Wastegate Bypass Regulator Valve Vacuum Diaphragm, Checking

Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Special tools and equipment
- VAG 1551 scan tool (or VAG 1552 mobile scan tool) with VAG 155113 cable

Test requirement
- Engine oil temperature at least 60 °C.

Test sequence





- Disconnect connector -2- at wastegate bypass regulator valve -N75-.





- Bring engine to maximum RPM by depressing accelerator pedal suddenly. Operating rod -2- for wastegate bypass regulator valve must move.

If operating rod does not move:
- Check lever for wastegate bypass regulator valve -1 - for ease of movement. If rusted solid, replace turbocharger.

If operating rod does not move despite freely moving lever:
- Replace turbocharger See item no.6 in "Turbocharger With Attachments, Removing and Installing". Service and Repair
- Check DTC memory and erase. Refer to "On Board Diagnostic". Testing and Inspection