Fiat 1995 Brava, Service Manual

Page: 351 / 544

Bravo
ft 2 *
E n g i n e
Index
BOSCH MOTRONIC M 2.10.4 M.P.I.
INTEGRATED INJECTION/IGNITION
S Y S T E M 1
- Introduction 1
- General description of the injection
system 1
- General description of the •• ignition
system 1
- System functions 2
S Y S T E M M A N A G E M E N T S T R A T E G I E S 3
- Adjustment of the injection times 3
- Adjustments of the ignition advances 3
- Checking cold starting 3
- Checking acceleration enrichment 3
- Fuel cut off during deceleration
(Cut-off) 3
- Checking engine idle speed management 4
- Limiting maximum number of revs (pro-
tection outside of revs) 4
- Cheeking combustion via the Lambda sensor4
- Fuel vapour recovery . 5
- Checking detonation * 5
- Checking phase transformer 5
- Connection to climate control system 5
- System self-adjustment '• • 5
- Connection wim engine starting immo-
bilizing device (Fiat C O D E ) 6
- Autodiagnosis 6
Diagram showing information enter-
ing/leaving control unit and injection/ig-
nition s y s t e m sensors/actuators 7
Diagram showing fuel supply circuit 8
Diagram showing air intake circuit 9
Diagram showing fuel anti-evaporation
circuit 10
System for recirculating gases coming
from the engine crankcase 11
Diagram showing engine exhaust
assembly 12
Location of injection/ignition system
components 13
Wiring diagram showing injection/igni-
tion s y s t e m 14
Connection of control unit/ignition coils
and injectors ^ 15
F U S E S , RELAYS AND EARTH
" P O I N T S 16
INJECTION/IGNITION SYSTEM COM-
P O N E N T S 17
- I n j e c t i o n / i g n i t k M i system wiring 17
- Injection/ignitaon. system electronic
control unit 17
10.
- Ignition coils
19
- Timing sensor 21
- Rpm and T D C sensor 22
- Detonation sensors
23
- Electric fuel pump . 24
- Fuel filter 25
.-: Fuel supply manifold and pressure
regulator 25
- Injectors 26
- Butterfly casing
%
27
- Butterfly valve position sensor 28
- Engine idle speed actuator 29
- Air temperature sensor 30
- Flow meter
30
- Coolant temperature sensor
32
- Speedometer sensor 33
- Phase transformer '
33
- Lambda sensor 35
- Charcoal filter and fuel vapour cut put
solenoid valve
36
- Inertia switch 37
- Multi'-purpose valve and safety and
ventilation valve
38
CHECKS/ADJUSTMENTS AND REPAIR
OPERATIONS TO BOSCH MOTRONIC M
2.10.4 INJECTION/IGNITION SYSTEM
APART FROM FAULT DIAGNOSIS WITH
T H E F I A T / L A N C I A T E S T E R 38
- Adjustment of accelerator control
cable 38
- Removing-refitting fuel manifold com-
plete with injectors and pressure regu-
lator . 39
- Checks on fuel supply circuit - 40¬
- Checking engine idle speed 42
- Checking concentration of pollutant
emissions 42
D I A G N O S I S 43
- Detecting problems 43
- Memorizing the error and structure of
the errors memory . 43
- Classification of the defect 43
- Frequency counter 43
- Signalling the problem 43
- Cancelling the error 44
- Fault diagnosis with the Fiat/
Lancia Tester 44
- List of errors » 44
- Parameters displayed 45
- Active diagnosis ' 45
- Recovery 45
- Permanent memory 45
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