oil FIAT MAREA 2000 1.G User Guide

Marea Weekend Technical Data
2000 range o Rear suspension
00.44
Rear suspension independent with track control arms anchored to an auxiliary crossmember. Variable
flexibility coil springs and anti-roll bar. Gas shock absorbers with low friction coefficient lower bushes.
ENGINE TYPE
Coil springs
Wire diameter mm 12.3±0.1 12.8±0.1
Number of effective coils 5.93 5.93
Coil direction clockwise
Released spring height mm 320 322
419-445 daN mm
Spring height under
184 -
a load of:
432 daN mm -184
Spring are divided into two categories,
identified by markings
412 daN
yellow (1) for those: oT mm
>184 _
under a load of hpinht
432 daN a
of mm
->184
412 daN aJS* green (1) for those ot mm
<184 -
under a load of: _ hpiflht 432 daN a "eif£J ot mm -<184
(1) Springs of the same type must be fitted.
Dampers
Make double acting, telesopic, gas
Open (start of damping action) mm 321 ± 2
Closed (iron against iron) mm 224 ± 2
Stroke mm 97
Anti-roll bar
Anti-roll bar diameter mm 17
Copyright by Fiat A uto 45

Technical Data Marea- Marea Weekend
Electrical system 2000 range (§)
00.55
i^p} 16v J^M) 20v
STARTER MOTOR
Bosch
DW -12V -1.1 kW
Valeo
DGRA-12V-1,3kW(B)
Bosch
0 74.5-1.1/12V
Bosch
O 78.5-2 kW/12V
ALTERNATOR
Bosch
KCB1-14V-45/80A
Bosch
KCB2-14V-50/90A
(•) n
M. Marelli
A127IR-14V-55/100A
M. Marelli
A115IM-14V-55/105A
M. Marelli
A115IR-14V-70/120A
(•)
VOLTAGE REGULATOR BUILT IN ELECTRONIC
BATTERY
12V-50Ah-250A
12V-60Ah-380A
(A) n
12V-50Ah-250A 12V-60Ah-380A
12V-70Ah-450A (A)
IGNITION SYSTEM
Integrated electronic
injection-ignition
MPI I.A.W.
Weber-Marelli
Injection-ignition
Bosch Motronic MPI
integrated electronic
-
IGNITION
COIL M. Marelli BAE 920 A Bosch 0.221.504.014 -
SPARK PLUGS NGK BKR5EZ
Champion RC10YCC Champion RC8BYC -
CONTROL UNIT
INJECTION ADVANCE ELEC­
TRONIC
--Bosch EDC 15 C7
(•) For vehicles with climate control system (*) North European version (A) For the TAXI version
(•) Alternative
46 Print n° 506.763/23

Technical Data Marea-Marea Weekend
Electrical equipment: electronic injection- ignition 2000 range ©)
00.55
INTEGRATED ELECTRONIC
INJECTION/IGNITION SYSTEM r^p) lev
Make I.A.W. M.P.I. WEBER - MARELLI
Firing order 1-3-4-2
INJECTION/IGNITION CONTROL UNIT
Make and versions with manual gearbox I.A.W. 4EF. B3
type versions with automatic transmission I.A.W. 4EF. L1
IGNITION COIL WITH 4 HIGH TENSION INTAKES
Make Champion
Type BAE 920 A
Ohmic resistance of primary winding at 20°C Q 0.580
Ohmic resistance of secondary winding at 20°C Q 9100
SPARK PLUGS
Make and type NGK BKR5EZ
CHAMPION RC10YCC
Thread on engine M14x1.25
Spark gap mm 0.8
TOP DEAD CENTRE AND RPM SENSOR
Make M. Marelli
Type CVM 02
Sensor winding resistance at 20°C Q 575-750
Distance (gap) between sensor and
crankshaft pulley tooth 0.5 + 1.5
ADVANCE ON ENGINE
With engine idling 700±50/min 4°
50 Print n° 506.763/23

Marea- Marea Weekend Technical Data
2000 range © Electrical equipment: electronic injection- ignition
00.55
INTEGRATED ELECTRONIC
INJECTION/IGNITION SYSTEM I^P) 20v
Make Bosch ME31F001
Firing order 1-2-4-5-3
IGNITION COIL (1 PER SPARK PLUG)
Make Bosch
Type 0.221.504.014
Ohmic resistance of primary winding at 20°C Q 0.,4
Ohmic resistance of secondary winding at 20°C Q 8500
TOP DEAD CENTRE AND RPM SENSOR
Make and type Bosch 0.281.002.102
Sensor winding resistance at 20°C Q 774 + 946
Distance (gap) between sensor and
crankshaft pulley tooth 0.8 H- 1.5
DETONATION SENSOR
Make Bosch
Type 0.261.231.095
SPARK PLUGS
Make and type CHAMPION RC8BYC
Thread on engine M 14x 1.25
Spark gap mm 0.8
Copyright by Fiat Auto 51

Marengo 0 ™ Technical Data
2000 range Suspension and wheels
OO.o
Rear suspension independent with track control arms anchored to an auxiliary crossmember. Variable
rate coil springs and antiroll bar. Gas shock absorbers with low friction coefficient lower bushes.
ENGINE TYPE
Coil springs
Diameter of wire mm 13.9 ± 0.1
Number of coils 5.93
Direction of coil clockwise
Height of spring released mm 323
Height under 424 ± 456 daN mm a load of : 207
The springs are divided into two categories,
identifiable by a mark:
XX°l 440 daN having a heigh, of i -i x mm load of:
> 207
green (1) for having a height of those under a 440 daN a a i J x. mm load of:
^ 207
(1) When fitting, match springs of the same type.
Shock absorbers
Make double acting, telesopic, gas
Open (start of damping action) mm 321 ± 2
Closed (metal against metal) mm 224 ± 2
Travel mm 97
Anti-roll bar
Anti-roll bar diameter mm 19
FRONT SUSPENSION
Anti-roll bar
Anti-roll bar diameter mm 18
Copyright by Fiat Auto 3

Marea- Marea Weekend 9* Engine
2000 range (Q) Fuel feed system
10.
LOCATION OF INJECTION/IGNITION SYSTEM COMPONENTS IN THE ENGINE COMPART­
MENT
1 2345678 9
Key
1. Active charcoal filter
2. Anti-evaporation solenoid valve
3. Intake air pressure and temperature sensor
4. Engine idle adjustment stepping motor on
throttle casing
5. Throttle valve position sensor on throttle cas­
ing
6. System relay feed
7. Protective fuse
8. Throttle case
9. Maxi-fuse protecting I.E. system (EFI)
10. Speedometer sensor
11. Engine management control unit
12. Coolant temperature sensor
13. Ignition coil
14. Injectors
15. Rpm and TDC sensor
16. Timing sensor
17. Spark plugs
Copyright by Fiat Auto 3

Engine
Fuel feed system
Marea-Marea Weekend ®> *»
2000 range @)
10.
LOCATION OF INJECTION/IGNITION SYSTEM COMPONENTS
Key
1. Variable valve timing control solenoid
2. Injectors
3. Fuel vapour cut-out solenoid valve
4. Injection/ignition control unit
5. General system protective fuse
6. Flow meter/air temperature sensor
7. Motorized throttle body
8. Engine coolant temperature sensor
9. Vehicle speed sensor
10. Variable geometry manifold actuator solenoid
valve
11. RPM sensor
12. Front Lambda sensor connector
13. Ignition coil
14. Timing sensor
15. Rear Lambda sensor connector
16. Detonation sensors
17. Accelerometer
LOCATION OF DIAGNOSTIC SOCKET
The diagnostic socket for the analysis of the en­
gine management system is located under the
junction unit in the dashboard. This socket also
makes a connection with the diagnostic equip­
ment (Examiner or other instruments) for the
other electronic control units on the vehicle.
It is a "standardized" 16-way diagnostic socket
which can be connected to the diagnostic equip­
ment using the "MPX97" adaptor.
2 Print n° 506.763/23

Marea- Marea Weekend 9"°
2000 range ©
Engine
Fuel feed system
10.
TIMING SENSOR
The Hall effect sensor is fitted to the cylinder head and faces the camshaft pulley.
An opening on the pulley allows the timing sensor to detect the engine timing position and indicate it to
the injection control unit.
The injection control unit uses the timing sensor signal to detect TDC at the end of compression.
Operation
A semi-condulator layer, through which a current passes, immersed in a magnetic field (lines of force per­
pendicular to the direction of the current), produces a difference in power, known as Hall voltage.
If the intensity of the current remains constant, the voltage produced only depends on the intensity of the
magnetic field. The intensity of the field can simply be altered periodically to produce a modulated electri­
cal signal. Signal frequency is proportional to the speed with which the magnetic field changes.
To achieve this change, the sensor is crossed by a metal ring (inner part of the pulley) with an opening.
When it moves, the metal part of the ring covers the sensor to magnetic field and the output signal is
therefore low; Conversely, the sensor generates a high signal at the opening when the magnetic field is
present.
This signal, together with the rpm and TDC signals, allows the injection control unit to identify piston po­
sition and determine injection point.
AIR FLOW METER
(DEBIMETER)
The debimeter is located on the air intake
sleeve and is hot film type.
The debimeter contains an intake air tem­
perature sensor.
Operation
The principle of operation is based on a
heated membrane fitted into a measurement
channel through which engine intake air
flows.
The hot film membrane is maintained at a
constant temperature (about 120 °C higher
than incoming air) by the heater coil.
The mass of air flowing through the measure­
ment channel tends to take heat from the
membrane. To keep the membrane at constant
temperature, a certain current level must flow
through the resistance.
Because this current is proportional to the
mass of air that flows to the engine, it can be
measured with a Wheatstone bridge and the
resulting signal is sent to the injection control
unit.
1. Covers
2. Electronic card
3. Sensor
4. Mounting plate
5. Mount
6. o-ring
7. Temperature sensor
Copyright by Fiat Auto 13

Engine
Fuel feed system
10.
1. Pressure rod
2. Pin
3. Nozzle
4. Coil
5. Pilot valve
6. Ball plunger
7. Control area
8. Supply volume
9. Control volume
10. Fuel outlet connector (low pressure)
11. Control port
12. Supply port
13. Electrical connection
14. Fuel input connector (high pressure)
15. Spring
Marea- Marea Weekend 9 ™
2000 range (Q)
INJECTORS
The injectors are fitted to the cylinder head
and are electromagnetic in type. They are
controlled directly by the injection control
unit.
The injectors come with a high-pressure sup­
ply port and a recirculation pipe at environ­
mental pressure; The supply port is connected
to a delivery manifold (rail) with pipes de­
signed to withstand the high service pressures.
The injector can be divided into two parts:
- Actuator/spray made up of a pressure rod
(1), pin (2) and nozzle (3);
- control solenoid made up of coil (4) and
pilot valve (5).
Operation
Injector operation may be divided into three
stages:
1. rest position
Coil (4) is deactivated and plunger (6) is in
closed position to prevent fuel entering the
cylinder: Fc > Fa where Fc is the force gener­
ated by pressure acting on the control area (7)
of pressure rod (1) and Fa is the force due to
the pressure acting on supply volume (8).
2. Start of injection
Coil (4) is excited and causes plunger (6) to
rise. Fuel flows from control volume (9) to
the return manfold to bring about a pressure
drop in control area (7). Simultanteously, line
pressure through supply port (12) exerceses a
force Fa > Fc on supply volume (8) to cause
pin (2) to rise and thus allow fuel into the
cylinders.
3. end of injection
Coil (4) is deactivated and causes plunger (6)
to return to closed position. The resulting bal­
ance of forces makes pin (2) return to rest po­
sition and injection therefore ends.
14 Publication no. 506.763/24

Engine
Fuel feed system
JTD Marea-Marea Weekend ©
2000 range ©
10.
iH
ft
B I 0 ] I D
[ 0 0 1 1
D
0 1 GLOW PLUG PREHEATING CONTROL
UNIT
The glow plugs are controlled by means of a
preheating control unit under the direct con­
trol of the injection control unit.
The preheating control unit contains a smart
relay that sends a return response (feedback)
to the injection control unit, which is thus in­
formed of faults in the preheating control unit
or glow plug short-circuits to earth.
The figure shows the connectors on the base
of the preheating control unit and the pin-out
1. Earth
2. Injection control unit (pin 22)
3. Power supply from main injection relay
4. Not connected
5. Injection control unit (pin 62)
8. Positive from battery (+30)
G. Glow plugs (only four outputs are used)
ACCELERATOR
PEDAL POTENTIOMETER
Accelerator pedal position is converted to an
electrical voltage signal and send to the injec­
tion control unit by a potentiometer connected
to the accelerator pedal.
Accelerator pedal position is processed to­
gether with rpm information to provide injec­
tion times and pressure.
The sensor consists of a case (1) secured to
the pedal by a flange, which contains an axi-
ally-positioned shaft (2) connected to two
potentiometers (3): main and safety potenti­
ometers.
A coil spring on the shaft ensures the correct
resistance to pressure while a second spring
ensures return upon release.
16 Publication no. 506.763/24