2003 dodge ram 1500 5.9 SLT No speedo and ABS and Emergency Brake lights are on.
So far I have replaced the ECM, Fuse box ,FCM. Replace both VSS . Replaced ignition switch. Look at the ABS gear in the rear end and its fine.I have cleaned up all the grounds.
I`m wondering if anyone has had this problem Any help would be greatly appreciated ... Please and Thanks

 

Is there a way to check the ABS box?

 

Yeah, with the trouble codes and the flow charts/pin outs for the ABS system.


Look and see if the wires to the speed sensor got damaged. The tone ring could also be broken. Its inside the read diff.

 

I replaced the ECM, PCM Ignition switch and both VSS. I have checked the ring gear,and the wires to the sensors on the transmission and the 1 in the rear end.I also baught a new ABS code reader and my truck does not post ABS code . I`m lost now. Is there anything else to try?

 

Fuses 6 and 35 in the underhood IPM.


No codes or No communication?

 

OBDll reader says the truck is not set up for ABS communication .
fuses are fine. I replaced the hole fuse box with another 1 and still have the lights on.

 

You have to have more than just a generic OBDII scan tool.


IF, indeed that one you have is supposed to read ABS and it cannot, then you have a communication issue with your ABS module. I would get someone with a good scan tool to verify that is the case.


Running blind gets expensive very fast.

 

It ended up being the plug for the ABS unit. I unplugged it and saw the second pin was corroded . I installed a used ABS unit from a wrecking yard and I still had my ABS light flashing so I took it back to the dealer to flash the new ABS unit to the truck`s ECM. I did that now I`m getting hard codes 82&83.
I have the same tires and did n`t change anything other then the ABS . I think the dealer ship is just wasting my time and money.
Where to start now?
Thanks a lot ........

 

Oh wow, ok. The connector that's right by the fender on the drivers side?


They are prone to corrosion, but I didn't even think to touch on that because we don't get rusty or salty cars in TN. I've seen a couple that were really bad though.




They have to do a "Module Service Replacement" in the ABS scan tool menu. They can't just do Pinion Factor by itself. It won't take on a new module because you have to force it to trade VINs with the PCM. Only "module replacement" choice does that.


But then again, a used one may make more problems that what they fix.