2000 FIAT MAREA Pressure regulator

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 H nD Engine
2000 range (Q) Fuel feed system
10.
1. Grip the outer casing of the regulator, partly
extract it and, at the same time, rotate it so
that the fins (1) which contain the open­
ings for the fixing bolts are positioned hori­
zontally.
NOTA Do not grip the pressure regulator by
the electrical connector.
Insert the blades of two screwdrivers by the
fins (1) and very carefully extract the pressure
regulator.
NOTE Do not use a screwdriver or other
tools in the seal areas between the
regulator and the pressure pump.
2. Pressure regulator
1. High pressure seal (black or green)
2. Anti-extrusion seal (white)
3. Low pressure seal (black)
NOTE // the high pressure seal accidentally
remains inside the pump casing, turn
the ignition key to the ON position
(engine switched off); this will op­
erate the pump shaft and a small
amount of fuel and the seal will come
out.
NOTE Do not, under any circumstances, use any tools for extracting the high pressure seal and this
could damage the inner surface of the pump.
Refitting
- Suction off any impurities present inside the pump casing.
- Check the condition of the three seals and make sure they are correctly positioned before fitting.
- Slightly lubricate the outer surface of the three seals using vaseline. Do not, under any circumstances,
lubricate the other surfaces of the pressure regulator.
- Insert the pressure regulator in its housing on the pump, pressing gently and, at the same time, rotating
the regulator until it is is contact with the surface of the pump.
NOTE Do not, under any circumstances, use a hammer or other tools when fitting the pressure regula­
tor.
- Fit the two bolts fixing the pressure regulator to the pump acsing. and tighten them to a torque of
0.9±0.1 daNm.
- Reconnect the electrical connector and complete the refitting of the remaining components reversing the
order of the operations carried out for the removal.
Copyright by Fiat Auto |& yt-01 - Update 37

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

Marea- Marea Weekend
2000 range ©
Electrical equipment
Connector blocks
55.
336 Injector cyl. 1 (JTD)
RN n.d.
RN n.d.
338 Injector cyl. 3 (JTD)
AR326
Mn.d.
AG n.d.
. R n.d.
337 Injector cyl. 2 (JTD)
S55
SN55
339 Injector cyl. 4 (JTD)
Mn.d
Rn.d.
341 Fuel pressure regulator (JTD)
HB 333B
CB 333B
343 Turbo pressure sensor (JTD)
LR 333B
R326
AG n.d.
342 Fuel pressure sensor (JTD)
344A I.E. protective fuse (JTD)
AR n.d.
RN n.d.
Copyright by Fiat Auto 135

274 Automatic transmission system protective
fuse
276 Starter enablement relay
279 Automatic transmission gear selector
280 ICE/SPORT selector for automatic trans­
mission
281 Shift Lock solenoid
282 Additional PARK cut out for automatic
transmission
283 Safety control unit for automatic transmis­
sion
284 Automatic transmission connection on
gearbox
290 Heater coil (PCT)
291 Potentiometer on accelerator pedal
292 Clutch pedal switch
303 Fuse protecting diesel preheating
304 Diesel preheating protective relay
306 TAXI radio preparation coupling
307 TAXI radio protective fuse
308 Taxi meter protective fuse
309 Taxi meter
31 OA Connection shunt
310B Connection shunt
310C Connection shunt
310D Connection shunt
310E Connection shunt
31 OF Connection shunt
311 Current socket in luggage compartment
312 Coupling for rear/TAXI dashboard cables
313 Current socket relay
314 Right rear door opening switch
315 Current socket fuse
316 TAXI sign light
317 Right rear door relay feed
318 Right rear door control actuator
319 Connection for car phone
320 Aerial feeder
321 Connection for TELEPASS
322 Seat height adjustment connection
323 Seat lumbar adjustment connection
325 Additional heater connection
326 Additional heater control unit
328 Hazard warning lights relay
332 Ignition activated power relay.
333 Injection control unit (JTD)
334 Dual engine temperature sender unit
335 Water in diesel filter sensor
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 Protection fuse ie. (JTD)
345 Fuel temperature sensor (JTD)
346 Additional heater relay
347 Additional heater relay
348 Additional heater remote control swictch
349 Additional heater protective fuse
350 Additional heater sensor
351A Additional heater spark plug
351 B Additional heater spark plug
351 C Additional heater spark plug
352 Left Side Bag connection
353 Right Side Bag connection
354 Air Bag earth
355 Pretensioner connection
356 Left side bag sensor
357 Right Side Bag sensor
358 Left Side Bag
359 Right Side Bag
363 Phase transformer actuator (1998)
364 Motorized throttle body
365 4 stage pressure switch
369 Engine cooling fan remote control switch
373 Air temperature and pressure sensor
375 Standardized diagnostic socket
376 Acceleration sensor
377 Variable geometry solenoid valve
378 Throttle adjustment solenoid valve
379 EGR solenoid
N.A. Ultrasound welding taped in cable loom
Cable colour code
B White
BG Beige
C Orange
G Yellow
H Grey
L Dark blue
M Brown
N Black
R Red
S Pink
V Green
Z Purple