adamthedroog

Where is the horn relay?

DeathCougar

iTrader: (23)

Should be under the hood, not under the dash

adamthedroog

Sorry I forgot to state the year. Would that be true for a 1990?

myyota

If your horn isn`t working check the contact under the steering wheel.

adamthedroog

I did and it's fine. I need to check the relay.

MudHippy

Possibly here...


According to this...http://personal.utulsa.edu/~nathan-b.../2powersou.pdf

Or maybe it's not even shown in the pic above?

adamthedroog

That's what's got me confused the green box is the starter relay but all of the FSMs that I've looked at not only says that that should be the backup relay it doesn't even say where the starter relay should be at all.

myyota

Did you check the horn it self ?. I had the horn on my 86 4Runner go bad,

adamthedroog

I don't know how or why but it's working now. Thanks for all of your help.

Stuwy123

iTrader: (1)

The contact in the steering wheel can be the culprit but also the circuit goes through the actual column.
Blast the bearings on the steering shaft (in the dash) with WD-40 to clean the crud out. My horn slowing died on me, turned out to be crud in the bearings.

Smokintires137

I'm working on the same issue with my 90 4runner. Everything I've found shows a relay attached to that white panel, about half way up. I can see that you have the same setup as mine (no relay clipped on). Did you ever get to the bottom of this? My switch is good, fuse is good, horns are good. No honk. Thanks!

BigBluePile

iTrader: (3)

Well, it's been 10 years so.....


....usually it's the contacts in the steering wheel.

RAD4Runner

Horn Troubleshooting:

https://www.yotatech.com/forums/f116.../#post52381275