Group, I am having a problem with the wifes 02 Expedition. The owners manual isn't clear to me which relay is for the horn. I believe it has gone bad. the cruise stopped working but I don't think it is the clockspring becouse the lights light up on the wheel but not the dash; and when the key is off the horn will blow. ( i can hear the relay inside the RAP module clicking when the key is off but I turn the key on and nothing. no clicking and no horn.) I bought a manual from the parts store which the wiring scematic is useless. I want to sqay I saw in a different maual that the reay uses both sides the de-energized side send to the rap module. anyway.. Does any one know where the relay is or which number? The local ford dealer wouldn't tell, they just said bring it in we we'll fix it!

BTW I did a search but couln't find any info on the location, My 98 F150 is plain as day which relay it is.

 

I'll take a look at my shop manual when I get home.

 

Thank You,

 

There is no horn relay. It's all contained in the CSM (Central Security Module).

The illumination of the switches on the steering wheel use different conductors within the clockspring and cannot be used to determine if the clockspring as a whole is good or not.

Steve

 

any idea why the horn will blow with the ignition off and when I turn the ignition to run it will not?

I checked the continuity of the ignition switch contacts according to my haynes/ chilton manual and it is o.k..

 

Ok Answer me this if they sell a horn relay wouldnt you be able to find it on the expy ?

 

I would sure think so. I guess I'm going to have to break down and buy the full schematic for the truck.

 

If you'll take a moment and read my previous comment, you'll see that there is no discrete horn relay to buy. It is an internal part of the CSM (Anti-theft module).

Bronc, you don't need a full schematic, you need the factory service CD. www.fordcds.com

FWIW, I'd suspect your CSM is at fault.

Steve

 

dup post, plz delete

 

thank you,

 

FYI, I got the letter last week for the cruise control recall, took the truck in, they had to order more parts becouse they said the system was "contaminated". when they replaced the parts my cruise now works again and so does the horn. this was all at no charge for the recall.

 

Hey guys i recently bought an 01 expedition and my horn isnt orking and neither is my cruise control i keep seeing things online about a cruise control switch recall. The speed control switch was under recall and it was completed by the previous owner but im trying to figure out this recall for the cruise control is and also anyboyd has any idea why my horn may not be thanks

 

97 expedition i got...horn doesnt work as well...couple weeks now. i was told theres a fuse. i havent checked but is this correct...fuse on 97? txs in advance

 

The switch is mounted to the front of the brake master cylinder. If the recall was performed, the wiring harness to the switch was replaced and there should be a label on the harness near the switch stating so.

 

Use a test light right at the connection to the horns. Pressing the horn pad on the steering wheel should give you +12v at the horn connection. If it does the horns are no good. If it does not then the next likely culprit is the clock spring being worn out at the steering wheel. Of course you should also check for a blown fuse or a bad horn relay before changing the clock spring.

Also check fuse #7 in the fuse box under the hood, that's for the horn.