Page 257 of 330
Marea-Marea Weekend 
2000 range (§) 
Electrical equipment 
Wiring diagrams 
55. 
STARTING - ELECTRONIC IGNITION AND INJECTION - RECHARGING AND WARNING LIGHT - INSUFFICIENT ENGINE OIL PRESSURE WARNING 
LIGHT- INJECTION SYSTEM FAILURE WARNING ILIGHT - REV COUNTER (1998) 
^—hi 11111 
168 223 
56B 57 18 22 8 167 165A 165 164 163 162 132 292 136A 136 291 376 
Copyright by Fiat Auto 71  
         
        
        
     
        
        Page 258 of 330

Electrical equipment 
Component location 
Marea-Marea Weekend 
2000 range ® 
Starting - Electronic ignition and injection - Recharging and warning light 
light- Injection system failure warning ilight - Rev counter (1998) 
Insufficient engine oil pressure warning 
Component key 
3 Power fusebox 
4 Junction unit 
6 Instrument panel 
8 Left front earth 
10 Engine battery earth 
12 Ignition switch 
18 Left rear earth 
22 Left facia earth 
40 Brake lights control switch 
55 Connection between front/engine cables 
57 Inertia switch 
70 Connection between dashborad/front 
cables 
68 Right door mirror 
70 Connection between dashborad/front 
cables 
127 Connection between front left cable/ca
ble on relay holder bracket 
132 Petrol vapour cut out solenoid valve 
136 Knock sensor 
141A Heated Lambda sensor (upstream of cat.) 
141 B Heated Lambda sensor (downstream of 
cat.) 
143 Alternator 
145 Starter motor 
148 Earth for electronic injection 
150 Injection system relay feed 
151 Relay feed for Lambda sensor, electric 
fuel pump, injectors 
152 Fuse protecting injection system 
162 Injector (1st) 
163 Injector (2nd) 
164 Injector (3rd) 
165 Injector (4th) 
167 Air flow meter 
168 Timing sensor 
184 Ignition coils (2nd) 
185 Ignition coils (3rd) 
186 Ignition coils (4th) 
187 Ignition coils (5th) (1998) 
189 Variable valve timing 
193 I.E. control unit earth 
223 Rpm sensors 
291 Potentiometer on accelerator pedal 
292 Clutch pedal switch 
296 Accelerator control lever potentiometer 
334 Dual engine temperature sender unit 
363 Variable valve timing actuator (998) 
364 Motorized throttle body 
375 Standardized diagnostic socket 
376 Acceleration sensor 
55. 
55 Front/engine lead connection 
1998 
* BV n.d 
MN 127 
' HN 6A 
* AR n.d 
1 27 Connection between front left cable/cable on relay holder bracket 
1998 
A1 R n.d.' 
HL RN 13 
HL BG 190A 
A4 AB 190A 
HL AG 190A 
A6 M3A 
HL MN55 
HL C n.d. * 
J*L MB 4C * 
J*L AN n.d. 
_§§_ MG 190A 
_§£. S 190A 
VN3A 
66 B190A 
_§7_ VG70 
R n.d. 
C2 BN190A 
_2L HL n.d. 
C4_ SG n.d. 
C5 HRn.fi.' 
C6 AR n.d. * 
_5L G 190A 
A1 R n.d. * B4 S365 
HL RN98 B5 VN 98 A3 BV 151 * B6 B365 A4 AB 123 J7_ VG365 J*I 
HL AG 122 B8 R 150 A6 M 124 C2 BN365 A7 MN 124 C3 HL98 A8 Cn.d.* C4 SG 98 B1 MB 151 * C5 HR152A* B2 AN 124 C6 AR 152B * 
B3 MG 124 C7 G 150* 
1 90A Injection/ignition electronic control unit (1998) 
1998 3 GV131 22 GN6A 41 BN 127 57 V 167* 
6 S 127 24 ZB 291 * 44 VB6A* 59 SB 292 * 
7 AN 291 * 25 A n.d* 46 LN6A* 62 AB 127 
"U 8 GN 291 * 27 RN n.d. * 47 Cn.d* 63 H 167* "U 
9 B 127 30 BG 127 * 48 BV n.d * 
13 MG 127 31 G 127* 50 AG 127 
15 RV n.d. * 32 BV n.d * 53 BR 375 * 
16 BV n.d * 35 L6A* 54 MN 167 * 
21 VG376 40 HB 291 * 56 ZN 291 * 
32 16 
49 33 
1 90B Injection/ignition electronic control unit (1998) 
1998 1 G n.d. * 17 V n.d. * 32 V184* 52 L165A* 
2 G 141B* 19 V162* 33 B n.d. * 54 L 136* 
3 G 165* 20 V164* 34 B 141A* 55 L 141 * 
4 G 189* 22 V136* 35 B 163* 58 L364* 
5 G 132* 23 V141A* 36 B363* 59 L223* 
6 G 136A* 24 V364* 38 B 136A*. 60 L141B* 
10 G223* 25 V334* 40 B364* 
14 G 185* 26 V n.d. * 42 B 168* 
15 G 186* 28 V 141B* 49 L n.d. * 
16 G 183* 31 V187* 51 L 168* 
49 33 
* The cables involved in the wiring diagram are marked with an asterisk. 
72 Print n° 506.763/23  
         
        
        
     
        
        Page 259 of 330
Marea-Marea Weekend 
2000 range O 
Electrical equipment 
Wiring diagrams 
55. 
Starting - Electronic injection - Recharging and warning light - Low engine oil pressure warning light - Heater plugs 
warning light - Injection system failure warning light - Fuel preheating (1910 JTD) 
Copyright by Fiat Auto 73  
         
        
        
     
        
        Page 260 of 330

Electrical equipment 
Component location 
Marea-Marea Weekend 
2000 range © 
55. 
Starting - Electronic injection - Recharging and warning light - Low engine oil pressure warning 
warning light - Injection system failure warning light - Fuel preheating (1910 JTD) 
ight - Heater plugs 
Component key 
3 Power fusebox 
4 Junction unit 
6 Instrument panel 
8 Left front earth 
10 Engine battery earth 
12 Ignition switch 
18 Left rear earth 
22 Left facia earth 
40 Brake lights control switch 
55 Front/engine lead connection 
56 Fuel level gauge control unit 
57 Inertia switch 
70 Connection between dashborad/front ca
bles 
127 Connection between front left ca
ble/cable on relay holder bracket 
143 Alternator 
144 Rpm and TDC sensor 
145 Starter motor 
150 Injection system relay feed 
151 Relay feed for Lambda sensor, electric 
fuel pump, injectors 
152 Fuse protecting injection system 
167 Air flow meter (debimeter) 
168 Timing sensor 
193 I.E. control unit earth 
201 Heater plugs control unit 
228 Heater plugs (TD) 
289 Thermal contact (PCT) 
290 Heater coil (PCT) 
291 Potentiometer on accelerator pedal 
292 Clutch pedal switch 
303 Diesel preheating protection fuse 
304 Diesel preheating protection relay 
333 Injection control unit (JTD) 
334 Dual engine temperature sender unit 
336 Injector 1 cyl (JTD) 
337 Injector 2. cyl (JTD) 
338 Injector 3. cyl (JTD) 
339 Injector 4. cyl (JTD) 
341 Fuel pressure regulator (JTD) 
342 Fuel pressure sensor (JTD) 
343 Turbo pressure sensor (JTD) 
344 I.E. protective fuse (JTD) 
334B I.E. protective fuse (JTD) 
345 Fuel temperature sensor (JTD) 
375 Standardized diagnostic socket 
377 Variable geometry solenoid valve 
378 Throttle adjustment solenoid valve 
379 EGR solenoid valve 
333A Injection control unit (JTD) 
JTD 1 N n.d. * 16 BV55* 48 BR 375 76 ZB 291 * 
2 N n.d. * 17 CR 377 * 49 VB6A* 77 GN 291 * 
3 N n.d. * 18 MG 127 51 BN 127 78 ZN 291 * A 4 Rn.d.* 19 AB 127 52 B 127 79 A 291 * 
5 RN n.d. * 20 AG 127 58 CB n.d. * 80 MB 291 * , 
11 GV131 21 LN6A 59 LRn.d. * 81 AN 291 * ' > 
13 SB 150 22 RV201B* 60 S 127 
14 CL6A 24 SN 151 * 61 BL 292 * 1 
15 BG55* 47 Ln.d. * 62 NZ 201B* 
5 43 24 
-o 
T7 
2 62 81 
oooooooooooooooooc oooooooooooooooooc 
oooooooooooooooooc oooooooooooooooooc 
~7 
63 44 
333B Injection control unit (JTD) 
JTD 82 SN55* 92 H342* 103 L168* 120 V337* 
83 S55* 93 LR 343* 104 C 168* 121 MV 338 * 
84 BN 334 * 94 HM 343 * 108 CB 341 * 
85 LN 334 * 95 HN 343 * 109 HB 341 * 
86 G 167* 97 CN 167* 111 MB 55* 
88 NZ167* 99 R144* 114 VB 339 * 
89 HR167* 100 B 144* 117 VN n.d. * 
90 LG 342 * 101 N 144* 118 NVn.d. * 
91 HV 342 * 102 BV168* 119 NL 336 * 
114 
AA 115 117 
116.  
89 97 82 90 
oooooc OOOOOOG OOOOOOO 'OOOOOC 
119113105106 98 
* The cables involved in the wiring diagram are marked with an asterisk. 
74 Print n° 506.763/23  
         
        
        
     
        
        Page 261 of 330
Marea-Marea Weekend 
2000 range © 
Electrical equipment 
Wiring diagrams 
55. 
Automatic transmission - System failure warning light ( 1596 c.a.) 
11 
:t-»4WIII^ 
276 283 
Copyright by Fiat Auto 75  
         
        
        
     
        
        Page 262 of 330

Electrical equipment 
Component location 
Marea-Marea Weekend 
2000 range © 
Automatic transmission - System failure warning light ( 1596 c.a.) 
Component key 
3 Power fusebox 
4 Junction unit 
6 Instrument panel 
8 Left front earth 
10 Engine battery earth 
11 Battery 
12 Ignition switch 
19 Right rear earth 
22 Left facia earth 
35 Connection between dashboard/left front 
door cables 
40 Brake lights control switch 
55 Connection between front/engine cables 
110 Left front door lock 
145 Starter motor 
195 Ignition/injection control unit (1596) 
244 Integrated services control system 
267 Automatic transmission control unit 
268 Connection between automatic transmis
sion/front cables 
269 Connection between automatic transmis
sion/dashboard cables 
270 Connection between automatic transmis
sion/rear cables 
271 Kick-down switch 
272 Ignition switch solenoid 
273 Automatic transmission system protective 
fuse 
274 Automatic transmission system protective 
fuse 
276 Starting enablement relay 
279 Automatic transmission gear selector 
280 ICE/SPORT selector for automatic 
transmission 
281 Shift Lock solenoid 
282 Additional PARK cut out for automatic 
transmission 
283 Safety control unit for automatic trans
mission 
284 Automatic transmission connection on 
gearbox 
375 Standardized diagnostic socket 
55. 
267L Automatic transmission control unit 
*RNn.d , . Nn.d.' HN 284 * *Z269 'V284 
AG 279 * 
N n.d.' 
OS 
VN 284* 
* MB 284 
* C n.d. 
M284 
• BR 286 
BG 268' 
HR 279 * 
* AB 268 HG 284 * 
267R Automatic transmission control unit 
* LN 284 
' HM 280 
* MN 269 
' MB 279 
* S 279. 
GN 252' 
* SN 280. 
L284 / \ V284* 
LR 252 * 
V252* 
268 Connection between automatic transmission/front cables 
B 279 * 
AR 279 * 
*B4D NZ 276 * 
• AR n.d 
' BG 279 AB 279 * BG 195' 
269 Connection between automatic transmission/dashboard cables 
' MN 267R 
The cables involved in the wiring diagram are marked with an asterisk. 
76 Print n° 506.763/23  
         
        
        
     
        
        Page 263 of 330
Marea- Marea Weekend 
2000 range © 
Electrical equipment 
Wiring diagrams 
55. 
Standardized diagnostic socket connections 
11 
jp-H 1111IH-
|1596| 
195 
[JTD | 
333 
1998 it IJ it |r 
190 114 253 
25 
BR 
268 
-BR: 
BR 
AB — -AB 
_j 23 22 
267 
11596 
48 53 
BR BR 
J L 9 •T-
J L i 9 • -T-I B 0 T VG 
NU.BR 
:BR BR—i—BR 
CB 
CB 
VG 
N.D, 
120A 
BN--BN--BN-
117 
95 
LN LN-
LN BV 
1—4—1 
i 11 r 
1—4—1 
i 6 r 
(0) V 
181 100 
R I R 
10 
T 
® AG 
BN 
AG 
3 70 
BN AG 
AG—«—AG-
N.D, 
-NZ 
•LN-
B -
N -
-BR-
-BN-
-BV-
-AB-
-l -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 
N N 
C0) (0) 
8 193 
375 
Copyright by Fiat Auto 77  
         
        
        
     
        
        Page 264 of 330

Electrical equipment 
Component location 
Marea-Matea Weekend 
2000 range © 
STANDARDIZED DIAGNOSTIC SOCKET CONNECTIONS 
COMPONENT KEY 
3 
4 
8 
10 
11 
70 
100 
114 
117 
120A 
181 
190 
193 
195 
253 
267 
268 
333 
375 
Power fusebox 
Junction unit 
Left front earth 
Engine battery earth 
Battery 
Connection between dashborad/front 
cables 
lock brakes A.B.S. 
Alarm electronic control unit 
Air bag electronic contol unit 
Airbag/facia lead connections 
Connection for air conditioning unit ca
bles 
A.B.S. electro-hydraulic control unit 
Injection/ignition electronic control 
(1998) 
I.E. control unti earth 
Injection/ignition electronic control 
(1596) 
Climate control system control unit 
Automatic transmission control unit 
Connection between automatic trans
mission/front cables 
I.E. control unit (JTD) 
Standardized diagnostic socket 
unit 
unit 
55. 
70 Connection between dashborad/front cables 
A1 
A2 RN4C B1 C1 — M29 — AN4C B2 C2 — HR100B C3 AG n.d.* — HN 100B B4 C4 — LN100B — HG100B B5 C5 — CB100A — BN375* — HV 100B A6 B6 C7 — S100B — B375* — GV335 A7 B8 C8 — V100A — MNn.d. — RB 307 A8 C8 — N 8 — GN 195A 
— VG 127 — V 328 A3 B3 — H100B — A4 — HL6A A5 
A1 — RN120 A2 — VG120 A3 — H6B A4 — HL120 A5 — CB28A A6 — Rn.d. A7 — A34A A8 — N312 
B1 C1 — M 310C — AN 120 B2 — V28A B3 — AG4I* B4 — AB4I B5 — BN120" B6 — B117* B7 — AN 120 B8 — RN315 
C2 — HR28B C3 — HN28B C4 — HG28B C5 — HV28B C7 I — GV6B | JTD C8 — RB 312 TAXI C8 —I  — GN6BQ 
9B Connection between front cables/anti-lock brakes A.B.S. 
* LN 375 
BN n.d 
CA3A 
*CN 181 
117 Connection between Air Bag/dashboard cables 
Rn.d. 
375 Standardized diagnostic socket 
*BV100A 
* BN 70 
'LN95 
The cables involved in the wiring diagram are marked with an asterisk. 
78 Print n° 506.763/23