The sound signal, although it now does not have its former right to vote, is still extremely necessary in difficult traffic and especially critical situations. Due to the fact that you can not use the sound signal for a long time, you do not notice when and why it stopped making sound at all or began to make a weak sound. You can imagine the state of the driver, if at the right time the sound signal is silent. What are the reasons why this happens? The fuse is blown, the switch does not work or sticks, and, finally, the signal itself is damaged.
On all models of VAZ cars, except for the car VAZ-2105, the horn circuit protects the No. 1 fuse (16A). If the fuse is blown, the cause must be determined. Multiple circuits should be checked as fuse #1 «serves» also ceiling lamps for internal lighting of the body, a power socket, a cigarette lighter, stop lamps, lights for signaling open front doors and hours (the last two chains - for car models VAZ-2103 and VAZ-2106). The situation is simpler with the VAZ-2105 car. Fuse #7 (16A) only protects the audio signal circuit.
To detect a malfunction, it is necessary to check the reliability of the wire connection, the condition of the switch contacts. If necessary, the contacts must be cleaned.
«Voice» sound signal is adjusted by screw 5 (pic. 72). The screw is rotated in one direction or another until the signal tone becomes clear. It happens that by adjusting it is not possible to achieve normal strength and purity of sound, and then the sound signal is removed, disassembled and cleaned contacts 2 and 3.
When assembling, it is imperative to install the previous gasket between the membrane 1 and the signal housing 4 so as not to disturb the gap of 1.15±0.05 mm between the core 6 and the armature 7.