BARO / MAP Sensor Switching Valve: Description and Operation

Vacuum/Atmospheric Pressure Sensor and VLC Solenoid:

PURPOSE
Vacuum line control (VLC) solenoid valve switches the source line for the vacuum/pressure sensor.

LOCATION
Attatched to a bracket on the R.F. fender apron.

OPERATION
With no voltage to the solenoid, the sensor monitors intake manifold vacuum. When the solenoid is energized, the sensor measures atmospheric pressure.