1. Check the fuse: Locate the horn fuse in the fuse box. It is usually labeled as "horn" or "HORN." If the fuse is blown, replace it with a new fuse of the same amperage.
2. Inspect the horn relay: The horn relay is usually located in the fuse box or in the engine compartment near the fuse box. Check the relay for any damage or corrosion. If the relay is faulty, replace it with a new one.
3. Test the horn switch: The horn switch is located on the steering wheel. Press the horn switch and listen for a clicking sound. If you hear a clicking sound, the horn switch is working properly. If you don't hear a clicking sound, the horn switch may be faulty and needs to be replaced.
4. Check the horn wires: Inspect the horn wires for any damage or corrosion. Make sure the wires are properly connected to the horn and the horn relay. If any of the wires are damaged or disconnected, repair or reconnect them as necessary.
5. Test the horn: Once you have checked the fuse, relay, switch, and wires, you can test the horn by pressing the horn switch. If the horn still does not work, the horn itself may be faulty and needs to be replaced.
If you are unable to fix the horn yourself, you should take your Toyota Echo to a qualified mechanic for further diagnosis and repair.
