Dodge/Ram Diesel Tech Discussions on all generations of Cummins Diesel powered Rams plus the new Eco Diesel

Abs and Brake light on

Thread Tools
 
Search this Thread
 
Old Jul 7, 2009 | 10:57 PM
  #1  
jtridgerunner's Avatar
jtridgerunner
Thread Starter
|
Registered User
Joined: Nov 2006
Posts: 21
Likes: 1
From: South
Cool Abs and Brake light on

I've got an '03 Dodge Cummins 2500, manual trans. The brake and Abs light stay on constantly. My speedo works properly, and brakes (including parking brake) preform great on the truck. Brake pads have plenty of pad on them. The truck does have a Bully Dog programmer. Has anyone heard of using the programmer to set new tire sizes can cause these lights to come on? Any ideas on how to turn these lights off?
 
Reply
Old Jul 7, 2009 | 11:45 PM
  #2  
CarGuyOhio's Avatar
CarGuyOhio
Admin formally known as 94rt10ohio
Joined: Apr 2005
Posts: 9,025
Likes: 3
From: Curtice, OH
Default

You do not just want to turn them off. They are on for a reason.

ABS on solid means your ABS is currently inoperable.

Most ABS issues are usually the speed sensors. Basically each ABS wheel has a speed sensor. If the sensor sees your wheel not spinning, but your computer says you are moving the ABS kicks on. An issue can arise if the sensors malfunction, thinking your wheel is not spinning and therefore kicking on your ABS when in fact there is no need for it. Somehow the system can detect this kind of fault and will throw the light and kill the ABS until fixed. I could be wrong but I think it detects by knowing you are not braking, are moving, yet the speed sensor reports a stopped wheel....

Long winded, I know.... So here is a question.... Just prior to your light coming on did you notice your ABS kicking on under normal braking conditions?
 
Reply
Old Jul 8, 2009 | 01:15 PM
  #3  
Cartalk2's Avatar
Cartalk2
Professional
Joined: Dec 2008
Posts: 115
Likes: 0
From: NH
Default

Check all your fuses? Happened to me when towing. Trailer lights shorted and took out fuse. Replaced fuse and ABS back to normal.
 
Reply
Old Jul 8, 2009 | 07:08 PM
  #4  
65StangBoy's Avatar
65StangBoy
Registered User
Joined: Jun 2008
Posts: 8
Likes: 0
From: Glendale, AZ
Default

My '06 did that when I accidentally started the truck with a fuse removed. It was either 30 or 31, can't remember which one. It's labeled as a spare but most definitely is not.
 
Reply
Old Jul 8, 2009 | 09:13 PM
  #5  
Parts/Service's Avatar
Parts/Service
Champion
Joined: Mar 2004
Posts: 2,703
Likes: 2
From: Bremen, GA.
Default

I believe you need a rear wheel speed sensor that is mounted on the top of the rear differential...
 
Reply
Old Jul 9, 2009 | 08:47 PM
  #6  
jtridgerunner's Avatar
jtridgerunner
Thread Starter
|
Registered User
Joined: Nov 2006
Posts: 21
Likes: 1
From: South
Default

Finally made it to a computer to see what you guys thought.
1) Didnt notice ABS not working, will have to check that. Have yet to stomp the brakes hard enough for them to try to lock up.
2) Will check all fuses soon. Never thought about that being a possible cause, but now i could see how it might be.

Is it odd that both the Brake and ABS light is on? I've seen just a ABS light come on, when it has been an ABS problem.
 
Reply
Old Jul 9, 2009 | 09:18 PM
  #7  
jtridgerunner's Avatar
jtridgerunner
Thread Starter
|
Registered User
Joined: Nov 2006
Posts: 21
Likes: 1
From: South
Default

My fuses 30 and 31 are both empty but labeled as spares. Going to fuses in them when i get to the shop and see if that helps.
 
Reply
Old Jul 10, 2009 | 09:31 PM
  #8  
jtridgerunner's Avatar
jtridgerunner
Thread Starter
|
Registered User
Joined: Nov 2006
Posts: 21
Likes: 1
From: South
Talking Update

Found a blown fuse, replaced it and the lights went out. I pull several different trailers, so one of them may have poped the fuse. Am going to keep close tabs on it now and see if i can figure out what blew the fuse. Thanks for the help guys.
 
Reply
Old Jul 10, 2009 | 10:22 PM
  #9  
BrianSudokhoi02's Avatar
BrianSudokhoi02
Veteran
Joined: May 2007
Posts: 477
Likes: 0
From: SE MN
Default

Glad to hear it was a cheap and easy fix.
 
Reply
Old Jul 13, 2009 | 09:04 PM
  #10  
Parts/Service's Avatar
Parts/Service
Champion
Joined: Mar 2004
Posts: 2,703
Likes: 2
From: Bremen, GA.
Default

Glad to see it was an easy fix...
 
Reply



All times are GMT -4. The time now is 07:18 PM.