Test sequence

Fig 1: Disconnecting Connector At Wastegate Bypass Regulator Valve - N75-

Courtesy of VOLKSWAGEN OF AMERICA, INC.

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

Fig 2: Locating Operating Rod For Wastegate Bypass Regulator Valve

Courtesy of VOLKSWAGEN OF AMERICA, INC.

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
Erase DTC memory of Engine Control Module (ECM) , see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .
Generate readiness code, see READINESS CODE, GENERATING .
Check DTC memory: