VARIABLE INTAKE SOLENOID (VIS)

Description and Operation

Description

The variable intake solenoid valve (VIS) is installed on the intake manifold. This VIS valve controls the vacuum modulator, which actuates the valve in the intake manifold. The ECM opens and closes this valve depending on engine operating conditions (see the table below).

Engine Status	VIS valve	Operation
Average Speed	CLOSED	Improves engine performance at low speeds by reducing intake interference into the cylinders
Slow / Fast speed	Open	Minimizes intake resistance by shortening the intake port length and increasing the intake air inlet area

Specifications

Specification

Item	Specification
Coil Resistance ( )	30,0 ~ 35,0 [20 °C]

Circuit Diagrams

Wiring Diagram

(MT)

(B)

Repair Procedures

Inspection

1. 1
   Turn the ignition switch to the OFF position.
2. 2
   Disconnect the VIS valve connector.
3. 3
   Measure the resistance between terminals 1 and 2 of the VIS valve.

   Specification: Refer to "Specifications"

DEPOSIT

1. 1
   Turn the ignition switch to the OFF position and disconnect the negative (-) battery cable.
2. 2
   Disconnect the connector (A) from the variable intake solenoid valve.
3. 3
   Disconnect the vacuum hoses (B) from the valve.
4. 4
   Remove the mounting nut, then remove the balance tank valve.

   

REMEDY

1. To install, perform the removal procedure in reverse order.