Mack Mechanic Posted February 24, 2012 Share Posted February 24, 2012 I am having issues with the low air buzzer not working. The buzzer comes on when you first turn the key on but will not warn you of low air pressure. The low air light light comes on and works just fine. I'm thinking there is an issue with the circuit in the dash. Anyone have this problem? Thanks. Quote Link to comment Share on other sites More sharing options...
lucerne tractor Posted February 24, 2012 Share Posted February 24, 2012 ground? Quote Link to comment Share on other sites More sharing options...
mackboss Posted February 25, 2012 Share Posted February 25, 2012 I just replaced the printed circuit board on the back of the dash cluster for the same reason because of a bad diode for the low air buzzer. Quote Link to comment Share on other sites More sharing options...
Rob Posted February 25, 2012 Share Posted February 25, 2012 I just replaced the printed circuit board on the back of the dash cluster for the same reason because of a bad diode for the low air buzzer.Clamp circuit was allowed to float.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment Share on other sites More sharing options...
billythekid Posted February 25, 2012 Share Posted February 25, 2012 Is it a plastic one or is it a metal one Mack mechanic? Quote Link to comment Share on other sites More sharing options...
Mack Mechanic Posted March 13, 2012 Author Share Posted March 13, 2012 I think it's a plastic board. Thanks for the replies. Quote Link to comment Share on other sites More sharing options...
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