Alfa Romeo 159 Training Material page 171

ENGINE
I
NPUT PARAMETERS
E
LECTRICAL QUANTITY
Overpressure sensor
Voltage to pins A-13 and A-40
Supercharger cut-off
According to this strategy, the supercharger control in certain engine running conditions is inhibited by setting the
allowed supercharger percentage to a preset value.
O
PERATING CONDITIONS
E
LECTRICAL QUANTITY
Cold start
Resistance between pins A-
41 and A-58
Prolonged idling
Frequency to pins A12 - A27
Shifting
Voltage to pins A-42 and A-
44 and on pin B79
Excessive carburetion
Voltage to pins A12 and A27
Traccia Didattica Alfa 159-en-ridotta
ALFA 159 TRAINING MATERIAL
C
ONTROLLER
L
OGIC
EDC-16C39
The ECU processes the signal from
the booster sensor and determines
the amount of fuel to be injected
according to the various engine
operating speeds; specifically, the
ECU:
controls
regulator
adapts injection time
controls
operation.
C
ONTROLLER
L
OGIC
EDC-16C39
The ECU according to engine
temperature, stabilised idling time,
operation of the clutch during air
flow readings and large amounts
of injected fuel opens the EGR
fixed to1%.
171/318
the pressure
VGT valve
Turbo pressure solenoid valve
PWM signal from pin A-60 for
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Fiat Auto S.p.A.
After Sales Training
O
UTPUT PARAMETERS
E
LECTRICAL QUANTITY
Injectors
Voltage to pins:
A-16, A-47; A-2, A-31;
A-1, A-46; A-17, A-33
A-18, A- 48 (5 cylinder)
Pressure regulator
Control voltage between
pins: A-49 and A-19
Turbo pressure solenoid
valve (VGT)
Control from pin 7
O
UTPUT PARAMETERS
E
LECTRICAL QUANTITY
(VGT)
fixed opening 1%