaged accelerator
pedal.
CHECK the accelerator pedal
and adjacent parts for correct
installation.
worn or damaged accelerator
pedal. CHECK the
accelerator pedal
and adjacent parts for correct
installation.
INSTALL a new accelerator
pedal.
INSTALL a new accelerator
pedal.
Electronic throttle body. REFER to WDS to diagnose
the system.
Damaged
accelerator pedal.
I PCM calibration. REFER
to WDS to diagnose
the system.
REFER to WDS to diagnose
the system.
Poor idling I Electronic throttle body.
- - - - - - - -
2006.0 Fiesta 121200s ~426591 en
REFERto WDS todiagnose
the system.
PCM, calibration.
REFER to WDS to diagnose ),
1- ' the system.
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