LMTV Abs troubleshooting

[Suprman]

Alot of the used ones on ebay are base maintenance take out that went in the scrap bin and were picked out by someone at the scrap yard

 

[GeneralDisorder]

Alot of the used ones on ebay are base maintenance take out that went in the scrap bin and were picked out by someone at the scrap yard

Yep. And some will probably work because those guys throw parts at problems constantly. Still definitely a gamble.

 

[aw113sgte]

Yep. And some will probably work because those guys throw parts at problems constantly. Still definitely a gamble.

Got a perfectly working CTIS controller for $39 that way, not all can be winners though.

 

[aw113sgte]

Turns out the ABS ECU was the problem. New one tested and working as it should.

 

[GeneralDisorder]

Turns out the ABS ECU was the problem. New one tested and working as it should.


View attachment 912778

Interesting - I wonder if the ABS ECU was the culprit for burning up the J1939 resistors.

 

[aw113sgte]

Interesting - I wonder if the ABS ECU was the culprit for burning up the J1939 resistors.

That was someone else's. Mine had abs light on with no codes, weird reading for battery voltage, and wouldn't respond to modulator tests. Looked like a small amount of water got in a messed things up.

 

[MatthewWBailey]

Glad I found this thread. I'm diving into my abs soon as it clearly doesn't work. I can lock the rear tires easily in the driveway on ice, no abs light no nothing.

 

[aw113sgte]

Glad I found this thread. I'm diving into my abs soon as it clearly doesn't work. I can lock the rear tires easily in the driveway on ice, no abs light no nothing.

Check the fuses first, they love to pull them. On mine at least, the abs light is default on and the abs computer has to turn it off.

 

[MatthewWBailey]

Check the fuses first, they love to pull them. On mine at least, the abs light is default on and the abs computer has to turn it off.

Ok cool. I know there are 2 breakers missing in the PDP last time I had it open. I didn't research them at the time.

Looking at my photos, CB82 is missing, which runs the K17 relay. I bought a surplus pdp for the spare beakers. So I'll try one in there.