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Home >> Volkswagen >> 2004 >> Passat Sedan (3B3) L4-1.8L Turbo (AWM) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Deceleration Shutoff Valve, Checking
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Deceleration Shutoff Valve, Checking




Deceleration Shutoff Valve, Checking

Special tools, testers and auxiliary items required







- Hand Vacuum Pump V.A.G 1390

Test conditions
- Performance deficiency or load change shocks
- Vacuum hoses checked for porosity and kinks.

Test sequence

NOTE: Deceleration shutoff valve is located in front of turbocharger. It is opened by vacuum during deceleration and at idle.







- Check through-flow of vacuum connection on intake manifold - arrow - with the Hand Vacuum Pump V.A.G 1390.
- Remove deceleration shutoff valve.







- Connect Hand Vacuum Pump V.A.G 1390 to vacuum connection of deceleration shutoff valve.
- Operate Hand Vacuum Pump V.A.G 1390.
- Deceleration shut-off valve must open - arrow -.
- Operate ventilation valve at Hand Vacuum Pump V.A.G 1390.
- Deceleration shut-off valve must close - arrow -.
If deceleration shutoff valve does not open or does not close, replace valve.

NOTE: Connections of deceleration shutoff valve are to be fastened with screw-type clamps.
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