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Eos (1F7) V6-3.2L (BUB) (2008)

Powertrain Management > Fuel Delivery and Air Induction > Variable Induction System > Variable Induction Control Actuator > Component Information > Testing and Inspection > Intake Manifold Runner Control (IMRC) Valve N316 > Page 3348

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Variable Induction Control Actuator: Testing and Inspection
Intake Manifold Flap Vacuum Actuator, Checking

Intake Manifold Flap Vacuum Actuator, Checking

NOTE:  The test must only be performed if torque loss is present, meaning if there is reduced elasticity or reduced engine torque.

Special tools, testers and auxiliary items required

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Hand vacuum pump VAS 6213 or hand vacuum pump V.A.G 1390

Conditions

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Intake Manifold Tuning (IMT) Valve N156 was checked using Vehicle Diagnosis, Testing and Information System VAS 5051 under "Guided
Fault Finding".

Test Sequence

If Intake Manifold Tuning (IMT) Valve N156 is OK:

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Start engine and let run at idle.

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Have a 2nd person increase engine speed abruptly (press accelerator pedal). Observe variable intake manifold vacuum actuator.
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The actuator must switch.

If change-over does not function as specified:

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Check whether the vacuum system, including the vacuum reservoir in intake manifold, is properly sealed.

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Check whether the change-over mechanism moves easily. Do this by actuating the linkage by hand.

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Check whether vacuum lines are correctly connected.

-

Check that vacuum hoses are not porous.

If no malfunction was found:

-

Remove air filter.

-

Disconnect vacuum hose at vacuum actuator.

-

Connect hand vacuum pump VAS 6213 to vacuum actuator.

Powertrain Management > Fuel Delivery and Air Induction > Variable Induction System > Variable Induction Control Actuator > Component Information > Testing and Inspection > Intake Manifold Runner Control (IMRC) Valve N316 > Page 3348

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