Hyundai Elantra: Engine Control System / Variable Intake Solenoid (VIS) Valve Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / Variable Intake Solenoid (VIS) Valve Description and Operation

Description

Variable Intake manifold Solenoid (VIS) valve is installed on the intake manifold. The VIS valve controls the vacuum modulator which activates a valve in the intake manifold. The ECM opens or closes this valve according to engine condition (Refer to below table).

Engine condition	VIS valve	Operation
Medium speed	Closed	Increasing engine performance in low engine speed by reducing intake interference among cylinders
Low / High speed	Open	Minimizing intake resistance by shortening intake manifold length and increasing area of air entrance

CVVT Oil Control Valve (OCV) Repair procedures

Inspection 1. Turn the ignition switch OFF. 2. Disconnect the OCV connector. 3. Measure resistance between the OCV terminals 1 and 2. 4. Check that the resistance is within the specifi ...

Variable Intake Solenoid (VIS) Valve Specifications

Specification ItemSpecificationCoil resistance (?)30.0 ~ 35.0 [20°C(68°F)] ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: On-board Refueling Vapor Recovery (ORVR) valve Repair procedures
Removal 1. Turn the ignition switch OFF, and then remove battery (-) cable. 2. Remove the fuel pump. (Refer to Fuel System - "Fuel Pump") 3. Remove the ORVR (A) after releasing hooks (B). Installation 1. Installation is the reverse of removal. ...

Hyundai Elantra AD (2016-2020) Service Manual: Drive Belt Tensioner Components and Components Location
Components 1. Drive belt tensioner ...