Page 88 of 330
Engine
Fuel feed system
Marea- Marea Weekend © ™
2000 range ©
10.
FUEL SYSTEM OPERATING DIAGRAM
1. Pressure pump
2. Electrically-controlled EGR valve
3. Flow meter
4. Pressure regulator
5. Fuel filter
6. Instrument panel
7. Glow plug preheating control unit
8. Electronic control unit
9. Injection system relay
10. Return manifold (low pressure)
11. RPM sensor
12. Glow plugs
13. Engine coolant temperature sensor
14. Potentiometer on accelerator pedal
15. Switch on brake pedal
16. Switch on clutch pedal
17. Variable geometry turbocharger
18. Timing sensor
19. Injectors
20. Fuel pressure sensor
21. Variable geometry turbocharger control sole
noid
22. Auxiliary fuel pump
23. Glow plug preheating warning light
24. System failure warning light
25. Pressure relief sensor
26. Fuel temperature sensor
27. Throttle valve
28. Variable geometry actuator
29. Vacuum tank
30. Exhaust gas heat exchanger
2 Publication no. 506.763/24
Page 93 of 330
Marea- Marea Weekend 9 ™
2000 range ©
Engine
Fuel feed system
10.
DIAGRAM SHOWING INFORMATION FLOW BETWEN THE INJECTION CONTROL UNIT AND
SENSORS/ACTUATORS
1. Auxiliary fuel pump
2. Variable geometry turbocharger control sole
noid
3. Climate control compressor
4. Electric EGR valve
5. Rev counter
6. Engine radiator fan
7. Glow plug preheating control unit
8. Potentiometer on accelerator pedal
9. Brake and clutch pedal switches
10. Fuel pressure sensor
11. Intake air flow and temperature sensor (de-
bimeter)
12. Coolant temperature sensor
13. Fuel temperature sensor
14. Pressure relief sensor
15. Timing sensor
16. Rpm sensor
17. Vehicle speed signal
18. Battery
19. Four stage pressure switch
20. Fiat CODE control unit
21. Diagnostic socket
22. Fuel pressure regulator
23. Injectors
24. Throttle valve control solenoid
25. Glow plug preheating warning light
26. Injection system failure warning light
Copyright by Fiat Auto 1
Page 132 of 330
Electrical equipment
Protection and safety devices
Marea- Marea Weekend
2000 range ©)
55.
Main supplies wiring diagram (petrol engine types)
Component key
3B/C Power fusebox
3A/D Supplementary fusebox
4 Junction unit
10 Engine battery earth
10A Bodyshell battery earth.
11 Battery
12 Ignition switch
96 Power fuse protecting A.B.S
129 Engine cooling fan protection power fuse.
332 Ignition activated power relay.
(*) See table on previous page.
2 Print n° 506.763/23
Page 133 of 330
Marea- Marea Weekend
2000 range ©)
Electrical equipment
Protection and safety devices
55.
Main supplies wiring diagram (diesel engine types)
Component key
3B/C Power fusebox
3A/D Supplementary fusebox
4 Junction unit
10 Engine battery earth
10A Bodyshell battery earth
11 Battery
12 Ignition switch
96 Power fuse protecting A.B.S
129 Engine cooling fan protection power fuse.
129A Power fuse protecting engine cooling fan
no.2
201 Heaer plugs control unit
332 Ignition activated power relay.
Copyright by Fiat Auto 3
Page 134 of 330
Electrical equipment
Junction unit
Marea-Marea Weekend
2000 range ©
55.
Junction unit
»F11=
~T~ II l;
•F9° |["^FT^1| °F10°ir°F13=
| ^14=- ir=F15«=- II
»F12=
SLHHItHia r i i i •
3F4= ir^F8=1l =F7="|| °F6 = 1
I I I I I 1 I '
14 5 4 12-
lor
1-11-J
I 1
J 7_
a o_o o_o OLD n.
Front view of control unit
and location of fuses
The connectors cannot
be connected incor
rectly as each has its
own unique shape. The
letters identifying the
connectors are the same
as those used in the
wiring diagrams .
NOTE connectors A, C and D: are connected to the front lead.
connectors B,F, I, J and H are connected to the facia lead
connectors E and G are connected to the rear lead
Rear view of control unit
and location of relays.
E1. Switch discharge relay for
starting (30A)
E2. Horn relay (20A)
E3. Heated rear windscreen relay
(30A)
4 Print n° 506.763/23
Page 145 of 330

Marea- Marea Weekend
2000 range ©
Electrical equipment
Control module
55.
Wiring diagram
.mrmmmL 18 3 4 5 6 7 8 9 10 U 1213 1415161718 |TTTTrTrrrrTTTTT1.TTTTT1pmL 18 3 4 5 6 7 8 9 10 11 121314151617181920213223248586
n ti
O Mill
(*) JTD
A. Battery recharging warning light
B. Low engine oil pressure warning light
C. Left direction indicator warning light
D. Right direction indicator warning light
E. Side lights warning light
F. Instrument panel symbol lighting
G. Main beam warning light
H. Air Bag fault warning light
I. ABS failure warning light
J. Fuel reserve warning light
K. Fuel level gauge
L. FIAT CODE system warning light
M. Injection system failure warning light
M1. EOBD warning light
N. Water in diesel filter warning light
O. Heater plugs warning light
(**) TD 75 BHP
P. Seat belt warning light
Q. Brake pad wear warning light
R. Low brake fluid/handbrake on/EBD sys
tem failure warning light
S. Brake light electronic control module
T. Brake light failure warning light
U. Doors open warning ilght
V. Speedometer
W. Rev counter
X. Engine coolant temperature gauge
Y. Electronic module
Z. Milometer - trip meter/outside tempera
ture gauge
Z1 Odometer reset button
* Short-circuit plugs
Copyright by Fiat Auto 15
Page 183 of 330
Marea-Marea Weekend
2000 range ©
Electrical equipment
Index
Electrical symbols
Explanation for reading wiring diagram
Wiring diagrams
Connector block
Key
55.
page
1
4
5
82
141
Copyright by Fiat Auto
Page 184 of 330

Marea-Marea Weekend Electrical system
2000 range ©> Wiring diagrams
55.
DESCRIPTION
Marea-Marea Weekend
DESCRIPTION JTD
SIDE LIGHTS AND WARNING LIGHT - DIPPED HEADLAMPS - MAIN BEAM HEADLAMPS AND WARNING LIGHT - NUMBER PLATE LIGHTS (POLYELLIPTIC HEADLAMPS) 5 5 5 5
SIDE LIGHTS AND WARNING LIGHT - DIPPED HEADLAMPS - MAIN BEAM HEADLAMPS AND WARNING LIGHT - NUMBER PLATE LIGHTS (PARABOLA HEADLAMPS) 7 7 7 7
FOG LIGHTS - REAR FOG LIGHTS 9 9 9 9
DIRECTION INDICATORS AND WARNING LIGHT (WITH ALARM) - HAZARD WARNING LIGHTS - BRAKE LIGHTS (WITH CHECK) - REVERSING LIGHTS 11 11 11 11
DIRECTION INDICATORS AND WARNING LIGHT (WITHOUT ALARM) - HAZARD WARNING LIGHTS - BRAKE LIGHTS (WITHOUT CHECK) - REVERSING LIGHTS 13 13 13 13
FIAT MAREA
CAR INTERIOR LIGHTING - SYMBOL LIGHTING 15 15 15 15
FIAT MAREA WEEKEND
CAR INTERIOR LIGHTING - SYMBOL LIGHTING 17 17 17 17
RADIO SYSTEM - CIGAR LIGHTER 19 19 19 19
FRONT ELECTRIC WINDOWS 21 21 21 21
REAR ELECTRIC WINDOWS 23 23 23 23
FIAT CODE DEVICE AND WARNING LIGHT 25 25 25 25
ALARM/DOOR CHECK 27 27 27 27
CENTRAL LOCKING 29 29 29 29
HEATED, ELECTRICALLY ADJUSTABLE DOOR MIRRORS 31 31 31 31
Copyright by Fiat Auto '' XI Supersedes previous verster*.