Passat Sedan L4-2.0L Turbo (CCTA) (2010)
Intake Manifold: Testing and Inspection
Variable Intake Manifold, Checking
Only perform the test if there is a loss of torque. That means elasticity or engine torque is reduced.
Special tools, testers and auxiliary items required
‹› Hand vacuum pump (VAS 6213)
Test Conditions
‹› The intake manifold runner control valve (N316) was checked with the vehicle diagnosis, testing and information system (VAS 5052).
If the intake manifold runner control valve (N316) is OK, perform the following tests:
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Remove the engine cover carefully.
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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 the variable intake manifold vacuum actuator.
‹› The actuator must activate - arrow -.
If change-over does not function as specified:
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Check the vacuum system for leaks.
