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

Hyundai Sonata LF 2014-2019 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.	Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group).

3.	Disconnect the injector connector (A).

4.	Remove the installation bolt (B), 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. If the component has been dropped, inspect before installing.

Install in the reverse order 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 Manifold Catalytic Converter. The sensor output voltage varies in ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
Troubleshooting SymptomSuspect AreaRemedy (Refer to page)Water leaks from panorama sunroofDirt accumulated in drain tubeClear dirt inside of drainClogged drain tubeBlow air into drain to remove dirtBroken or dislocated drain tube, defective or cracked clipCheck tube installation and flange cont ...

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Fuel Pressure Test (Low pressure system) 1. Release the residual pressure in fuel line. (Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line"). When removing the fuel pump fuse, a Diagnostic Trouble Code (DTC) may occur. Dele ...