With Manufacturer's Scan Tool

Special tools and equipment







- VAG 139O hand vacuum pump

Test requirement
- Performance deficiency or tip-in shocks

Test sequence


NOTES: The deceleration shut-off valve is located in front of the turbocharger. It is opened by vacuum during deceleration and at idle.







- Connect VAG 1390 hand vacuum pump to vacuum connection for deceleration shutoff valve.
- Operate vacuum pump
Deceleration valve must open (arrow)
- Operate ventilation valve at vacuum pump.
Deceleration shut-off valve must close (arrow)

If deceleration shut-off valve does not open or does not close, replace valve.


NOTES: Secure connections of deceleration valve using screw-type clamps.