Variable Induction Control Valve: Service and Repair

Acoustic Control Induction System (ACIS):

REMOVAL
1. REMOVE ENGINE COVER
Remove the 4 nuts and engine cover.




2. REMOVE OIL DIPSTICK AND GUIDE FOR A/T
3. REMOVE AIR INTAKE CHAMBER (WITH INTAKE AIR CONTROL VALVE)
a. Disconnect the noise filter connector.
b. Disconnect the engine wire clamp from the bracket.
c. Remove the bolt, bracket and noise filter.




d. Remove the 4 bolts and 2 nuts holding the intake air connector to the air intake chamber,

Torque: 28 Nm (280 kgf.cm, 21 ft.lbf)

e. Disconnect the PS air hose from the air intake chamber.
f. Disconnect the vacuum hose (from No.2 vacuum pipe) from the air intake chamber.
g. Disconnect the vacuum hose (from actuator for ACIS) from the No.1 vacuum pipe.




h. Disconnect the accelerator cable, and remove the bolt and accelerator cable clamp.
i. Disconnect the EVAP hose, and remove the bolt and clamp.




j. Remove the 5 bolts, 2 nuts, air intake chamber and 2 gaskets.

Torque: 28 Nm (280 kgf.cm, 21 ft.lbf)

4. REMOVE VACUUM CONTROL VALVE SET




5. REMOVE VSV FROM VACUUM TANK
a. Disconnect the vacuum hose from port A of the vacuum tank.
b. Remove the screw and VSV.

INSPECTION




1. INSPECT INTAKE AIR CONTROL VALVE
a. With 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum applied to the actuator, check that the actuator rod moves.




If operation is not as specified, turn the adjusting screw.

b. 1 minute after applying the vacuum in (a), check that the actuator rod does not return.




2. INSPECT VACUUM TANK
a. Check that air flows from ports A to B.
b. Check that air does not flow ports B to A.




c. Plug port B with your finger, and apply 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum to port A, and check that there is no change in vacuum after 1 minute.

If operation is not as specified, replace the vacuum tank.

3. INSPECT VSV

INSTALLATION
Installation is in the reverse order of removal.