|
One possible cause of the problem is the horn relay .... located in the fuse/relay box inside the engine compartment... to your right as you open the hood. There should be a diagram on the under side of the box lid. You might be able to call a local salvage yard and locate a replacement horn relay ... for diagnostic purposes.
If the horn relay is not the problem... then another possible cause is the wire going from the horn switch in the steering column to the horn relay. This wire is shown in the wiring diagram as green with a black stripe. With older high mileage cars, vibration and motion over the years can cause rubbing and chafing of the wires in the steering column area... such that intermittent grounding will occur due to a wire being in contact with a piece of metal .... To investigate this possibility, you would have to remove the inspection panels under the dash, near the steering column, locate the green/black wire, and with the ignition on, move it around ... jiggle it ... hoping to hear some response from the horn. If you don't have any results looking in the steering column area, follow the green/black wire from the fuse box within the engine compartment to the firewall...looking for any possible short circuit.
A third possibility is that there is an electrical short someplace within the actual steering column or the horn switch itself... This would require some disassembly of the steering column in order to inspect the horn switch itself.
How many miles on your car? Do you have any sort of theft deterrent system that might be part of the problem?
__________________
98 Camry LE, 2.2L, automatic
50k miles, drop in K&N A/F
 recent timing belt, water pump
|
95 Camry Horn Fault
When the engine is on, at times (not always) the horn will go off all by itself. While the engine is running, I either have to disconnect the horn to get it to stop or pull the fuse under the hood. I've had it go off at an intersection light and thankfully no one was in front of me. I've had it into the shop and the Toyota Dealer and neither one say they see anything wrong. I never know when it's going to go off. Therefore I am driving around Houston with no horns (I disconnected both) which I predict will be the death of the car when someone backs into me in a parking lot or worse changes lanes on me on the highway. I understand there is a relay which may be in the steering column or horn pad, but I'm reluctant to get into this area due to the air-bag. Anyone have any suggestions?
Linear Mode
