Page 434 of 1226

303-00-1 2 Engine System - General Information 303-00-1 2
DIAGNOSIS AND TESTING
Symptom Possible Sources Action
Noisy running Engine auxiliary components
loose or damaged. CHECK
engine auxiliary
components for damage or
looseness. REFER to:
Timing Belt
(303-01 Engine -
1.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V
(Sigma)ll .6L Duratec-I 6V
(Sigma), In-vehicle Repair),
Timing Chain
(303-01 Engine
- 1.3L Duratec-8V (Rocam),
In-vehicle Repair),
Timing Chain
(303-01 Engine
- 2.OL Duratec-HE (M14), In-
vehicle Repair),
Timing Belt
(303-01 Engine -
I .4L Duratorq-TDCi (DV)
Diesel, In-vehicle Repair),
Timing Belt
(303-01 Engine -
1.6L Duratorq-TDCi (DV)
Diesel, In-vehicle Repair).
Noisy running, misfiring, back-
firing or knocking
Incorrect fuel DETERMINE which type of fuel
was last put in the tank (note
the country specific fuel
specifications).
Valve timing incorrect, timing
beltlchain or pulleylsprocket
damaged.
Water in fuel or fuel contamin-
ated.
CHECK and adjust the valve
timing. REFER to:
CHECK the fuel system for
water or other contamination.
Timing Belt
(303-01 Engine -
1.25L Duratec-1 6V
(Sigma)ll.4L Duratec-1 6V
(Sigma)/l.GL Duratec-1 6V
(Sigma), In-vehicle Repair),
Timing Chain (303-01 Engine
- 1.3L Duratec-8V (Rocam),
I n-vehicle Repair),
Crankshaft Pulley
(303-01
Engine - 2.OL Duratec-HE
(M14), In-vehicle Repair),
Timing Belt
(303-01 Engine -
1.4L Duratorq-TDCi (DV)
Diesel, In-vehicle Repair),
Timing Belt
(303-01 Engine -
1.6L Duratorq-TDCi (DV)
Diesel, In-vehicle Repair).
2006.0 Fiesta 1212006 f GI 52554en
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Page 485 of 1226
Engine - 1.25L Duratec-I 6V (Sigma)ll.4L
303-01 A-9 Duratec-1 6V (Sigma)/l .6L
Duratec-1 6V (Sigma) 303-01 A-9
DESCRIPTION AND OPERATION
Engine
i
1.4U1.6L Duratec 16V engine
Overview
The 1.4L and 1.6L Duratec 16V inline engines have The intake air routing and the air cleaner housing
already been installed on Focus vehicles under the have
also been changed. The pistons and piston
name of the Zetec-SE engine. rings
have been modified. The cylinder head cover
Details of this engine have been modified. The is
made of plastic.
routing of the pipes in the intake manifold has been
In addition, the auxiliary drive belt is an elastic
revised, and for the first time the throttle valve is multi-groove belt without a separate tensioning
electronically controlled. roller.
2006.0 Fiesta 1212006 GI 7901 7en
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Page 486 of 1226

303-01 A-I 0
Engine - I .25L Duratec-1 6V (Sigma)ll.4L
Duratec-1 6V (Sigma)/l .6L Duratec-1 6V (Sigma)
DESCRIPTION AND OPERATION
Engine Engine emission control
Cross-mounted 16-valve DOHC engines with 59 European emissions level IV
kW (80 PS) and 74 kW (1 00 PS) respectively.
European on-board diagnosis (EOBD) for the
Valve train with mechanical bucket tappets monitoring of emissions-relevant components.
Cylinder block and cylinder head made of an
aluminium alloy
Diagnosis
Auxiliary drive via a self-tensioning belt without a
belt tensioner WDS diagnosis CD
817.
Instrument cluster (engine indicator lamp)
Engine management
Sequential multi-port fuel injection (SFI)
temperature and manifold absolute pressure (T-MAP) sensor in conjunction with a Siemens
powertrain control module (PCM).
Knock control
PCM with 84 pins and integrated passive anti-theft
system (PATS) immobiliser. Torquelpower
The Duratec 16V engines are characterised by
their high level of running refinement, low emission
levels and balanced development of power.
Description Description
Power curve for the 1.6L-Duratec 16V 3 Torque curve for the 1.6L-Duratec 16V ( ',I
Power curve for the 1.4L-Duratec 16V 4
Torque
curve for the 1.4L-Duratec 16V
2006.0 Fiesta 1212006 GI 7901 7en
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Page 941 of 1226

303-1 4-1 7 Electronic Engine Controls 303-1 4-1 7
DIAGNOSIS AND TESTING
The DTC is always a 5 digit alphanumerical
code, for example
"POI 00".
The first digit of a code (letter) identifies the
system which has set the code. Provision has
been made for a total of four systems to be
identified although only the
'PI code is required
for EOBD.
- 'B' for the body
- 'C' for the chassis
- 'P' for the powertrain
- 'U' for the network communications systems
All of the
"xOxxxW codes are standardized codes.
However, any manufacturer can use additional
codes over and above the standardized codes.
These will be labelled
"xlxxx"
The third digit of a code (numeric) identifies the
sub-system which has set the code.
- 'Pxlxx' for metering of fuel and air supply
- 'Px2xx' for metering of fuel and air supply
- 'Px3xx' for ignition system - combustion
misfires
- 'Px4xx' for auxiliary emission control
equipment
- 'Px5xx' for vehicle speed, idle setting and
other related inputs
- 'Px6xx' for trip computer and other related
outputs
- 'Px7xx' for transmission.
- 'Px8xx' for transmission.
- 'Px9xx' category to be determined
- 'PxOxx' category to be determined
When a concern occurs, the actions taken
include storage of the relevant information and
actuation of the MIL occurs in line with the
relevant legislation.
MIL Code List
I PO030 I Heated oxygen sensor (H02S) heater open circuit I
! '
-1 H02S heater low voltage I
I PO032 I H02S heater high voltage I
MILCode
PO036 1- ' Catalyst monitor sensor heater open circuit I
Description
PO037
I PO054 I Catalyst monitor sensor heater resistance out of limits I
Catalyst monitor sensor heater low voltage
PO038
PO053
I PO106 I Manifold absolute pressure (MAP) sensor plausibility malfunction I
-
Catalyst monitor sensor heater high voltage
H02S heater resistance out of limits
I PO107 I MAP sensor circuit low input I
PO108
PO1 09 MAP sensor
circuit high input
MAP sensor temporary malfunction
PO1 12
PO113
I PO117 I ECT circuit low input I
Intake air temperature (IAT) circuit low input
IAT circuit high input
I
2006.0 Fiesta 1212006 G384566en
PO114
PO1 16
PO118
IAT intermittent failure
Engine coolant temperature (ECT) signal stuck at low level
ECT circuit high input
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Page 968 of 1226
Automatic Transmission/Transaxle -
Vehicles With: 4-Speed Automatic
Transmission
(AW81-40) 307-01 -8
DESCRIPTION AND OPERATION
Planetary
gearset
Description The following connections exist between the
/ individual components:
small sun gear - short planet gears - long planet
Long planet gear gears- annulus,
3 Small sun gear large sun gear - long planet gears - annulus.
4
5
The output always flows through the annulus.
6
2006.0 Fiesta 1212006 ~380521 en
Short planet gear
Transmission input shaft The different transmission ratios
are selected by
actuating and releasing the individual clutches and
brakes.
shaft via the corresponding clutch either onto the
A Ravigneaux planetary gearset is a two-stage
small sun gear (1st - 3rd gear) or the planet gear gearset with a shared planet gear carrier and one carrier (3rd and 4th gear) or the large sun gear annulus. (reverse gear).
Large sun gear
The drive is transmitted from the transmission input
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