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04-17-2017, 08:34 AM
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#1
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Mini-Skoolie
Join Date: Apr 2016
Location: Arizona
Posts: 36
Coachwork: Bluebird
Chassis: Intl 3800
Engine: DT-466E
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Unmarked yellow light next to dash
To the left of the main dash cluster there is an unmarked yellow indicator light that is only illuminated when I press on the brake pedal. My rig is a 2001 International/Bluebird with air brakes. The brakes seem to be pressurized properly at about 120 psi on the gauge, and the buzzer isn't going off. Not sure what this is, haven't been able to find much via Google searches.
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04-20-2017, 01:23 PM
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#2
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Mini-Skoolie
Join Date: Dec 2014
Location: Boston, MA
Posts: 30
Year: 1995
Coachwork: Thomas
Engine: T444e
Rated Cap: 65
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Do you have any pictures?
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04-20-2017, 01:30 PM
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#3
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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Just a shot in the dark here but could it be an abs thing?
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04-20-2017, 02:54 PM
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#4
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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don't know if this helps, but I have a light that comes on when I step on the pedal... I noticed it the first time I drove the bus. according to the salesman and a bus mechanic (not from the dealership lol) in transit style busses they often have a light to indicate when the brake pedal activates the brake lights.
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04-24-2017, 08:42 AM
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#5
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Mini-Skoolie
Join Date: Apr 2016
Location: Arizona
Posts: 36
Coachwork: Bluebird
Chassis: Intl 3800
Engine: DT-466E
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Picture attached, I have my foot on the brake pedal.
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04-24-2017, 09:28 AM
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#6
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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Service Manuals for Blue Bird School Buses
you can try looking through the manual. it may be in there.
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04-24-2017, 10:03 AM
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#7
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Mini-Skoolie
Join Date: Apr 2016
Location: Arizona
Posts: 36
Coachwork: Bluebird
Chassis: Intl 3800
Engine: DT-466E
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Quote:
Originally Posted by Njsurf73
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That's a great resource, thanks! Haven't found anything yet, I wonder if this is the old style burnt out brake light indicator?
Also, do any buses have has a worn out brake pad sensor/indicator ?
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04-24-2017, 11:14 AM
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#8
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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I can't figure out the purpose of that light either. You certainly don't need a light to tell you if the brakes are working. Does your bus have one of the external light monitors? It could be a mechanic's version of a light monitor.
__________________
Robin
Nobody's Business
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04-24-2017, 11:25 AM
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#9
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Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,830
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
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brake switch failures are common on school busses.. they may have had issues and put that light in... Ive never seen one as a stocker on a bus...
-Christopher
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04-24-2017, 12:02 PM
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#10
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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I'm not understanding that very well. If I'm driving a bus down the road and the brakes don't work, I'm not going to check the yellow light to confirm I have no working brakes. Could it just be a mechanic's version of the exterior light monitor to confirm brake lights?
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Robin
Nobody's Business
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04-24-2017, 01:00 PM
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#11
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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You have an international dash? My bus has the Bluebird dash. They have the tail light indicator on the dash... Maybe someone added it. See if the wires go down to the brake pedal where the switch for the brake lights is.
Sent from my XT1254 using Tapatalk
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04-24-2017, 01:11 PM
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#12
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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My BlueBird has a Chevy S-10 dash.
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Robin
Nobody's Business
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04-24-2017, 02:21 PM
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#13
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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Quote:
Originally Posted by Robin97396
My BlueBird has a Chevy S-10 dash.
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Air brakes?
Sent from my XT1254 using Tapatalk
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04-24-2017, 02:41 PM
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#14
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Bus Geek
Join Date: Feb 2016
Location: Willamina, Oregon
Posts: 6,409
Coachwork: 97 Bluebird TC1000 5.9
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Yup. Very manly air brakes like real trucks have.
__________________
Robin
Nobody's Business
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04-24-2017, 04:02 PM
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#15
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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Quote:
Originally Posted by Robin97396
Yup. Very manly air brakes like real trucks have.
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I am pretty sure it's a brake light indicator. I don't know why, but they seem to be on quite a few busses. You should trace the wires, just to make sure. I bet they go straight to the pedal switch.
Sent from my XT1254 using Tapatalk
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04-24-2017, 04:59 PM
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#16
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Bus Geek
Join Date: May 2016
Location: Eastern WA
Posts: 6,401
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
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My '02 Bluebird has a "service brake indicator" that comes on whenever the brakes are applied.
I had the same question and finally found the answer in the operators manual online.
To be clear. Mine also has an "ABS Fault" light and it is red.
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04-24-2017, 05:04 PM
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#17
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Bus Crazy
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
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Quote:
Originally Posted by PNW_Steve
My '02 Bluebird has a "service brake indicator" that comes on whenever the brakes are applied.
I had the same question and finally found the answer in the operators manual online.
To be clear. Mine also has an "ABS Fault" light and it is red.
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My abs fault light is yellow. And my service brake indicator is red.
Both are on my dashboard.
Sent from my XT1254 using Tapatalk
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01-29-2020, 10:25 PM
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#18
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Almost There
Join Date: Aug 2018
Location: Arkansas Ozark Foothills
Posts: 82
Year: 2002
Coachwork: BlueBird
Chassis: TC2000-8 Window
Engine: Cumm ISB/Allison 2000
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Quote:
Originally Posted by PNW_Steve
My '02 Bluebird has a "service brake indicator" that comes on whenever the brakes are applied.
I had the same question and finally found the answer in the operators manual online.
To be clear. Mine also has an "ABS Fault" light and it is red.
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Hate to drag up an old thread, but I have a question about the operators manual for my 2002 BB.
Do you have a link where I can find this manual? Questions to BB have gone unanswered.
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01-30-2020, 07:07 AM
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#19
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Bus Nut
Join Date: Jun 2018
Location: Claremont, NH
Posts: 482
Year: 2003
Coachwork: Bluebird
Chassis: International 3800
Engine: DT466E (195hp, 520tq)
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We picked up an operator's manual for our bus from the truck shop that does the work on the local school buses. They scrap out the buses when they go out of service so we've picked up some extra parts from them as well.
__________________
Dave
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