Electronic Control Unit ME17.9.11 Engine Control Module 39117-2B700

The ECU electronic control unit functions to calculate, process and judge the information input by the air flow meter and various sensors according to its memory program and data, and then output instructions to provide an electric pulse signal of a certain width to the fuel injector to control the amount of fuel injection. The electronic control unit is composed of microcomputer, input, output and control circuit.

Electronic Control Unit (ECU), also known as "driving computer", "car computer" and so on. In terms of use, it is the automobile special microcomputer controller. Like a normal computer, it consists of a microprocessor (CPU), memory (ROM,, RAM), input / output interface (I / O), analog-to-digital converter (A / D), and large-scale plastic and drive integrated circuits. In a simple word, "The ECU is the brain of a car."

The ECU generally has fault self-diagnosis and protection functions. When the system fails, it can also automatically record the fault code in the RAM and read the alternative procedures from the above inherent procedures to maintain the engine operation. At the same time, these fault information will be displayed on the dashboard and remain immortal, allowing the owner to find the problem in time and drive the car to the repair shop.