Hyundai Elantra: Engine Control System / Knock Sensor (KS) Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / Knock Sensor (KS) Repair procedures

Removal

1.	Turn the ignition switch OFF and disconnect the battery negative (-) cable.

2.	Disconnect the knock sensor connector (A).

3.	Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold")

4.	Remove the installation bolt (A), and then remove the sensor from the cylinder block.

Installation

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

Installation is reverse of removal.

Knock sensor installation bolt :

18.6 ~ 23.5 N.m (1.9 ~ 2.4 kgf.m, 13.7 ~ 17.4 lb-ft)

Knock Sensor (KS) Schematic Diagrams

Circuit Diagram ...

Heated Oxygen Sensor (HO2S) Description and Operation

Description Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Catalytic Converter. It varies in accordance with the air/fuel rat ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Description and Operation
Description The changed position of the seat by memorizing into the power seat unit with IMS switch controlling the optimal seat position set by the driver can be restored with the IMS switch. It has the function of prohibiting the restoring action during driving and emergent stopping the l ...

Hyundai Elantra AD (2016-2020) Service Manual: Rear Suspension System
Components and Components Location Components Location 1. Rear shock absorber2. Coil spring3. Torsion beam axle4. Torsion beam axle cover Rear Shock Absorber Components and Components Location Components 1. Shock absorber dust cap2. Lock nut3.Insulator assembly 4. Bumper rubber5. Dust c ...