Variable Induction Control Actuator: Service and Repair

Intake Manifold Flap Assembly Overview

Intake manifold change-over is switched depending on engine speed and Throttle Position (TP).





1 22 Nm

2 Connecting pipe

• From the exhaust gas recirculation cooler => [ (Item 9) Connecting pipe ] Exhaust Gas Recirculation System Components Assembly Overview

3 Gasket

• Replace

4 Intake manifold, upper

• Disassembling and assembling.

5 O-ring

• Replace

6 EGR vacuum regulator solenoid valve (N18)

7 10 Nm

8 O-ring

• Replace

9 Intake manifold flap

• With motor for intake flap (V157)

10 10 Nm

11 Gasket

• Replace

12 Gasket

• Replace

13 Selector shaft

• The selector shaft must not be loaded axially; it could be damaged!

14 Intake manifold, lower

• With shift rod

• Disassembling and assembling.

15 10 Nm

• Observe tightening sequence.

16 22 Nm

17 Bracket

18 10 Nm

19 Vacuum diaphragm

• When pressing the vacuum reservoir actuator on the conical pin on the shift rod, always support the shift of with a suitable wooden shim on the lower part of the intake manifold.

20 Vacuum hose

21 Intake Manifold Tuning (IMT) valve ( N156)

• Connection diagram for vacuum hoses => [ Vacuum Hose Connection Diagram ] Vacuum and Vapor Hose Diagrams.

Intake Manifold Change-Over, Disassembling and Assembling

• To prevent the variable intake manifold from warping, tighten it only in the sequence described.

- Remove the intake manifold change-over.

- Loosen the connecting bolts.

- Separate the upper part and the lower part of the intake manifold; if necessary, tap is lightly with a rubber hammer to loosen the two parts from each other.

- Clean the sealing surface.

- Replace gaskets.

- Assemble the upper and lower parts of the intake manifold and hand-tighten all the connecting bolts.

- Tighten all the connecting bolts to 10 Nm in the sequence shown.





- Install the intake manifold change-over.