| Description |

| 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
Variable Intake Solenoid (VIS) Valve SpecificationsHyundai Tucson (LM) 2010-2015 Service Manual: Components and Components Location
Components
1. Sub frame2. Steering gearbox3. Front stabilizer bar4. Front lower arm5. Front axle6. Front strut assembly7. Drive shaft
...
Hyundai Tucson (LM) 2010-2015 Service Manual: Starter Relay Repair procedures
Inspection
1.
Disconnect the battery negative terminal.
2.
Remove the fuse box cover.
3.
Remove the starter relay (A).
4.
Using an ohmmeter, check that there is continuity between each terminal.
TerminalValueMeasure30 - 871Mx or HigherIf there is continuity, replace the relay.
...