tone ring? abs?

[famousguy_fsas]

so now from my mud trip my bakes still work and stop great but they abs doesnt work. the tires can lovck up without even trying. is it possible i got mud on the tone ring? i know nothing about it except what it does. so is it internal or external? could mud cause this problem? what else could it be that going crazy mudding could have causued?

 

[BroncoJoe19]

In an '86 you should only have rear abs. The sensor for it is mounted on the top of your rear dif. Maybe it is unplugged.

If your fronts are locking up, that's different.

 

[famousguy_fsas]

ok so if its the rear tone ring unplugged. is it easy for me to find? ill check for it tomorrow and see. now if my fronts are locking up. what could that be? everything worked great till my mud adventure. ps i hate mud now

 

[BroncoJoe19]

the rear sensor is VERY easy to find.

are your fronts locking up? probably mud

 

[famousguy_fsas]

i need to double check which ones ae locking up bu ti think they all might be

 

[miesk5]

You're one of a few to have RABS in an 86; see if you have the Sensor on the diff as shown in these pics by broncodell;

http://www.supermotors.net/getfile/518558/...ze/000_0435.jpg

http://www.supermotors.net/getfile/518559/...ze/000_0437.jpg

If you do have RABS, then you can do a Diagnostic Self Test for trouble codes (DTCs) with just a jumper wire w/alligator clips.

RABS Self Test; except 93-96; "...The 90 service manual gives a routine to pull RABS codes. When the light comes on, don't turn the truck off before reading the codes. Put it in park, chock both front & rear of the wheels, note whether the red brake light is lit also, then momentarily ground the test connector. The test connector comes out of a large loom under the dash, coming through the firewall, near the parking brake. On mine there are 2 similar connectors in that area, the correct one has only 1 black wire with an orange tracer running to it, & was hidden on top of the loom. The correct one is hanging down on the bottom right of the pic below. After you've grounded & ungrounded the wire, the yellow abs light starts to flash. Count the flashes. It said to not count the 1st series, because it may start in the middle. The last flash of the series is a long flash. Then it repeats over & over, until you turn the key off. Count all of the short flashes & the long one together (So 4 short & 1 long is code #5). If I remember right, it should be a number between 2 & 15 or so.

by ElKabong

see his Connector Location pic

RABS Diagnosis & (DTCs) ; except 93-96 (click NEXT to View more pages)

Source: by Jem270 at SuperMotors.net