Turbocharger Vacuum Diaphragm, Checking

Special Tools And Workshop Equipment Required 

• Hand Vacuum Pump :VAS6213 

Test Conditions: 

• The hose from the turbocharger must have flow to the vacuum diaphragm via the Wastegate Bypass Regulator Valve -N75-.
• Wastegate Bypass Regulator Valve -N75- OK

Preliminary work may be required depending on the model. Refer to TURBOCHARGER VACUUM DIAPHRAGM, REPLACING .

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Connect the :VAS6213  to the vacuum diaphragm -arrow-.

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-- Set the slide ring -1- on :VAS6213  to position -B- for "pressure".

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-- Operate the :VAS6213  several times and observe the linkage.

The linkage -A- must move approximately 300 mbar (4.35 psi) and be at approximately 700 mbar (10.15 psi) at end position.

The linkage stroke is approximately 10 mm.

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If no fault is found with the :VAS6213  and the connecting hoses:

• In vehicles with a 1.8L engine, replace the vacuum diaphragm. Refer to TURBOCHARGER VACUUM DIAPHRAGM, REPLACING .
• On vehicles with a 2.0L engine, replace the turbocharger. Refer to TURBOCHARGER, REMOVING AND INSTALLING .