Paper clipped and pulled ABS code 51...

[dafun1]

So the FSM says ABS code 51 detection item is: "Pump motor is locked; Open in pump motor ground" and the trouble area is: "ABS pump motor." I'm sure this has been discussed but I could not find much so what do I have here? I figure the ABS pump motor is part of actuator but what does "locked" actually mean in this case. I think I've found the ground and it looks good from the terminal end but I need to review the wiring in the FSM to make sure. Like has been discussed, I know all the brake lines run through the actuator from the MC so if it is down then my braking can't be optimal. I've had the truck for about 4 months and braking isn't the best, but I figured the vehicle is over 2 tons so that's normal...and yes I have cleaned all the ABS speed sensors...Thanks

 

[landtank]

the ground for that motor is on the left side kick panel. I didn't have the code but did have a voltage drop do to that ground being bad.

 

[dafun1]

Thanks for the info/response landtank. I found the real ground where you and the FSM said it was (I was far from finding it before you said something). I removed some paint and readjusted everything and bolted it back down. I did not test it for voltage because I didn't have the equipment handy. I took it for a quick drive and the ABS light came back on after about 50 ft of driving. I personally think the ABS pump motor is shot and I will need a new actuator. I could be wrong and I will test the ground wire to see. The last owner had a security system installed and the wiring around the ABS ECU and in that left kick panel area looks screwy. I can count at least 4 wires that are not connected right now...not good. I might have to take it to the stealership to get that removed and the wiring connected correctly. The breaks aren't that bad. I'm just OCD enough to want that ABS light off and the code 51 addressed. I was reading about Beno and his complete removal of the ABS system and I might have to follow suit, though I still consider my self a mechanic that is getting bolder by the day to the wife's dismay...

 

[Mrod]

abs on code 51 some help please

 

[baldilocks]

I have a couple abs pumps and could sell you one. Both worked when I removed them.

 

[cobrasteen]

I have a couple abs pumps and could sell you one. Both worked when I removed them.

Those pumps still available? Im in NE FL. 97 LX450

 

[baldilocks]

Those pumps still available? Im in NE FL. 97 LX450

Sorry, both were sold.

 

[cobrasteen]

Sorry, both were sold.

No problem, thanks for the quick reply!