Fiat Bravo/Brava

To Next Page

To Previous Page

Bravo-Btava

)JTD

2000 range

Engine

Fuel feed system

DIAGRAM SHOWING INFORMATION FLOW BETWEN THE INJECTION CONTROL UNIT AND

SENSORS/ACTUATORS

Auxiliary fuel pump

Turbocharger wastegate control solenoid

3. Climate control compressor

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.

Tester input

22.

Fuel pressure regulator

23.

Injectors

24.

Throttle valve control solenoid

25.

Glow plug preheating warning light

26.

Injection system failure warning light

Main Page

Summary2
Introduction and Technical Data8
Table of Contents8
Identification Data - Weights9
Bravo-Brava9
Update9
Introduction9
Dimensions10
Capacities12
Performance - Fuel Consumption13
Technical Data14
Engine: Cylinder Head and Valve Gear Components14
Timing Diagrams14
Timing Angles14
Engine: Fuel System15
Integrated Electronic15
Injection/Ignition System Components15
Electrical Equipment: Electronic Injection- Ignition16
Special Tools17
Identification Data21
V.I.N. Plate21
Weights22
Specifications26
Engine: Cylinder Block/Crankcase, Crankshaft and Associated27
Engine: Auxiliary Shaft31
Engine: Cylinder Head and Valve Gear Timing Components35
Lubrication36
Cooling System37
Fuel System37
Electronic Injection System Components38
Engine: Supercharging - Fuel System41
Clutch42
Gearbox and Differential43
Wheels47
Front Suspension49
Coil Springs49
Shock Absorbers49
Anti-Roll Bar49
Rear Suspension50
Electrical System51
Electrical Equipment: Starting53
Electrical Equipment: Recharging54
Electrical Equipment: Electronic Injection/Ignition55
Removing-Refitting58
Engine Index59
Fuel Feed System60
Engine Management System60
Location of Components in Engine Compartment60
Engine Management Control Unit61
Throttle Casing61
Procedure with Diagnostic Equipment62
Timing Sensor62
Exhaust Manifold with Catalytic Converter63
Exhaust Manifold Heat Shield64
Front Lambda Sensor64
Rear Lambda Sensor65
Accelerator Pedal Potentiometer66
Accelerometer on Timing Side Engine Support66
Diagram Showing Engine Exhaust System69
Fuel Anti-Evaporation System70
Location of Diagnostic Socket70
Control of Idle Speed81
Control of Maximum Speed Limitation81
Control of Maximum Torque Limitation81
Control of Coolant Temperature81
Control of Exhaust Fumes82
Control of Exhaust Gas Recirculation82
Control of Air Conditioning System Activation82
Control of Engine Immobiliser82
Control of Cylinder Balance When Idling83
Control of Judder83
Control of Electric Balance83
Control of Turbocharger Wastegate83
Injection System Wiring Diagram85
Compents of Injection System Wiring Diagram86
Electronic Injection Control Unit87
Control Unit Connection Identification (PIN-Out)87
Rpm Sensor89
Air Flow Meter90
Injectors91
Rest Position91
Start of Injection91
End of Injection91
Engine Coolant Temperature Sensor92
Fuel Temperature Sensor92
Fuel Pressure Sensor92
Flow Plug Preheating Control Unit93
Clutch Pedal Switch94
Pressure Relief Sensor94
Atmospheric Pressure Sensor94
Fuel Supply Circuit95
Submerged Fuel Pump Assembly and Level Gauge Control96
Fuel Filter96
Pressure Pump97
Pressure Regulator Sensor97
Multifunction Valve98
Tank Pressurization98
Ventilation98
Delivery Manifold (Rail)98
Inertia Safety Switch99
Inertia Switch Components99
Air Intake Circuit100
Air Intake Circuit Diagram100
Turbocharger102
Emission Control Devices102
Oxidizing CATALYTIC CONVERTER103
Exhaust Gas Recirculation Circuit (Egr)103
Crankcasevapour Recirculation System (Blow-By)104
Electric Egr Valve107
Egr Valve Self-Adjustment Motor108
Egr Valve Heat Exchanger108
Solenoid on Vacuum Tank for Throttle Body Pneumatic Valve110
Vacuum Tank110
Turbo Pressure Control Solenoid111
Pressure Regulator112
Hitachi Integrated Injection/Ignition System115
Injection/Ignition System Operating Diagram116
System Management Strategies119
Management of the Signals119
Management of the Injection120
Control of the Mixture Strength (Feed-Back Control)121
Self-Adjustment121
Starting and Post-Starting122
Operation When Cold122
Operation in Full Load Conditions122
Operation in Acceleration Conditions123
Operation in Deceleration Conditions123
Operation in Cut-Off Conditions123
Management of the Fiat Code Anti-Theft Function124
Rotation Speed Restricter124
Electric Fuel Pump Operation124
Operation of Injectors124
Management of the Ignition125
Starting126
Operation with Engine Idling126
Control of Detonation127
Management of the Engine Idle Control128
Starting Stage128
Engine Started with Accelerator Pedal Released128
Normal Driving128
Management of the Climate Control System129
Management of the Radiator Fans130
Version Without Climate Control130
Version with Climate Control130
Electrical/Electronic Circuit133
Wiring133
Location of System Earth Points133
Hitachi System Wiring Diagram134
Hitachi System Wiring Diagram Key135
System Relays135
Hitachi System Control Unit Pin-Out136
Engine Rpm Sensor138
Operating Principle138
Wiring Connector138
Engine Timing Sensor139
Lambda Sensor141
Butterfly Position Sensor142
Intake Circuit147
Butterfly Casing147
Engine Idle Speed148
Adjustment Actuator148
Fuel Circuit Diagram149
Fuel Drip Tray Assembly150
Electric Fuel Pump150
Fuel Pressure Regulator151
Fuel Manifold152
Exhaust Gas Recirulation System158
Checks, Adjustments and Repair Operations on the Hitachi MPI System159
Checking Emission Concentrations159
Checking Exhaust Concentration of CO and HC160
Checking Engine Idle Speed160
Checking Ignition Advance160
Checks on Fuel Supply Circuit161
Checking Fuel Supply Circuit Pressure161
Draining Fuel Pressure in the Supply Circuit161
Checking Seal of Fuel Supply Pipe162
Checking Injector Seal163
Removing Test Equipment164
Fuel Manifold and Injectors166
Fuel System167
Accelerator Cable168
Removing-Refitting Power Unit170
Replacing Timing Belt189
Engine Cooling System Components (Version with Heater)202
Method of Draining the Circuit203
Method of Refilling the Circuit203
Electrical Equipment226
Passenger Presence Sensor Ppd228
Instrument Panel229
Control Unit Pin out230
System with Side Bag231
Control Unit for Air Bag, Side Bag and Passenger Presence Sensor231
Side Bag Modules233
General Warnings234
Seat with Side Bag and Passenger Presence Sensor235
Location of Deceleration Satellite Sensors236
Removing-Refitting Deceleration Satellite Sensor237
Diagmmatic View of Side Bag Module242
Dismantling Side Bag242
Removing-Refitting Side Bag Module243
Removing-Refitting Front Seat Cushion Cover248
Seat Heater Pad251
Removing-Refitting Backrest Heater Pad251
Removing-Refitting Cushion Heater Pad252
Removing-Refitting Passenger Presence Sensor253
Location of Driver's Seat Components263
Connector Blocks265
Cable Colour Code266
Radio System346
Car Radio347
Radio H3347
Radio M2347
Aerial347
Fuse348
Connections348
Supplementary Connections349
Connector C349
Phone Input349
Remote Control from Steering Wheel (H4 and H3 Versions)349
Anti-Theft Protection350
CODE Card350
Display350
Extended Function Field (EXP Key)350
Radio H4351
Radio M 2357
Operation360
On/Off360
Adjusting Volume and Sound360
Adjusitng Sound360
Volume Ratio BAL (Balance)361
Manual Switching to MONO361
Radio361
Range Selection362
Last Station Memory362
Stereo Reception - FM362
Traffic Information Reception (TP)362
Deactivating AF Function363
Rds off363
Storing RDS Stations/Programmes363
Tuning364
Tuning RDS Stations/Programmes with Automatic Search for Stations364
Recalling Stored RDS Station/Programme364
Manual Frequency Tuning364
Tuning RDS Programmes (IS LEARN) Function365
Starting the Automatic IS LEARN Function365
Programme Types (PTY)365
Programme Types365
Automatic PTY Search366
Storing PTY Programme Keys: Station Selection Keys366
Reactivate PTY Function366
Setting Programme Type366
Expert Control Level367
List of Possible Expert Settings367
Scanning Stored Stations367
Altering Expert Settings368
Turning on EXPERT368
Possible Settings368
Altering the Setting368
Setting Maximum Volume Upon Start-Up369
Setting Minimum Volume for Traffic Information369
Automatic Deactivation by Means of Car Ignition Switch369
LRN Activation/Deactivation369
Suppression of Sound in Case of Incoming/Outgoing Phone Call370
Setting Mobile Phone Input Sensitivity370
Security Code Activation370
Controlling Volume According to Vehicle Speed370
Coding371
Activating the Code371
Checking Code Activation372
Deactivating the Code372
Restoring to Operation372
Compact Disc Player373
Choosing a Track373
Fast Forward to a Track373
Repeating a Track373
Tape Player374
Activating Tape Operation374
Changing the Tape Side374
MSS Function374
Finish MSS before Time375
Concluding Tape Operation375
Fast Forward/Rewind375
Suspending Operation375
Multiple Compact Disc Player376
Filling the Loader376
Inserting the Loader into the CD Player376
Removing the Loader from the CD Player377
CD Player Operation377
Choosing a CD377
Selecting or Repeating a Track377
Repetition of a CD378
Selecting Tracks in a Random Sequence378
Concluding CD Operation378
Reception Conditions378
Compact Disc379
Wiring Diagrams382
Electrical Symbols383
Explanation of How to Read Wiring Diagrams386
Location of Components387
Interconnections388
Components Key388
Junction Unit400
Diagnostic Socket for Inspection System400
Connection between Front Cable/Engine Pre-Wiring400
Diagnostic Socket for Flat Code System400
Components Key470
Power Fuse Box470
A 30A Protective Fuse for Injection System (60A for TD Versions)470
B 40A Protective Fuse for Ignition System470
D SOA Protective Fuse for Junction Unit472
Junction Unit472
Instrument Panel472
Left Front Earth472
Right Front Earth472
Ignition Switch480
Front Right/Left Cables Connection488
Right Rear Earth488
Right Dashboard Earth488
Connection between Front/Engine Pre-Wiring Cables492
Fuel Level Gauge492
A Fuel Level Sensor492
B Electric Fuel Pump492
Switch Signalling Insufficient Engine Oil Pressure492
Diagrammatic Views542
Explanation for Reading Wiring Diagram557
Fault Diagnosis561
Diagnostic Socket Connections)562
Component Location562
Meaning of Codes on Connector Blocks586
Electronic Injection/Ignition659

Fiat Bravo/Brava - Page 84

Table of Contents

Related product manuals