Boost Solenoid: Description and Operation

Boost Pressure Switch (BPS):

PURPOSE
The Boost Pressure Switch (BPS) sends a signal to the ECA when turbo boost pressure reaches 10.4 - 11.6 psi (71.8 - 79.8 kPa). This signal causes the ECA to cut fuel injection as a way to prevent engine damage from overboost.

LOCATION
Behind the intake plenum.

OPERATION
This is an ON/OFF switch that signals the ECA when the preset pressure is reached.