Fiat Bravo Service Manual page 306

Bravo ' g i
20v
98 range
BOSCH M O T R O N I C M E 3.1.4 M.P.I.
I N T E G R A T E D I N J E C T I O N / I G N I T I O N
S Y S T E M
- I n t r o d u c t i o n
- General description of the injection
system
- General description
system
- Injection/ignition system
diagram
- Functions of the system
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
- Adjustment of the injection time
- Adjustment of the ignition advance
- Check on the cold starting
- Check on the enrichment of the mix-
ture during acceleration
- Fuel cut-off during deceleration
- Check on the engine idle speed
- Restriction of the maximum
speed (protection outside of revs)
- Check on combustion through the
Lambda sensor
- Fuel vapour recovery
- Control of the detonation
- Control of the phase transformer
- Check on the inlet manifold
- Self-adjustment of the system
- Autodiagnosis
- Connection w i t h the engine immobilizer
device (Fiat CODE)
- Management of the climate control system
- Management of the radiator fan
A I R I N T A K E C I R C U I T
DIAGRAM SHOWING INFORMATION
E N T E R I N G / L E A V I N G T H E CONTROL
U N I T A N D S E N S O R S / A C T U A T O R S
DIAGRAM SHOWING
C I R C U I T
DIAGRAM SHOWING
VAPORATION C I R C U I T
S Y S T E M F O R R E C I R C U L A T I N G G A S E S
COMING F R O M T H E ENGINE CRANK-
C A S E ( B L O W - B Y )
ENGINE E X H A U S T A S S E M B L Y DIA-
G R A M
I N J E C T I O N / I G N I T I O N
W I R I N G D I A G R A M
- Connection between control unit/igni-
tion coils and injectors
LOCATION O F I N J E C T I O N / I G N I T I O N
S Y S T E M C O M P O N E N T S
Copyright by Fiat Auto
p a y c
1
1
1
of the ignition
1
functional
2
3
4
4
4
4
4
4
5
engine
5
5
6
6
6
6
7
7
7
8
8
8
9
F U E L S U P P L Y
10
F U E L A N T I - E -
11
12
13
S Y S T E M
14
15
16
F U S E S A N D R E L A Y S
D I A G N O S T I C S O C K E T
I N J E C T I O N / I G N I T I O N
S Y S T E M C O M P O N E N T S
- Injection/ignition system wiring
- Injection/ignition electronic
control unit
- Ignition coils
- Timing sensor
- Rpm and TDC sensor
- Detonation sensors
- Electric fuel pump
- Fuel supply manifold
- Injectors
- Accelerator pedal potentiometer
- Brake pedal switch
- Clutch pedal switch
- Air flow meter
- Butterfly casing actuator
- Lambda sensor
- Speedometer sensor
- Phase transformer
- Coolant temperature sensor
- Inertia switch
A N T I - E V A P O R A T I O N S Y S T E M
C O M P O N E N T S
- Charcoal filter and fuel vapour cut out
solenoid valve
C H E C K S / A D J U S T M E N T S
PAIR O P E R A T I O N S ON T H E BOSH M E
3.1 I N J E C T I O N / I G N I T I O N
O U T S I D E O F T H E F A U L T
N O S I S
- Control of the engine idle speed
- Checking concentration of pollutant
emissions
D I A G N O S T I C S
- Detecting faults
- Memorizing the error and structure of
the errors memory
- Classification of the defect
- Frequency counter
- Signalling a fault
- Cancelling the error
- Connector with the diagnostic
equipment
- List of errors
- Parameters displayed
- Active diagnosis
- Recovery
- Permanent memory
E n g i n e
Index
ioT
page
17
18
18
18
18
21
22
23
24
25
25
26
27
27
27
28
29
30
31
32
34
35
36
36
AND R E -
S Y S T E M
D I A G -
37
38
38
40
40
40
40
4 0
40
41
41
41
42
4 2
4 2
42