Well for starters that's not a light you want on - I believe it means something is wrong with your SRS system. I'd check the fuses first. There is one behind the glove box but I'm not sure which one it is. It could also be something disconnected or shorted, or even a bad clock spring. Start with the easiest thing first. You can also do the code check dance (key in ignition, on, off, on, off, on, off, on and record what codes pop up). Google it probably makes more sense....
Mine would come on and off intermittently, ended up being loose harness behind dash. Just reached up and pressed everything in tight. May work for you??
That both your horn doesn't work and your air bag light is on is a clear indication the problem lies with the coiled up wiring connector module under the steering wheel. That connector is commonly called the clockspring since the wiring for the horn and airbag inside it is coiled up. The wiring is coiled up like a spring so it doesn't snarl/tangle when the steering wheel is turned.
The clockspring's job is to connect the horn button and steering wheel airbag to the rest of the Jeep's wiring harness so if it goes bad, your horn wouldn't work and your airbag light would be on. And if you had cruise control buttons on the steering wheel, cruise control wouldn't work either.
The airbag and the horn seem to be wired into system in a very strange and incestuous way. Here is what I found on my 2004 TJ.
The main airbag warning light was on. I suspected that the clock spring was a very big player in my problem .... but I checked a few things ...
I cleaned the dash harness but it made no difference.
The small bulb in the Passenger Air Bag SWITCH was blown (it is supposed to warn that the passenger air bag is switched off). I replaced the bulb (I believe you can substitute with a resistor). The main warning light went out. Good so far.
But .... I also found that tick-over rpm's were increased to 1500rpm. I removed the horn relay. Rpm's dropped back to normal.
So, no main warning light showing, passenger air bag switch light working when required, no horn. I have no idea if the air bags will actually work in a collision. Some might say I shouldn't drive it unless I am sure ...but I console myself with the fact that earlier Wranglers (that are still being driven) do not even have air bags. Also, my sister-in-law recently totaled her 2006 TJ in a head-on collision - there had never been an issue with warning lights yet the air bags still failed to deploy!
Hope that helps is some small way to put you on the right trail to find the fault(s) in your system.
Erratic engine rpms can happen with a bad clockspring. The horn button circuit can via a bad 'noisy' clock spring connection through the horn rely can cause electrical noise on the circuit which is known to feed back into the PCM/TPS circuit. Pulling the horn relay disrupts that connection.
Thanks guys, sounds like I should look at the clock spring, guess I'll be doin that Sunday, drives me crazy to have lights on that aren't supposed to be on
I have the same problem. I replaced the bulb in the passenger on off airbag switch with one from Radio Shack. It quickly burned out though. What is this telling me??
Thanks for any help!!
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ask a question
Ask a question
Jeep Wrangler Forum
9M posts
468K members
Since 2005
A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models!