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Home >> BMW >> 2012 >> X1 >> Repair and Diagnosis >> External Pages >> Different car >> Section 845 (Functional Descriptions - F25 - Cooling System, Engine Performance) >> Engine Performance - Functional Description >> Knock control >> System overview
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System overview

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The following graphic shows the system overview of the knock control with the engine N55:

Fig 1: Knock Sensor - Circuit Diagram
G09909201Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 Digital engine electronics (DME)
2 Knock sensor (cylinders 1 through 3)
3 Knock sensor (cylinders 4 through 6)
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