Barometric Pressure Sensor: Description and Operation

Description
- The Pressure Sensor is used in A/T vehicles. It is located in the Engine compartment at the front of the right-hand suspension. It consists of a solenoid which switches between the atmospheric pressure and suction pressure lines and a Pressure Sensor. This arrangement allows either pressure line to be monitored.
- A sensor output signal is sent to the Engine Control Module (ECM) to diagnose the Exhaust Gas Recirculation (EGR) system and Evaporative Emission Control System.
- The Pressure Sensor is not used in M/T vehicles.