Hyundai Venue (QX): Engine Control System / Knock Sensor (KS). Description and operation

Hyundai Venue (QX) (2020-2026) Service Manual / Engine Control / Fuel System / Engine Control System / Knock Sensor (KS). Description and operation

Description
Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.
When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. At this time, this sensor transfers the voltage signal higher than the specified value to the ECM and the ECM retards the ignition timing. If the knocking disappears after retarding the ignition timing, the ECM will advance the ignition timing. This sequential control can improve engine power, torque and fuel economy.

Hyundai Venue. Knock Sensor (KS). Description and operation

    Inspection 1. Check signal waveform of CKPS and CMPS using a scan tool. Specification : Refer to "Waveform" Removal    • DON’T remove the camshaft position sensor during engine running or right after engine stops, or a scald by the flowed out engine oil may occur.

    Specification Item Specification Resistance (MΩ) 4.87

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