Alfa Romeo 159 Training Material page 98

ENGINE
ELECTRICAL SPECIFICATIONS:
SENSOR FEATURES
OUTPUT SIGNAL TYPE
EASURING METHOD
Knock sensor
FEATURES: This is a directly fitted piezoelectric knock sensor with compact
connector. Two sensors are fitted (one between cylinders 1 and 2 and the other
between cylinders 3 and 4). The sensor detects vibrations caused by mechanical
pressure in the combustion chambers.
Traccia Didattica Alfa 159-en-ridotta
ALFA 159 TRAINING MATERIAL
Nominal specifications:
- Power voltage: 5 V
- Power current 12 mA
Variable voltage according to measured pressure.
Linear characteristic from 0.5 V (0 MPa) to 4.5 V (14 MPa).
The ECU must be powered to pick up the output signal.
Examiner with SAM (Examiner Smart) module is needed to
view the signal, considering its type. Set Examiner as a
voltmeter and acquire the signal for approximately 5 seconds.
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