奇瑞qq水温传感器三线怎么区分?

奇瑞QQ308水温传感器的插头3根线乱了怎么接?
2025-03-15 10:52:38
推荐回答(1个)
回答1:

一般的水温里面有两个热敏电阻:一个电阻管的是水温表,一个电阻管的是电脑。
1、一根公用地线(搭铁) 两根信号线 : 一根水温表(5v), 一根给发动机电脑12v。

2、三线水温传感器其实就是热电阻,随着温度的变化,传感器的电阻值也相应的变化,电阻的一端引出一根线,另一端引出两根线,是为了补偿导线电阻对传感器的影响.判断传感器的好坏可以用万用表测两端的电阻来判断传感器的好坏。

水温传感器分为两大类。无论是哪种它的内部结构均为热敏电阻,它的阻值是在275欧姆至6500欧姆之间。而且是温度越低阻值越高,温度越高阻值越低。

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