ABS and BRAKE light on.

[RustyRam]

Thanks to all the other posts on this topic I finally solved my ABS and BRAKE light on and no RWAL working. What I did was what I read here, checked and replaced the rear axle tone sensor, checked wires leading to it, checked and cleaned the plug in the drivers side fender well, found vacuum leak under drivers side battery on tube to cruise control servo. I also had a leaking hydro booster replaced it and the master cylinder. No luck, finally downloaded the full service manual and started on all the rest of the plugs and wires checked the CAB and the plugs and wires leading to it, checked the values on all pins in the plugs per the trouble shooting steps in the shop manual. I got tangled up between some of the steps and reading values but did find an open ground on the four pin plug on the RWAL valve, it was the black and pink wire I believe. Just before I was about to pull the big under hood wire bundle apart I found a lone wire stuck under the bundle headed to the drivers side fender where there are masses of ground wires and it was black and pink AND LOOSE. Fixed it screwed it down and FINALLY had ABS and BRAKE light off and ABS working. WOW 6 months of head scratching done. Thanks it works.

 

[Joe Mc]

Thanks for sharing. BTW what year, etc is your truck. Suggestion, so you don't have to answer this (my question) when you post create a signature. Welcome to the TDR