General Information

Engine

Engine Control - P1560 Knock control SPI check - General Information

Component Location





General Description

Knocking is a phenomenon characterized by undesirable vibration and noise that can cause engine damage. A knock sensor (KS) is mounted on the cylinder block and senses engine knocking. A knocking vibration from the cylinder block is applied as pressure to the piezoelectric element. A knock sensor (KS) detects vibration when RPM rises or drops and generates voltages based on this vibration. The PCM controls the ignition timing based on the amplitude and frequency of the knock sensor signal. For example, if engine knocking occurs, the ignition timing is retarded to prevent it.

DTC Description

Knock sensor signal is inputted to CPU through SPI (Serial Port Interface). By the way, if there is malfunction between SPI and CPU, PCM sets DTC P1560.

DTC Detecting Condition





SPI : Serial Port Interface

Specification





Schematic Diagram





Signal Waveform