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

Hyundai Ioniq (AE) 2017-2025 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 Engine Mechanical System - "Intake Manifold")

3.	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. 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

C..

Heated Oxygen Sensor (HO2S). Description and operation

DescriptionHeated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Front Bumper Cover. Components and components location

C..

Hyundai Ioniq (AE) 2017-2025 Service Manual: Power Relay Assembly (PRA). Description and operation

DescriptionThe Power Relay Assembly (PRA) consists of the positive and negative main relays, pre-charge relay, pre-charge resistor and battery current sensor. It is located inside the battery pack assembly and controls the high voltage power circuit between the high voltage battery and inverter by the control signal of BMS ECU...