General Information: General Description

The ECM has a barometric pressure sensor built into its inner structure, where it detects the atmospheric pressure at the vehicle's current location. The barometric pressure sensor calculates the density of air (quantity of oxygen) and accurately detects the intake air amount along with intake air sensor and intake air temperature sensor. This achieves the important role of compensating the amount of fuel when driving in elevated areas where a difference in air density (oxygen) exists.