Variable Induction Control Valve: Service and Repair

Acoustic Control Induction System (ACIS) Part 1:

Acoustic Control Induction System (ACIS) Part 2:

Acoustic Control Induction System (ACIS) Part 3:

Acoustic Control Induction System (ACIS) Part 4:

REMOVAL
1. REMOVE V-BANK COVER
2. REMOVE AIR CLEANER INLET AND INTAKE AIR CONNECTOR
3. DISCONNECT THROTTLE BODY FROM INTAKE MANIFOLD
a. Disconnect the connector from the throttle body.
b. Disconnect the water hose from the throttle body.
c. Disconnect the PCV hose from the throttle body.




d. Remove the 2 bolts and 2 nuts, and disconnect the throttle body.
e. Remove the gasket.

4. REMOVE INTAKE MANIFOLD ASSEMBLY




5. REMOVE ACTUATOR
a. Disconnect the vacuum hose from the actuator.
b. Remove the 3 nuts, actuator and gasket.




6. REMOVE UPPER INTAKE MANIFOLD
Remove the 3 nuts, 15 bolts, upper intake manifold and gasket.




7. REMOVE INTAKE AIR CONTROL VALVE
Remove the 6 bolts and intake air control valve

INSPECTION
1. INSPECT INTAKE AIR CONTROL VALVE
a. Install the air control valve and actuator to the upper in-take manifold.




b. With 39.9 kPa (300 mmHg, 11.8 in.Hg) of vacuum applied to the actuator, check that the actuator rod moves.
c. One minute after applying the vacuum in (a), check that the actuator rod does not return.
If the operation is not as specified, replace the intake air control valve actuator.

2. INSPECT VACUUM TANK
a. Remove the vacuum tank.




b. Check that air does not flow from port B to port A.
c. Check that air flows from port A to port B.




d. Plug port B with your finger, and apply 39.9 kPa (300 mmHg, 11.8 in.Hg) of vacuum to port A, and check that there is no change is vacuum after one minute.

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

e. Reinstall the vacuum tank.

3. INSPECT VSV

INSTALLATION




1. INSTALL INTAKE AIR CONTROL VALVE
Install the intake air control valve to the upper intake manifold with the 6 bolts.

Torque: 8.5 Nm (85 kgf.cm, 75 in.lbf)




2. INSTALL UPPER INTAKE MANIFOLD
a. Place a new gasket on the lower intake manifold.
b. Install the upper intake manifold with the 3 nuts and 15 bolts.

Torque: 18 Nm (185 kgf.cm, 13 ft.lbf)

HINT: Each bolt length is indicated in the illustration.

Bolt length:
30 mm (1.18 in.) for A
20 mm (0.79 in.) for others




3. INSTALL ACTUATOR
a. Place a new gasket to the upper intake manifold.
b. Install the actuator to the upper intake manifold with the 3 nuts.

Torque: 8.5 Nm (85 kgf.cm, 75 in.lbf)

c. Connect the vacuum hose to the actuator.

HINT: Pass the vacuum hose under the fuel pipe.

4. INSTALL INTAKE MANIFOLD ASSEMBLY
5. CONNECT THROTTLE BODY
a. Place a new gasket to the intake manifold.




b. Connect the throttle body with the 2 bolts and 2 nuts.

Torque: 18 Nm (185 kgf.cm, 13 ft.lbf)

c. Connect the connector to the throttle body.
d. Connect the water hose to the throttle body.
e. Connect the PCV hose to the throttle body.

6. CHECK FOR FUEL LEAKS
7. INSTALL INTAKE AIR CONNECTOR, AIR CLEANER INLET AND BATTERY CLAMP COVER
8. INSTALL V-BANK COVER