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Home >> Volvo >> 1991 >> 240 SE, AW70L >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Detonation (Knock) Sensor

Detonation (Knock) Sensor

Knock sensor detects knocking and send signal to ignition ECU. ECU is able to gradually retard ignition timing to each individual cylinder. If knocking does not stop, a signal is sent to fuel injection ECU to enrich air/fuel mixture.

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