However, there might be a relay involved *indirectly*. The horn's power might be routed through a larger relay controlling other accessories or even the power distribution system. This would not be specifically labeled a "horn relay" but could be responsible for supplying power to the horn circuit.
To find out what's going on with your horn:
1. Check the fuse: Consult your owner's manual to locate the fuse for the horn. Replace it if it's blown.
2. Test the horn relay (if you suspect one): This is difficult without a wiring diagram. You'll need to trace the wiring from the horn switch to identify any relays involved in the circuit. A multimeter will help test for power and continuity. If you find a potential relay, you can temporarily swap it with another relay of the same type (ensure amperage rating is appropriate!) to see if the horn works. *Caution:* Incorrectly swapping relays can cause damage.
3. Inspect the horn itself: Make sure the horn wiring is connected securely and the horn isn't physically damaged. Try tapping the horn lightly while someone else presses the steering wheel horn button. A slight tap may work if it is merely stuck.
Without a wiring diagram specific to your 1999 Chevy Malibu's trim level, pinpointing a specific relay is nearly impossible. A wiring diagram (often available online via repair manuals or forums dedicated to 1999 Malibu's) is the best resource for this.
If you lack the skills or tools to troubleshoot this electrically, taking it to a qualified mechanic is recommended. They have the knowledge and equipment to diagnose the problem safely and efficiently.
