Alfa Romeo 159 Training Material page 124

ENGINE
I
NPUT PARAMETERS
E
LECTRICAL QUANTITY
Engine speed sensor
Frequency on pins A55 and
A40
Timing sensor 1
voltage on pin A-41
Timing sensor 2
voltage on pin A-56
Air flow meter
Voltage on pin A-12
Engine temperature sensor
Voltage signal on pin A-22
Potentiometer signal on
throttle
Voltage to pins A-25 and A-
10
Idling speed management (also according to battery voltage)
The ECU acknowledges idling when the accelerator pedal is released. The ECU controls idling speed according to
the utilities which are running and the brake-clutch pedal signals. It controls the position of the driven throttle and the
injection time.
Traccia Didattica Alfa 159-en-ridotta
ALFA 159 TRAINING MATERIAL
C
ONTROLLER
L
OGIC
MED 7.6.1
The ECU controls the injectors in
a stratified or stoichiometric way
according to the
temperature, throttle
engine speed and piston position.
124/318
O
E
A-50, A-49; A-47, A-48; A-
32, A-33; A-35, A-34
Voltage disconnect from
pins A-46; A-31; A-01; A-16
engine
position,
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Fiat Auto S.p.A.
After Sales Training
UTPUT PARAMETERS
LECTRICAL QUANTITY
Injectors
Voltage to pins:
Ignition coils