Wastegate Bypass Regulator Valve N75 - Volkswagen 1.9-Liter TDI Owner's Manual

Engine Management
50

Wastegate Bypass Regulator Valve N75

The engine has a variable turbine geometry
for optimally adapting the charge pressure
to the actual driving conditions.
To regulate the charge pressure, the
vacuum in the vacuum unit for turbocharger
vane adjustment is set depending on the
pulse duty factor.
The Wastegate Bypass Regulator Valve
N75 is activated by the Diesel Direct Fuel
Injection Engine Control Module J248.
Effects of failure
SSP209/075
If the Wastegate Bypass Regulator Valve
N75 fails, the vacuum unit reverts to
atmospheric pressure.
As a result, charge pressure is lower and
engine performance is impaired.