Page 102 of 330
![FIAT MAREA 2000 1.G Workshop Manual Engine
Fuel feed system
JTD Marea-Marea Weekend ©
2000 range ©
10.
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ft
B I 0 ] I D
[ 0 0 1 1
D
0 1 <fi=2 1 1 15J
GLOW PLUG PREHEATING CONTROL
UNIT
The glow plugs are controlled by mea FIAT MAREA 2000 1.G Workshop Manual 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 <fi=2 1 1 15J
GLOW PLUG PREHEATING CONTROL
UNIT
The glow plugs are controlled by mea](/manual-img/10/4653/w960_4653-101.png)
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
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 146 of 330

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
Page 192 of 330

4F006ML01
SIDE LIGHTS AND WARNING LIGHT - DIPPED HEADLAMPS - MAIN BEAM HEADLAMPS AND WARNING LIGHT -NUMBER PLATE LIQHTS (POLYELHPTICAL HEADLAMPS) r »
Component key
1 Left front light cluster
2 Right front light cluster
3 Power fusebox
4 Junction unit:
5 Dipped headlamps relay
6 Instrument panel
7 Stalk unit
8 Left front earth
9 Right front earth
10 Engine battery earth
11 Battery
12 Ignition switch
13 Connection between right/left front cables
14 Left number plate light bulb
15 Right number plate light bulb
16 Left rear light cluster
17 Right rear light cluster
18 Left rear earth
19 Right rear earth
2 Left facia earth
42 Right facia earth
236 Connection between rear cables and tail
gate
310 Connection bridge
Electrical equipment
Component location
Marea-Marea Weekend
2000 range (§)
55.
Left front light cluster
B
'GL70
N8'
1 3 Connection between right/left front cables
•H2A
NZ44
* GV n.d.
70 Connection between dashborad/front cables
A1
— RN 4C
— VG 127
B1 M29
^1 VB 55 | 1242
A3
— V328
11 AG6A
VB 195A | 1581 |B4 GN D
^1 HL 26A 11 AV 4D * I 1581
?! AB 4D"
11 LR 4C f
1581
1242
1Z_ AN4C| 1581
RN 120
VG 120
^1 VB6B
£1 HL120
B1 M n.d.
11 V28A
11 AG 41
11 LB n.d.
21
C2_
21
21
C5
B5 GL"
21 GL n.d.
2L GV13*
11 GV*
!T_ AN 120
B8
C6 GL •
2Z_ GV*J
21 P4F808NO4
236 Connection betwen rear lead and tail-gate
CB 28B
CB 26
* HL 4E
RG 4G
Marea Weekend
(*) The cables involved in the wiring diagram are marked with an asterisk.
6 Print n° 506.763/23
Page 194 of 330

Electrical equipment
Component location
Marea-Marea Weekend
2000 range ©
SIDE LIGHTS AND WARNING LIGHT - DIPPED HEADLAMPS - MAIN BEAM HEADLAMPS AND WARNING LIGHT -NUMBER PLATE LIGHTS
(REFLECTOR HEADLAMPS)
Component key
1 Left front light cluster
2 Right front light cluster
3 Power fusebox
4 Junction unit:
5 Dipped headlamps relay
6 Instrument panel
7 Stalk unit
8 Left front earth
9 Right front earth
10 Engine battery earth
11 Battery
12 Ignition switch
13 Connection between right/left front cables
14 Left number plate light bulb
15 Right number plate light bulb
16 Left rear light cluster
17 Right rear light cluster
18 Left rear earth
19 Right rear earth
22 Left facia earth
42 Right facia earth
236 Connection between rear cables and tail
gate
310 Connection bridge
55.
1 Left front light cluster
*VN 4C
' AV4D
B
AN n.d.
N8 *HN4C N8'
Dipped headlamps relay feed
' HR4F
1 3 Connection between right/left front cables
•H2A
236B Connection betwen rear lead and tail-gate
CB 28B
H4C*
CB 26
Marea Weekend
(*) The cables involved in the wiring diagram are marked with an asterisk.
8 Print n° 506.763/23
Page 196 of 330

FOG LIGHTS - REAR FOG LAMPS
Component key
3 Power fusebox
4 Junction unit:
8 Left front earth
10 Engine battery earth
11 Battery
12 Ignition switch
16 Left rear light cluster
17 Right rear light cluster
18 Left rear earth
19 Right rear earth
22 Left facia earth
28 Connection between facia/rear leads
29 Connection between front/fog lamp leads
30 Left foglamp
31 Right foglamp
32 Fog lights relay
34 Switch control unit
70 Connection between dashborad/front cables
310 Connection bridge
Electrical equipment
Component location
Marea- Ma tea Weekend
2000 range ©
55.
28A Facia/rear lead connection
RN 31 OB RN 31 OA
* H n.d
HG 6B
BR 66
30 Left fog light
31 Right fog light
' M n.d.
* N n.d.
70 Connection between dashborad/front cables
A1 B1 C1 — RN4C — M29* — AN4C A2 B2 C2 — VG127 — V328 — HR 100B A3 B3 C3 — H100B — AG n.d. — HN 100B A4 B4 C4 — HL6A — LN 100B — HG 100B A5 B5 C5 - CB 100A — BN 375 — HV 100B A6 B6 C7 , — S100B — B375 — GV335 JTD A7 B8 C8 F= — V100A — MN n.d. — RB 307 TAXI A8 C8 " N 8 — GN 195A H
A1 — RN 120 A2 — VG120 A3 — H6B A4 — HL120 A5 — CB28A A6 — Rn.d. A7 — A34A A8 — N312
B1 C1 — M 310C* — AN B2 — V28A B3 — AG4I B4 — AB4I B5 — BN 120 B6 — B117 B7 — AN 120 B8 — RN315
C2 — HR C3 — HN C4 — HG C5 — HV C7 — GV C8 — RB C8 — GN
120
28B
28B
28B
28B
6B I JTD
312 TAXI
6Bps|
4F010ML0S
(*) The cables involved in the wiring diagram are marked with an asterisk.
10 Print n° 506.763/23
Page 198 of 330

Electrical system
Component location
Marea- Marea Weekend
2000 range ©
DIRECTION INDICATORS AND WARNING LIGHT (WITH ALARM)
LIGHTS
Component key
1 Left front light cluster
2 Right front light cluster
3 Power fusebox
4 Junction unit
6 Instrument panel
7 Stalk unit
8 Left front earth
9 Right front earth
10 Battery earth on engine
11 Battery
12 Ignition switch
13 Connection between right/left front cables
16 Left tail light cluster
17 Right tail light cluster
18 Left rear earth
19 Right rear earth
HAZARD WARNING LIGHTS - BRAKE LIGHTS (WITH CHECK) - REVERSING
20 Left front side direction indicator
21 Right front side direction indicator
22 Left facia earth
23 Hazard warning light control switch unit
28 Connection between dashborad/rear ca
bles
40 Brake lights control switch
41 Additional brake light
55 Connection between front/engine cables
100 Alarm electronic control unit
107 Door lock remote control receiver
159 Reversing lights control switch
236 Connection between rear cable and tail-gate
310 Connection shunt
55.
Left front light cluster
VN4C
AV4D
B
* AN n.d.
HN4C N8
1 3 Connection between right/left front cables
H2A
23A Hazard warning lights switch unit
'LB 7D
*AB4I
'AR4I
23B Hazard warning lights switch unit
*A4H .
' LR 7C AN 4H'
236 Connection between rear cable and tail-gate
CB28B
CB 26
HL 4E
RG4G
Marea Weekend
"The cables concerned are marked in the wiring diagram with an asterisk
12 XII 00 &jiii!-»cdes OMtfiuii.-. vtrsiun Publication no. 506.763/24