Horn does not work

General discussion forum for J30 and M30 owners!
Chillin014
Posts: 75
Joined: Sat May 23, 2009 4:32 pm
Car: Maxima, J30, El camino, Super Beetle

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This doesnt seem to be a common problem, does anyone have any ideas?

It is not the relay, I have replaced that. It is not a fuse either. I can make the horns work by powering them at the relay board, so it must be something upwards of that point.

I also removed the airbag to make sure there was no corrosion, there wasn't.

My security light blinks 24/7 when the car is turned off but I don't think that is related seeing as how when the alarm goes off the horns DO work.

I appreciate the help...


Chillin014
Posts: 75
Joined: Sat May 23, 2009 4:32 pm
Car: Maxima, J30, El camino, Super Beetle

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anybody?/

GerryO
Posts: 974
Joined: Fri Feb 09, 2007 11:47 am
Car: 1993 J30t
Pearl White
Black Interior

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Check for power to and after the relay using a multimeter, while you push the horn button?

The alarm horn and car horn sounds are different.

Chillin014
Posts: 75
Joined: Sat May 23, 2009 4:32 pm
Car: Maxima, J30, El camino, Super Beetle

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sorry for the slow reply but I dont quite understand what you mean before the relay and after. I removed the cover from the relay and forced it to make the necessary connection and the horn works. So I assume the problem is upwards from there, right?

Is there some kind of security module that is common to go bad in these cars?



According to the diagram, the only thing between the horn switch and the relay is some component called "SMU". I guess the switch itself could be bad too possible.

User avatar
Infinitiguy19
Posts: 7787
Joined: Sat Dec 22, 2007 4:58 pm
Car: 1993 Infiniti Q45 188580 Miles
1994 Infiniti Q45a 240000 Miles

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Replace relay and all should be well.


Chillin014
Posts: 75
Joined: Sat May 23, 2009 4:32 pm
Car: Maxima, J30, El camino, Super Beetle

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Paul Wall wrote:Replace relay and all should be well.
read first post.
Chillin014 wrote:It is not the relay, I have replaced that.


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