Kia Carnival (2009+). Instruction — part 257

Fuel System

Engine Control System - Variable Intake

Solenoid Valve (VIS)

Fuel System

2009 > G 2.7 DOHC >

INSPECTION

FUNCTION AND OPERATION PRICIPLE

Variable Intake manifold Solenoid (VIS) valves are installed on surge tank (VIS Valve #1) and intake manifold (VIS
Valve #2). These VIS valve #1 and #2 control vacuum modulators which activate valves in surge tank and intake
manifold. These valves are opened or closed by PCM according to engine condition (Refer to below table).

Engine Condition

VIS Valve #1

(Surge Tank)

VIS Valve #2

(In-manifold)

Operation

Low

Speed

Closed

Closed

Increasing engine performance in low engine speed by
reducing intake interference among cylinders

Medium

Speed

Open

Open or closed

Increasing intake efficiency

High

Speed

Open

Open

Minimizing intake resistance by shortening intake manifold
length and increasing area of air entrance

SPECIFICATION

Item

Specification

Coil Resistance (!)

29.0 ~ 35.0 ! at 20°C (68°F)

CIRCUIT DIAGRAM

COMPONENT INSPECTION

1. Turn ignition switch OFF.

2. Disconnect VIS Valve connector.

3. Measure resistance between VIS Valve #1,2 terminals 1 and 2.

4. Check that the resistance is within the specification.

Specification: Refer to SPECIFICATION.

Fuel System

Engine Control System - Electronic Throttle

System

Fuel System