Kia Sedona: Variable Intake Solenoid (VIS) Valve Description and Operation| Description |

| Engine condition | VIS valve 1 | VIS valve 2 | Operation |
| Intake Manifold | Surge Tank | ||
| Low speed | Closed | Closed | Increasing engine performance in low engine speed by reducing intake interference among cylinders |
| Medium speed | Open or Closed | Open | Increasing intake efficiency |
| High speed | Open | Open | Minimizing intake resistance by shortening intake manifold length and increasing area of air entrance |

Variable Intake Solenoid (VIS) Valve Specifications
Variable Intake Solenoid (VIS) Valve Schematic DiagramsEngine compartment
3.3L GDI
1. Engine coolant reservoir
2. Windshield washer fluid reservoir
3. Radiator cap
4. Fuse box
5. Engine oil filler cap
6. Engine oil dipstick
7. Brake fluid reservoir
8. Battery term ...
Relay Box (Engine Compartment) Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Pull out the relay from the engine compartment relay block.
Power Relay (Type A)
Check for continuity between the terminals. ...