Horn starts and stops
#1
Horn starts and stops
04 Ranger 3l auto.
My truck has been parked for a few weeks. The security warning Horn alarm thing ,just started randomly going on and off . Some times the key fob would stop it for a few seconds. Then on again. Had to remove battery cables .
Now what would cause this.
Oh of course it was 2am. My neighbors must love me now.
Any help or info would be great
Thanks
My truck has been parked for a few weeks. The security warning Horn alarm thing ,just started randomly going on and off . Some times the key fob would stop it for a few seconds. Then on again. Had to remove battery cables .
Now what would cause this.
Oh of course it was 2am. My neighbors must love me now.
Any help or info would be great
Thanks
#2
RF Veteran
iTrader: (1)
Welcome to the forum
There is no Alarm system on a 2004 Ranger unless you added one
Horn "chirp" when locking or unlocking is just a confirmation the doors locked or unlocked
If that stops the horn from honking then the horn relay is working so the problem is you have a shorted ground wire in the steering wheel/clock spring or at the SJB(smart junction box)
I would disconnect the horn for now
The horn relay is embedded in the SJB so not a serviceable part, persay
Fuse 13 in the SJB powers the Horn and relay but also power inside lights, so you can also pull out Fuse 13 to disable horn but will lose inside lights
Here is a look at the SJB: https://www.therangerstation.com/tec...horn_mod.shtml
These had a KNOWN ISSUE of getting corrosion inside the large connectors, so I would start there, expose SJB and then remove each connector and look for corrosion inside
What you are looking for here: https://i1.wp.com/sparkys-answers.co...0/DSC09929.jpg
And here: https://i0.wp.com/sparkys-answers.co...0/DSC09930.jpg
The steering wheel has 2 horn buttons inside, either GROUNDS the horn wire that runs back to the SJB, which then ground the Horn relay and horn activates
So any short to ground, in steering wheel, in clock spring, in wire from clock spring to SJB, would activate the horn relay
Also a short IN the SJB for the lock/unlock ground for horn relay would activate the horn relay
So I would start at the SJB since corrosion was a known issue
There is no Alarm system on a 2004 Ranger unless you added one
Horn "chirp" when locking or unlocking is just a confirmation the doors locked or unlocked
If that stops the horn from honking then the horn relay is working so the problem is you have a shorted ground wire in the steering wheel/clock spring or at the SJB(smart junction box)
I would disconnect the horn for now
The horn relay is embedded in the SJB so not a serviceable part, persay
Fuse 13 in the SJB powers the Horn and relay but also power inside lights, so you can also pull out Fuse 13 to disable horn but will lose inside lights
Here is a look at the SJB: https://www.therangerstation.com/tec...horn_mod.shtml
These had a KNOWN ISSUE of getting corrosion inside the large connectors, so I would start there, expose SJB and then remove each connector and look for corrosion inside
What you are looking for here: https://i1.wp.com/sparkys-answers.co...0/DSC09929.jpg
And here: https://i0.wp.com/sparkys-answers.co...0/DSC09930.jpg
The steering wheel has 2 horn buttons inside, either GROUNDS the horn wire that runs back to the SJB, which then ground the Horn relay and horn activates
So any short to ground, in steering wheel, in clock spring, in wire from clock spring to SJB, would activate the horn relay
Also a short IN the SJB for the lock/unlock ground for horn relay would activate the horn relay
So I would start at the SJB since corrosion was a known issue
Thread
Thread Starter
Forum
Replies
Last Post
kshaw
General Technical & Electrical
0
04-04-2014 01:53 PM