Cable FIAT MAREA 2000 1.G Workshop Manual

Engine
Fuel feed system
Marea- Marea Weekend
2000 range @
10.
FUEL ANTI-EVAPORATION SYSTEM
The fuel anti-evaporation system has several improvements, compared with previous versions, aimed at
sealing the fuel vapours on the outside.
In particular, the following measures have been adopted:
- multi-purpose valve on the tank to prevent leaks.
- New anti-evaporation solenoid valve and the adoption of rapid attachment connectors for the anti-
evaporation system pipes.
- Plug on the fuel filler with attachment cable.
For further information on the fuel system, refer to publication: 507137.
Key
1. Filler
2. Multi-purpose valve
3. Active charcoal filter
4. Anti-evaporation solenoid
valve
5. Fuel vapour intake on inlet
manifold
6. Fuel tank
7. Engine management elec­
tronic control unit
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 the connection with the diagnostic equip­
ment (Examiner or other instruments) for the
other electronic control units on the vehicle.
In effect, it is a "standardized" 16-way diagnostic
socket which can be connected to the diagnostic
equipment using the "MPX97" adaptor.
2 Print n° 506.763/23

Engine
Fuel feed system
Marea- Marea Weekend •
2000 range @
FRONT LAMBDA SENSOR
Removing
- Disconnect the negative battery terminal.
1. Disconect the electrical conection (1a), re­
lease the wiring from the retaining band
(2) and disconnect the Lambda sensor (3).
Refitting
- Position the sensor and tighten it to torque
avoiding forcing the component which
would damage it irreparably.
Apply special grease (e.g. Bosch 5
964080112) to the threaded part of the
sensor.
REAR LAMBDA SENSOR
Removing
- Position the vehicle on a lift.
- Disconnect the negative battery terminal.
2. Disconnect the electrical connection (1)
and release the wiring from the retaining
bands.
3. Raise the vehicle and disconnect the
Lambda sensor.
Refitting
- Position the sensor and tighten it to torque
avoiding force on the component which
would damage it irreparably.
Apply special grease (e.g. Bosch 5
964080112) to the threaded part of the
sensor.
- Connect the connector and renew the
Lambda senor cable fastenings.
4 Print n° 506.763/23

Engine
Fuel feed system
16v Marea- Marea Weekend ©
2000 range @
1. Loosen the band securing the catalyzer
acting on the bolt (1) and undo the bolts
(2) fixing the band to the bracket.
2. Disconnect the connector for the rear
Lambda sensor and release the cable from
the retaining bands along the routing.
3. Raise the vehicle, undo the bolts fixing the
catalytic converter to the rear exhaust pipe
and detach the converter, complete with
rear Lambda sensor.
EXHAUST MANIFOLD
Removing-Refitting
- Position the vehicle on a lift, disconnect
the negative battery terminal and discon­
nect the following components, as de­
scribed in the relevant paragraphs.
- Front Lambda sensor
- Catalytic converter heat shield
- Catalytic converter.
4. Remove the protective cover for the power
assisted steering pump drive belt.
6 Print n° 506.763/23

Marea- Marea Weekend & Engine
2000 range (§) Fuel feed system
ENGINE MANAGEMENT SYSTEM
Foreword
The Marea-Marea Weekend 1998 20v is equipped with a 5 cylinder in line engine with 20 valves, 1998
cc, twin overhead camshaft and a Bosch ME3.1 integrated electronic injection/ignition system.
The fuel system differs from the one described for the 1998 20v "99 range" version through the addition
of several variants to make it compatible with the EEC Stage 3 EOBD regulations.
The main modifications to the system can be summarized as follows:
- Catalytic converter near the exhaust manifold to take maximum advantage of the heat of the gases.
- Two Lambda sensors, one upstream (front) and one downstream (rear) which check the quality of the
exhaust gases and the operation of the catalyzer.
- Adoption of an accelerometre sensor on the right shock absorber turret, used to distinguish between
engine torque variations doe to the uneveness of the road surface and those due to failed ignition in
the combustion chamber (misfire).
- Adoption of a timing sensor on the inlet side timing pulley.
- Multi-purpose valve on the tank to prevent leaks.
- Adoption of raipd attachment connectors for the anti-evaporation system pipes.
- Cap on the fuel filler with an attachment cable.
For further information on the fuel system, refer to publication 507137.
DIAGRAM SHOWING ENGINE EXHAUST ASSEMBLY
4F001WJ01
Key
1. Exhaust manifold
2. Catalytic converter
3. Front Lambda sensor
4. Rear Lambda sensor
5. Silencers
Copyright by Fiat Auto 1

Engine
Fuel feed system
Marea- Marea Weekend @ ™
2000 range ©
PRESSURE REGULATOR
NOTE During the operations of removing-
refitting the pressure regulator, work
in extremely clean conditions.
Removing
- If the vehicle is equipped with a shield un­
der the engine, remove it.
1. Remove the engine oil filler plug (1), then
undo the fixing nuts (2) and remove the
sound insulation cover (3).
2. Undo the bolts (1) fixing the retaining
bands for the injector wiring.
Disconnect the electrical connectors (2) for
the injectors and place the wiring to the
side.
- Release the injection cable loom from the
retaining bands.
3. Undo the nuts (1) fixing the fuel return
manifold pipe (2) to the intake manifold.
Place the fuel return manifold pipe to the
side.
4. Disconnect the electrical connector (1) for
the pressure regulator, then undo the bolts
(2) fixing the regulator to the pump.
36 Print n° 506.763/25

Marea- Marea Weekend
2000 range ©
Electrical equipment
Protection and security devices
55.
PROTECTION AND SAFETY DEVICES
All the vehicle supply lines were designed taking into account the most up-to-date directives in terms of
safety and protection, especially to prevent fires.
There are 2 types of protection:
- active protection, aims to reduce the causes of faults "at source"
- passive protection, aims to limit the effects of a fault as much as possible
The first category includes a carefully designed wiring layout with wires positioned and carefully anchored
on tracks that are repaired and protected if necessary.
The cables connected to the alternator and the motor were modified for this reason by adding protective
caps etc. A strengthened sheath was also introduced for some of the more exposed sections of wiring.
The passive protection includes all interventions to reduce faults due to high current (overload, short cir­
cuit).
All system fuses were rated based on the nominal absorbtion of the loads activated at the same time, to
ensure intervention in cases of a clear short circuit.
The introduction of a box containing 4 maxifuses with other fuses connected on the outside means all
the supplies can be protected except for the cable that connects the battery to the starter motor and the
cable that connects the starter motor to the recharging alternator. These cables are therefore protected by a
strengthened supplementary sheath.
In "MAXI" fusebox A:
EFI electronic injection fuse (petrol)
GLOW: plug fuse (diesel)
IGN: ignition switch fuse
J/B2 fuse master supply .
J/B1 fuse master supply
Next to the box.
B: fan fuse (see table)
C: ABS 60A fuse
D: second fan fuse: 40A (JTD)
115961 1998
iFil 30A IJ/B21 BOA
fiGNl 4OA IJTBTI BOA
1910JTD
IGLOWl 60A P7B21 80A
MGNI 40A IJ/Bll 80A
FUSE B
30A engine petrol without air conditioner
40A 1596 with air conditioning, JTD
50A 1998 wth air conditioning
Copyright by Fiat Auto 1

Marea- Marea Weekend
2000 range ©
Electrical equipment
Control module
55.
The vehicle is fitted with numerous electronic
control units which have autodiagnostic func­
tions.
When these control units are connected to di­
agnostic equipment (Examiner or other in­
struments) it is possible to read the autodiag­
nostic information (parameters, errors) or carry
out active diagnosis.
On the version with EOBD (European On
Board Diagnosis) which conforms to Directive
98/69/CE (EURO 3), there is not an indi­
vidual diagnostic socket for each control
unit, but a single.- standardized 16-way
diagnostic socket, on the left hand side of
the dashboard, under the junction unit.
The diagnostic equipment (Examiner or other instruments) is connected to it using a special adaptor
known as "MPX 97". Using this adapator it is possible to select the system the autodiagnosis is going to
be carried out on.
Pin- out View of connector, cable entry side
Pin System
1 ABS
2 N.C.
3 Air Bag
4 Power earth
5 Signal earth
6 N.C.
7 Engine management and FIAT CODE
8 N.C.
9 Climate control
10 N.C.
11 Alarm
12 N.C.
13 N.C.
14 N.C.
15 Automatic transmission.
16 Connector supply
Copyright by Fiat Auto 13

Electrical equipment
Instrument panel
Marea- Marea Weekend
2000 range ©
55.
Rear side (the connector sockets are shown)
Connector A (on front lead) Connector B (on facia lead)
Pin no. Cable colour Circuit involved
1 BV EBD system failure
2 BN Brake fluid level
3 BR Brake pad wear
4 CL Heater plugs (JTD)
5 MN FIAT CODE
6 LN Injection system failure (JTD)
7 HN Battery recharging
8 HG Engine oil minimum pressure
9 LN EOBD (petrol only)
10 RV ABS fault
11 GN Reserve signal (petrol only)
12 VB Speedometer signal
13 AG +30 battery
14 CN Speedometer generator power sup­ply
15 HB engine coolant temperature
16 HL Outdoor temperature signal
17S HM Speedometer signal
18 L Rev counter signal
(*) not connected in this version
Pin no. Cable colour Circuit involved
1 RG Left brake light failure
2 RV Brake light switch
3 RV Brake light switch
4 C Air Bag system fault
5 GV Water in diesel filter (JTD)
6 M Seat belt
7 -N.C.
8 A Left turn signal
9 AN Right turn signal
10 -N.C.
11 GN Side lights
12 LB Main beam headlamps
13 BN Handbrake on
14 RN Right brake light failure
15 H Doors open
16 CN Boot open
17S -N.C.
18 GR Instrument panel light
19 N Lighting earth
20 HG Fuel level
21 GL Outdoor temperature display
22 R +15 from ignition
23 N electronic earth
24 -speedometer signal (*)
25 VN Speedometer signal
26 -speedometer signal (*)
16 Print n° 506.763/23

Electrical equipment
Control module
Marea- Marea Weekend
2000 range ©
55.
Rear side (the connector sockets are shown)
Connector A Connector B
N° Cable
colour Circuit involved
1 HN Generator (G)
2 BN Brake fluid level (J)
3 -Injection system failure (*)
4 AG +30
5 LN EOBD (E)
6 -Not connected
7 -Turbocharging (N)
8 BR Brake pad wear (K)
9 MN Fiat Code (L)
10 -Heater plugs (*)
11 -Not connected
12 HG Minimum oil pressure (H)
13 HM Speedometer signal
14 HL Outside temperature signal
15 CN Speedometer module supply
16 L Rev counter signal
17 HB Coolant temperature gauge
18 -Not connected
19 RV ABS failure (M)
20 -Trailer lights (*)
N° Cable
colour Circuit involved
1 LB Main beam headlamps (D)
2 GR Instrument panel light
3 GN Side lights (C)
4 -Not connected
5 BN Handbrake (J)
6 M Seat belt (I)
7 N Earth
8 -Speedometer signal (*)
9 VB Speedometer signal
10 A Left turn signal
11 AN Right turn signal
12 -Not connected
13 CA Automatic transmission (A)
14 N Earth (electronic)
15 GL Outside temperature switch
16 HG Fuel level
17 R + 15
18 C Air Bag failure (B)
19 GN Fuel reserve
20 -Speedometer signal
(*) not used
18 Print n° 506.763/23

Electrical equipment
Wiring diagrams
Marea- Marea Weekend
2000 range ©
55.
EXPLANATION FOR READING WIRING DIAGRAM
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Key to references
A Component code
B Connector code
C Colour code
D Connection number of ways
E Connection number of ways
F Ultrasound welding taped in cable loom
4 Print n° 506.763/23