With Generic Scan Tool

Vacuum Diaphragm For Wastegate Bypass Regulator Valve, Checking

Recommended special tools and equipment e.g.:
- VAG1526 multimeter or VAG1715 multimeter
- VAG1594 connector test kit

Test requirement
- Engine oil temperature at least 80 degree C.

Test sequence
- Disconnect connector at Wastegate Bypass Regulator Valve -N75-(-1-).







- Start engine and increase speed 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:
- Check Wastegate Bypass Regulator Valve - N75-. (Throughput in hose from turbocharger via valve to vacuum diaphragm with connector disconnected)

If solenoid valve is OK:
- Replace turbocharger, item no 8.