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ICFrank
Active Member

United States
27 Posts

Posted - 12/12/2012 :  09:02:45 AM  Show Profile  Visit ICFrank's Homepage  Reply with Quote
I have a 2007 IC bus with a low air warning buzzer that works. However, it is barely audible. I tried a new buzzer - same thing.
I swapped out a dash with a 2006 and bus still does same thing. I do not have Diamond Logic to check anything. Anybody else have this problem or might be able to point me in the right direction as to what to check next?

sob
Senior Member

USA
55 Posts

Posted - 12/12/2012 :  12:07:26 PM  Show Profile  Reply with Quote
Not up on IC's. But, unhook your buzzer if possible, run whatever voltage it is supposed have thru it and see if it changes the volume.
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IBTMech
Top Member

USA
973 Posts

Posted - 12/14/2012 :  6:20:53 PM  Show Profile  Visit IBTMech's Homepage  Reply with Quote
Is it low volume on it's other functions too? Turn signals, Emergency exit open, and No Child left behind? If they're OK, I'd suspect the low air switch.
I just replaced a failed beeper in an '08. 'Spensive lil buggers.

If it doesn't fit, FORCE it.
If it breaks, well, it needed replacing anyway.
Pullin' wrenches for 45 years.

Edited by - IBTMech on 12/14/2012 6:23:47 PM
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sambrutay
Advanced Member

United States
233 Posts

Posted - 12/17/2012 :  05:28:17 AM  Show Profile  Reply with Quote
So when you replace the alarm does it work fo a while and then the sound starts to fade? Thats what happens here. Never found a bad alarm. Audio alarms for your brake system and "NCLB", this has been a long standing problem. All you have to do is disconnect the batteries and the alarm will work again. Give it try. it work for us.

Bruce
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bwest
Administrator

United States
2268 Posts

Posted - 12/17/2012 :  09:54:51 AM  Show Profile  Reply with Quote
Argh! I wish these computer geeks would have left our buses alone. Now we're having to reset our buses like they do their computers. lol I always joke with the tech guy here at school. I tell him if my buses performed the way your computers do we'd never get our kids home. lol His response is "well your buses are not as old as my computers. To that I respond "do you have machines older than 14 years?" Of course the answer is always no. LOL

Bryan
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ICFrank
Active Member

United States
27 Posts

Posted - 12/17/2012 :  10:17:49 AM  Show Profile  Visit ICFrank's Homepage  Reply with Quote
Low volume all the time. If I get a chance I will check the voltage tomorrow. I can't find a wiring diagram for the buzzer anywhere. I'm assuming it should probably be around 5 volts. I'm thinking that the body controller must complete a ground somewhere to make it work. However, I have not found a bad ground on any of the grounding terminals under the dash. (I have had a couple of the alarms on the newer bus quit altogether. Disconnecting and reconnecting the batteries fixed them. Not that lucky on this one.
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Thomasbus24
Administrator

USA
3298 Posts

Posted - 12/17/2012 :  11:47:45 AM  Show Profile  Reply with Quote
quote:
Originally posted by bwest

"do you have machines older than 14 years?"



What he doesn't know is that our 1998 buses will run circles around the new garbage
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