Hyundai Accent (HC): Engine Control System / Variable Intake Solenoid (VIS) Valve

Hyundai Accent (HC) (2017 - 2022) Service Manual / Engine Control / Fuel System / Engine Control System / Variable Intake Solenoid (VIS) Valve

- 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 conditionVIS valveOperation
Medium speedClosedIncreasing engine performance in low engine speed by reducing intake interference among cylinders
Low / High speedOpenMinimizing intake resistance by shortening intake manifold length and increasing area of air entrance

- Specification
ItemSpecification
Coil resistance (Ω)30.0 ~ 35.0 [20°C (68°F)]

- Circuit Diagram [M/T]

Harness Connector

[A/T]

Harness Connector

- Inspection

1.Turn the ignition switch OFF.

2.Disconnect the VIS valve connector.

3.Measure resistance between VIS valve terminals 1 and 2.

Specification : Refer to "Specification"

- Removal

1.Turn the ignition switch OFF and disconnect the battery negative (-) cable.

2.Disconnect the VIS valve connector (A).

3.Disconnect the vacuum hoses (B) from the valve.

4.Remove the installation bolts, and then remove the VIS valve (A) from the surge tank.

Variable intake solenoid valve installtion bolt :9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

- Installation

   

• Install the component with the specified torques.

• Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

   

• Be careful of foreign material not to flow into the valve.

1.Install in the reverse order of removal.

Variable Force Solenoid (VFS)

Electric EGR Control Valve

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: MDPS Motor

- Replacement 1.Disconnect the battery negative cable and wait for at least three minutes before beginning work. 2.Put a flat tool (Ø4mm) into a guide hole located in the bottom of steering wheel and press a spring.     • When put a tool into a hole, make sure not to damage an airbag cusion by a tool. 3.Turn a steering wheel anti-clockwise, so make a guide hole (A) shown on the rightside.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Rear Seat Back Cover

- Component Location 1. Rear seat back cover [LH] 2. Rear seat back cover [RH] - Replacement     Put on gloves to protect your hands.     • Use a plastic panel removal tool to remove interior trim pieces without marring the surface. • Be careful not to bend or scratch the trim and panels. [LH] 1.

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