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This is a Manifold Absolute Pressure (MAP) sensor, an electronic device used in internal combustion engines to measure the pressure in the intake manifold. It provides data to the engine control module (ECM) to determine air-fuel ratio and ignition timing.
Key features and functions include:
Measures air density: It measures the density of air in the manifold.
Provides instantaneous pressure information: It sends real-time data to the engine's electronic control unit (ECU).
Determines engine load: It informs the ECM about the engine load.
Assists in fuel injection calculation: It helps calculate fuel injection for optimal air-fuel ratio.
Detects leaks: It can be used to detect leaks in the inlet manifold.
Acts as a barometric pressure sensor: It provides a barometric reading to help determine air density before the engine starts.
Pinout Configuration:
Pin 1: MDP Signal
Pin 2: Ground
Pin 3: 5 Volts
A faulty MAP sensor can cause engine performance issues like misfiring, rough running, and stalling, and may activate the check engine light.