Hyundai Sonata: 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.
1.
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: Specifications
Specification ItemSpecificationPower source3VOperating temperature-30°C ~ +75°C (-22°F ~ +167°F)RF ModulationFSKLF ModulationASKRF frequency433.92 MHzButton number4FunctionDoor lockDoor unlockTailgate unlockPanic ...

Hyundai Sonata LF 2014-2019 Service Manual: Front Oil Seal Repair procedures
Removal and Installation 1. Crankshaft damper pulley. (Refer to Timing System - "Damper Pulley") 2. Remove the front oil seal.     Using the SST (09455-21200), reassemble the timing chain cover oil seal. 3. Install in the reverse order of removal. ...

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