The role of the automotive relay is to control the on-off of one circuit to control the intermediate link of the next circuit on-off. In other words, the function of the automotive relay is to control the magnitude and on-off of the current.
The car horn does not ring when the fault causes: ① the battery contact is bad; ② Poor contact of horn relay; ③ horn button damage; ④ loose horn line; ⑤ The horn itself is damaged.
The principle of starting relay and electromagnetic master switch is the same.
Car relay broken symptoms have starter does not turn, starter start weak, starter idling and so on.
