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

Hyundai Tucson (LM) 2010-2015 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 (x)30.0 ~ 35.0 [20°C(68°F)] ...

Other information:

Hyundai Tucson (LM) 2010-2015 Service Manual: Brake Line Repair procedures
Removal 1. Disconnect the brake fiuid level switch connector, and remove the reservoir cap. 2. Remove the brake fluid from the master cylinder reservior with a syringe.     Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the ...

Hyundai Tucson (LM) 2010-2015 Owners Manual: Air bag warning light
This warning light will illuminate for approximately 6 seconds each time you place the ignition switch in the ON position. This light also comes on when the Supplemental Restraint System (SRS) is not working properly. If the AIR BAG warning light does not come on, or continuously remains on ...

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