Fuel Pressure Control Solenoid: Description and Operation

Fuel Pressure VSV:

PURPOSE
The fuel pressure up VSV is used to raise fuel pressure during hot restart conditions.

LOCATION
The VSV is mounted near the left side fuel rail.

OPERATION
During a hot restart, the ECU energizes the VSV which redirects the vacuum supply for the fuel pressure regulator to the atmosphere. When the vacuum is vented, the fuel pressure regulator raises fuel pressure accordingly.