What Causes the ECU Fuse to Blow Immediately After Insertion?

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This is a short circuit phenomenon. Disconnect the computer and then reinsert the fuse. If it still blows, it indicates a wiring issue. If it doesn't blow, then the computer needs to be inspected and repaired. Below are detailed introductions to the ECU: 1. ECU Introduction: The ECU, or Electronic Control Unit, is similar to an ordinary computer, composed of a microprocessor (CPU), memory (RAM, ROM), drivers, and other large-scale integrated circuits. It is also known as the 'vehicle computer' or 'on-board computer.' The ECU acts like the brain of the car, controlling the engine's power output values. 2. ECU Tuning Methods: Flash tuning involves retaining the original ECU hardware and writing a new operating management program into the ECU, altering the factory settings. Flash tuning is also referred to as ECU remapping, commonly known as 'flashing' in layman's terms. Parameters such as engine horsepower and torque can be adjusted. Flash tuning modifies the ECU by reassembling the program, and since the ECU controls the engine's power output, this achieves the goal of enhancing performance. Although this modification method is limited by the original ECU and sensors, resulting in a relatively smaller adjustable range, it does not compromise other factory functions and offers greater stability and safety.