Hyundai Santa Fe (TM): Engine Control System / Knock Sensor (KS). Description and operation

Hyundai Santa Fe (TM) 2019-2023 Service and Repair 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. When a knock occurs, the sensor produces voltage signal. The ECM retards the ignition timing when knocking occurs. 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.

    Inspection 1. Check the signal waveform of the CMPS and CKPS using the diagnostic tool. Specification : Refer to "DTC Diagnostic Guide" 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 Capacitance (pF) 850 - 1,150

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: General safety information and caution

    General Safety Information and Caution 1. Be careful when driving the vehicle using the smart cruise control system as follows. (1) On curves or inclines/declines • The smart cruise control system may have limits

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Description and operation

    Description and operation    The System may be limited when • The radar sensor or camera is blocked with a foreign object or debris.

    Categories

     
    Copyright © 2026 www.hsafe4.com - 0.0183