Loose plug terminals cause the car horn to not sound

The car horn does not sound when the plug terminal is loose. There are three situations when the car horn malfunctions: sometimes it does not sound, the sound is hoarse, and it does not sound at all. In these three situations, we must first consider whether the horn plug terminal is loose, the horn relay contact is ablated, and the horn switch at the steering wheel is in poor contact. The car horn does not sound, which is very inconvenient when driving. Sometimes when the horn is honked, the sound is either mosquito-like or hoarse, and there is no sound at all. The second is the fault of the horn itself: 1. Contact ablation: If you press the horn for a long time, it will easily cause the horn contact to ablate and generate impedance. The current flowing through the electromagnetic coil will weaken, and the electromagnetic attraction will not be able to attract the armature to drive the diaphragm to vibrate normally. Cause the pronunciation to be hoarse or even silent. But when the horn is kept honking, if the instantaneous strong current passes through the impedance, it can still work normally, so it will be good and bad. 2. Lax sealing is easy to be damp: Although the inside of the horn is airtight, if the air is in the mist or there is water vapor in the internal space when washing the car, the water vapor will easily cause the contacts to be damp and not work properly. 3. Poor contact of solenoid coil terminals: Some horns internal solenoid coil enameled wire terminal joints are crimped and connected by aluminum metal rivets, which are not firmly welded. If the insulating paint on the enameled wire of the end is not clean or the rivet crimping is not firm, it is easy to produce The false connection failure causes the speaker to work poorly. This kind of failure is due to the quality of the speaker, which cannot be repaired and can only be replaced with a new one. The car horn is a device that is frequently used while driving. If there are frequent failures during use, it should be eliminated immediately. Tips: 1. Remember to prevent the loudspeaker from getting wet; do not honk the loudspeaker for a long time, which may easily cause premature ablation of the loudspeaker contacts; do not blindly replace the loudspeaker. 2. The car horn does not sound. Check whether the horn plug terminal is loose, the horn relay contact is ablated, and the horn switch at the steering wheel is in poor contact.