Hyundai Elantra (CN7): Exhaust Emission Control System / Catalytic Converter

Hyundai Elantra (CN7) 2021-2026 Service Manual / Emission Control System / Exhaust Emission Control System / Catalytic Converter

Description and operation

Description

The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx).

Repair procedures

Removal

[Catalytic Converter (WCC)]

1.	Remove the exhaust manifold. (Refer to Engine Mechanical System - "Exhaust Manifold")

[Catalytic Converter (UCC)]

1.	Remove the Center Muffler. (Refer to Engine Mechanical System - "Center Muffler")

Installation

1.	Install in the reverse order of removal.

❮Description and operation

DescriptionExhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components.Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system.

CVVT (Continuous Variable Valve Timing) System❯

Description and operation DescriptionContinuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load.

Other information:

Hyundai Elantra (CN7) 2021-2026 Service Manual: Heater & A/C Control Unit (DATC)

Components and components location Components[This illustration shows the LHD type. RHD type is symmetrical.][Connector A] Pin No Function Pin No Function 1Battery9IGN22ILL+ (TAIL)10ISG Battery (+)3-11IGN14LIN BUS12HTD5-13-6-14-7-15-8RHEO (

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