Go Back   DODGE RAM FORUM - Dodge Truck Forums > Dodge Ram Generations Forum > 2nd Gen : 1994 - 2002 > Audio & Electronics


Audio & Electronics

Problem with abs


This is a discussion on Problem with abs within the Audio & Electronics forums, part of the 2nd Gen : 1994 - 2002 category!
Its possible, but I cannot find the spec for that in the factory service manual. What i'd do, is take ...


Reply
 
LinkBack Thread Tools Display Modes
Old 01-03-2017, 02:47 PM   #11 (permalink)
Senior Member
 
Join Date: Feb 2016
Location: Lansing, Michigan
Age: 21
Posts: 998

Ram Year: 2001 1500 Sport with enough electrical modifications to make your head spin
Engine: Magnum 360
Default
Its possible, but I cannot find the spec for that in the factory service manual. What i'd do, is take it somewhere with low traction, and slam the brakes to see if the fronts lockup. If they do, its very possible that the fronts are bad.

However, the ABS sensors are simply copper wire wrapped around an iron core. What that test is supposed to detect is whether or not the sensor has shorted or become open. I'm not so sure about the RAM sensors, but most GM sensors are considered good if they fall within 800-1800ohms. What I would do is check the sensors themselves and make sure they are clean and free of damage.

Where you measured will also have an impact, you should measure as close to the ABS module as possible as the wire leading up to it will add to the resistance.


Sponsored Ad
Register to remove this ad.
dudeman2009 is online now   Reply With Quote
Old 01-03-2017, 03:03 PM   #12 (permalink)
Junior Member
 
Join Date: Dec 2016
Location: Italy (Reggio Calabria)
Age: 19
Posts: 13

Ram Year: 1999
Engine: 8.0L Magnum V10
Default
I checked the front sensor in the wheels and are perfect.
I measured the front sensors resistance in the ABS control module connector.
the ABS and parking lights come on just release the brake pedal,
exactly when the pins 5 and 6 are combined.
PIN 5 Brake lamp switch output
PIN 6 Fused B(+)
RamV10- is offline   Reply With Quote
Old 01-03-2017, 04:38 PM   #13 (permalink)
Senior Member
 
Join Date: Feb 2016
Location: Lansing, Michigan
Age: 21
Posts: 998

Ram Year: 2001 1500 Sport with enough electrical modifications to make your head spin
Engine: Magnum 360
Default
Pins 5 and 6 should make contact only when the pedal is depressed, when the plunger is allowed to extend. When the pedal is allowed to return to its resting position, and the plunger is retracted, those pins should not make contact.

If they are making contact when the pedal is at a resting state, the switch should be replaced.

The pedal setup is not like in other vehicles, where depressing the brake pedal depresses the brake switch. Its completely the opposite, when you depress the brake pedal, the brake switch is released.

Those two pins, 5 and 6 make no contact with the ABS module or PCM. If what you're saying is the ABS light only comes on when the brake pedal is resting, then you have another problem, especially if cruise and the brake lights work properly.

If you want to test this, remove the brake switch and manually actuate it in your hand, keeping in mind that depressing the plunger is like letting your foot off the brakes.
dudeman2009 is online now   Reply With Quote
Old 01-04-2017, 05:38 AM   #14 (permalink)
Junior Member
 
Join Date: Dec 2016
Location: Italy (Reggio Calabria)
Age: 19
Posts: 13

Ram Year: 1999
Engine: 8.0L Magnum V10
Default
This is my brake switch:
Brake depressed and switch extended
pins 1 and 2 continue
pins 3 and 4 does not continue
pins 5 and 6 does not continue
Brake released and switch retracted
pins 1 and 2 does not continue
pins 3 and 4 continue
pins 5 and 6 continue
If i remove the brake switch the abs and park lights stay off
RamV10- is offline   Reply With Quote
Old 01-04-2017, 02:46 PM   #15 (permalink)
Senior Member
 
Join Date: Feb 2016
Location: Lansing, Michigan
Age: 21
Posts: 998

Ram Year: 2001 1500 Sport with enough electrical modifications to make your head spin
Engine: Magnum 360
Default
Something is wrong then. I'm not sure if the service manual is incorrect, or there is a mistake in what switch is installed in your vehicle.

Pins 5&6 and pins 1&2 should only have continuity when the brake pedal is depressed and plunger extended.

When the pedal is resting only pins 3&4 should have continuity.

I'd try to get a part number and match it up with something online.

Do your brake lights stay on constantly until you actually hit the brakes?
dudeman2009 is online now   Reply With Quote
Old 01-04-2017, 04:42 PM   #16 (permalink)
Junior Member
 
Join Date: Dec 2016
Location: Italy (Reggio Calabria)
Age: 19
Posts: 13

Ram Year: 1999
Engine: 8.0L Magnum V10
Default
Yes
RamV10- is offline   Reply With Quote
Old 01-04-2017, 09:55 PM   #17 (permalink)
Senior Member
 
Join Date: Feb 2016
Location: Lansing, Michigan
Age: 21
Posts: 998

Ram Year: 2001 1500 Sport with enough electrical modifications to make your head spin
Engine: Magnum 360
Default
If your brake lights stay on until you actually hit the brakes, i'd say you have a faulty brake switch, or the wrong part. You can get replacements at autozone for $10-15.

I'd go get one of those and hook it up and test it by hand just to see if it works. If not, as long as you dont scratch it up, you should be able to return it if thats not it, or they gave you the wrong part.
dudeman2009 is online now   Reply With Quote
Old 01-17-2017, 09:11 AM   #18 (permalink)
Junior Member
 
Join Date: Dec 2016
Location: Italy (Reggio Calabria)
Age: 19
Posts: 13

Ram Year: 1999
Engine: 8.0L Magnum V10
Default
Today I received the package from the USA with the new brake lamp switch. I replaced it with the broken one but nothing the abs light is always on just release the pedal
RamV10- is offline   Reply With Quote
Old 04-23-2017, 01:55 PM   #19 (permalink)
Junior Member
 
Join Date: Dec 2016
Location: Italy (Reggio Calabria)
Age: 19
Posts: 13

Ram Year: 1999
Engine: 8.0L Magnum V10
Default
Nobody can help me?
RamV10- is offline   Reply With Quote
Old 04-23-2017, 07:16 PM   #20 (permalink)
Senior Member
 
Join Date: Feb 2016
Location: Lansing, Michigan
Age: 21
Posts: 998

Ram Year: 2001 1500 Sport with enough electrical modifications to make your head spin
Engine: Magnum 360
Default
I'll have to read through everything again, I remember your problem, but not the details.


__________________
I fixed it until it broke.
dudeman2009 is online now   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Transmission Problem or kickdown Linkage Problem? Yoox_II Engine & Performance 10 11-01-2015 02:21 PM
2nd gen problem Austindavis Lifted 1 03-31-2014 06:16 PM
Steering, Little problem turning into big problem Nikolai553 Engine & Performance 8 08-26-2012 12:17 PM
AC Problem Kewl Brez General Discussions 3 02-07-2012 08:05 PM

<




GM Truck Forum
Ford Raptor Forum
Chevy Tahoe Forum
Chevy Cobalt Forum
Chevy Camaro Forum
Toyota FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Ford Expedition Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Cadillac Forum
Cadillac XTS Forum