Manifold Absolute Pressure (Map) Sensor: Description
WARNING: This page is about a different car, the 2004 Kia Amanti. However, it is still accessible from the selected car via links, so may be relevant.
The Manifold Absolute Pressure (MAP) Sensor converts intake manifold pressure into a voltage signal. ECU uses this signal to determine the condition of the Exhaust Gas Recirculation (EGR).