Alfa Romeo 159 Training Material page 99

ENGINE
The connections to the engine ECU are:
CONNECTION TO ECU
Knock sensor 1
- connector pin 1 to ECU pin 59 side A
- connector pin 2 to ECU pin 44 side A
Knock sensor 2
- connector pin 1 to ECU pin 43 side A
- connector pin 2 to ECU pin 58 side A
REMOVAL/REFITTING: The sensor is fastened on the cylinder block with a screw.
ADDITIONAL INFORMATION The entire surface of the sensor/crankcase must be in contact to ensure correct
transmission of the signal.
POSITION: The knock sensors are positioned on the front side of the engine underneath the intake plenum.
1. Knock sensors
ELECTRICAL SPECIFICATIONS:
SENSOR FEATURES
OUTPUT SIGNAL TYPE
Traccia Didattica Alfa 159-en-ridotta
ALFA 159 TRAINING MATERIAL
CONNECTOR
Piezoelectric knock sensor
Electrical pulse signal
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