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What do the three wires of the Mazda 3 fan represent?

1 Answers

JayceMarie

07/29/25 4:08pm

CPU fan's red, black, and yellow (or green, etc.) wires generally represent: red is the positive power supply for the fan, black is the negative power supply, following the "red positive, black negative" rule. The additional colored wire is the fan speed detection control line, which adjusts the fan speed according to CPU temperature to achieve optimal cooling. Below is extended content: The main performance of a fan is reflected in the following aspects: speed, fan blade shape, fan blade angle, and bearing system. Typically, the fan speed is specified in the radiator's manual. The radiator's cooling effect is 30% dependent on the fan speed. However, higher fan speed is not always better. The correct fan speed should be determined based on the heat generated by the CPU, and different specifications of fan speeds should be selected accordingly. The basic principle is: under the premise of generating the same air volume, the higher the fan speed, the lower the noise. Generally, speeds between 3500 and 5200 are considered conventional.

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