What does MAP mean in a vehicle?

[LeAaliyah]

In automobiles, MAP stands for the Manifold Absolute Pressure sensor, which is short for Manifold Absolute Pressure. Below is relevant information about MAP: 1. It is used to measure changes in the absolute pressure (vacuum) within the intake manifold and converts this into a voltage signal, which is then transmitted to the Engine Control Unit (ECU). The ECU uses this information to determine the engine load, combined with the engine speed signal, to calculate the appropriate fuel injection quantity. 2. The intake manifold absolute pressure sensing element consists of a silicon chip. A pressure diaphragm is etched onto the silicon chip, which includes a piezoresistive strain gauge that forms a Wheatstone bridge circuit.