Hello, you mean ecu. There are two possibilities that the ecu voltage of Jinbei is too low. One is that the sensor power supply circuit inside the ECU is damaged, which is very unlikely. Second, the positive and negative poles of the external power supply are short-circuited or the positive and negative poles of the internal power supply of the sensor are short-circuited.

ECU(ElectronicControlUnit) electronic control unit, also known as "trip computer" and "vehicle computer". In terms of use, it is a special microcomputer controller for automobiles. Like an ordinary computer, it consists of a microcontroller (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D) and a large-scale integrated circuit such as shaping and driving.