Hyundai Palisade: Engine Control System / Knock Sensor (KS)

Hyundai Palisade (LX2) 2020-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Knock Sensor (KS)

Description and operation
Knocking is a phenomenon characterized by undesirable vibration and noise that can cause engine damage. The two Knock Sensors (KS) are installed inside the V-valley of the cylinder block and sense engine knocking.
When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element, and the sensor produces voltage signal to ECM. On receipt of this signal, ECM will control the ignition timing by retarding the ignition timing and then advancing the ignition timing when the knocking disappears.
This sequential control can improve engine power, torque and fuel economy.

Hyundai Palisade. Description and operation

Capacitance (pF)
850 - 1,150
Resistance (MΩ)
3.90 - 5.84

Schematic diagrams
Circuit Diagram

Hyundai Palisade. Schematic diagrams

Harness Connector

Hyundai Palisade. Schematic diagrams

Repair procedures
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
Disconnect the knock sensor connector (A).
[Knock Sensor (Bank 1)]

Hyundai Palisade. Repair procedures

[Knock Sensor (Bank 2)]

Hyundai Palisade. Repair procedures

Remove the intake manifold.
(Refer to Engine Mechanical System - "Intake Manifold")
Remove the mounting bolt (A), and then remove the sensor from the cylinder block.
Knock sensor mounting bolt :
15.7 - 23.5 N.m (1.6 - 2.4 kgf.m, 11.6 - 17.4 lb-ft)
[Knock Sensor (Bank 1)]

Hyundai Palisade. Repair procedures

[Knock Sensor (Bank 2)]

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
Install the component to the specified torque.
Note that internal damage may occur if the component drops. In this case, use it after inspecting.
The sensor connector must be installed parallel to the engine.
Install in the reverse order of removal.

    Camshaft Position Sensor (CMPS)

    Description and operation Description Camshaft Position Sensor (CMPS) is a hall sensor, which detects the camshaft position by using a hall element...

    Heated Oxygen Sensor (HO2S)

    Description and operation Description Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is installed on both upstream and downstream of the Manifold Catalytic Converter (MCC) to detect the air/fuel ratio and send it to the ECM...

    Other information:

    Hyundai Palisade (LX2) 2020-2024 Service Manual: Description and operation

    Function Of Safety Power Window When driver door power window auto-up switch is operated, safety function is activated. 1. Safety function condition When detect the force of 100N (using the 10N/mm spring) during the window rising, window is reversed...

    Hyundai Palisade (LX2) 2020-2024 Owner's Manual: Battery

    WARNING To prevent SERIOUS INJURY or DEATH to you or bystanders, always follow these precautions when working near or handling the battery: Always read and follow instructions carefully when handling a battery. Wear eye protection designed to protect the eyes from acid splashes...


    Manual adjustment

    The front seat can be adjusted by using the levers located on the outside of the seat cushion. Before driving, adjust the seat to the proper position so that you can easily control the steering wheel, foot pedals and controls on the instrument panel.

    Hyundai Palisade. Manual adjustment

    read more

    Copyright © 2024