damned ABS, battery and Brake lights always on! - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-10-2007
98rang's Avatar
Member
Thread Starter
 
Join Date: Sep 2006
Location: Beavercreek, OH
Posts: 229
damned ABS, battery and Brake lights always on!

Ever since I did the LED install, these lights are always on... I have tried pulling fuses and letting the truck sit for a day w/ the battery disconnected.. no dice. I get NO codes either!

For the battery light, looking at the t/s-ing tree on the ford cd, it points to the alt, the voltage regulator or wiring.

the one that's making me mad is the abs/ brake light! According to the tech manual "The RABS II uses the yellow ABS warning indicator and under some conditions the red BRAKE warning indicator to alert the driver to a system malfunction. Both indicators must be working properly to assist in diagnosis. The steps below must be followed prior to beginning the RABS II diagnostic procedure." Both lights work, its just that no matter what the brake light comes on dimly if I unplug any abs/brake sensor/switch...

Now, If I unplug the parking brake sensor, the light stays on dim... leading me to think it's a wiring issue of sorts... I'm thinking the diode in the system took a dump... but I'm not seeing it as being stocked at any local parts store. There's another diode in the power center under the hood... but I'm not 100% what system it belongs to, so I'm hesitant to just swap it.

Here's the system... Any ideas/suggestions?
Reply With Quote
  #2  
Old 04-11-2007
98rang's Avatar
Member
Thread Starter
 
Join Date: Sep 2006
Location: Beavercreek, OH
Posts: 229
no one?
Reply With Quote
  #3  
Old 04-12-2007
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
If this happened right after the LED install , I'd be checking the polarity of the LED's.Unlike a regular lamp these only conduct current in one direction.You might have gotten one mislabled from the supplier.Try the brake lamp first.Remember LED stands for Light Emitting Diode.
Reply With Quote
  #4  
Old 04-12-2007
98rang's Avatar
Member
Thread Starter
 
Join Date: Sep 2006
Location: Beavercreek, OH
Posts: 229
Quote:
Originally Posted by OTRtech
If this happened right after the LED install , I'd be checking the polarity of the LED's.Unlike a regular lamp these only conduct current in one direction.You might have gotten one mislabled from the supplier.Try the brake lamp first.Remember LED stands for Light Emitting Diode.
The dim brake light issue happened before the LED install, so it's not really related. :(

I know the LED's went in the correct way, as I checked their polarity with my meter.

I'm thinking its the diode in the system shorted out causing my problem..

And I know what LED stands for
Reply With Quote
  #5  
Old 04-13-2007
Member
 
Join Date: Mar 2007
Location: Upstate,NY
Posts: 2,598
Does the brake light go out if you disconnect the fluid level switch? If it does,I might suspect a partial short in the ignition switch wiper.Or maybe some brake fluid got into the level switch.

Last edited by OTRtech; 04-13-2007 at 03:45 AM.
Reply With Quote
  #6  
Old 04-13-2007
98rang's Avatar
Member
Thread Starter
 
Join Date: Sep 2006
Location: Beavercreek, OH
Posts: 229
Quote:
Originally Posted by OTRtech
Does the brake light go out if you disconnect the fluid level switch? If it does,I might suspect a partial short in the ignition switch wiper.Or maybe some brake fluid got into the level switch.
Yeah, I did that too.. No dice. :(
I'll end up looking at it closer this sunday when I have time to mess with it some more.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
ABS light almost always on?? RobertF SOHC - 2.3L & 2.5L Lima Engines 13 01-21-2012 11:04 PM
UUGGHH!! Damned pre-owned. Fonly General Ford Ranger Discussion 2 12-06-2010 10:01 AM
I Freakin Hate My Damned Efan!!!!! Help!!! Fx4wannabe01 General Technical & Electrical 15 04-17-2007 10:07 PM
Damned Windshield Wipers. EdGe_wannabe General Technical & Electrical 7 06-19-2006 08:38 PM
Damned Window. EdGe_wannabe General Technical & Electrical 13 06-18-2006 10:06 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 05:18 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.