code u0i21 i lost comunication with abs module the speedometer doesnt work abs and brake light in dash stay on the display in overhead console doesnt work anymore dealer said to replace sensor in differintial did that unhook battery 45 minutes no luck so need help in this matter if any body has any ideas and where i can find a service manual i can ohm and volt the wires as long as i know whitch pin number is and what it needs to measure

 

Welcome to the Forum !

Check the fuse under the hood, I think its number 30. Its a 15amp mini fuse.

Edit; 7/20 When I installed my Juice with Attitude I used a wired fuse tap to make the connection. In my truck it was fuse #30. The fuse tap needed two mini fuses in it. I figured one would work. I got the U-121 code on the Attitude along with the ABS Light and brake light. Got the second fuse for the fuse tap and it fixed the problem. Also check the underside of the fuse block to be sure the wiring is tight.

Dave

 

I think if the wife says fix it now, that means that you need bigger injectors, twin turbos and a built tranny!!!!

 

This is usually a simple fix. These usually bolt on the top of the rear diff. Cheap part ($20) and 10 minutes. When I had my Ford, I simply cleaned it off (metal shaving) and changed the diff fluid to remedy. The part is a magnet.

 

i changed sensor in diff no help check wires on diff connector also just hate to take to the steeler store so some tech will just put parts on and a 1000 dollar repair for a 20 dollar part thanks for the help sofar and will you talk to wife about the twin turbos i am not having any luck.

 

Shucks, I really thought she would go for that!

 

thanks for all the help i fixed this problem first a wire was broke at the sensor at diff and i pulled the fuse out as the night it faile my air compressor for kelderman air ride relay shorted out. but it was hooked to spare fuse. thanks for the tip on the abs module on spare fuse. what was mother mopar thinking on that? and i had a vss sensor code also p0500 i had to cycle the key to clear that one. after i got abs going . so until we are better paid good luck and be well everybody