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: Sunroof Assembly Repair procedures
Replacement • When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. • Put on glove to protect your hands. 1. Remove the roof trim. (Refer to Roof Trim - "Roof Trim Assembly") 2. ...

Hyundai Elantra AD (2016-2020) Service Manual: Power Window Switch Repair procedures
Inspection [Driver Power Window Switch] 1. Disconnect the negative (-) battery terminal. 2. Remove the driver door trim. (Refer to Body - "Front Door Trim") 3. Disconnect the power mirror switch connector from the door trim. 4. Check for continuity between the terminals in each swi ...