ABS PROBLEM!!

Hello y’all. I have 6ABs codes it’s a Cummins IXS ENGINE 2020 kenworth t800, but u scroll through the settings and it says has 6 faults, but I hooked up our scanner that has haldex, wabco, bendix brake program trials. And it isn’t picking anything up for codes I can’t even scan the trucks ABS! Most important when you turn the key, it doesn’t do the click checking. What’s wrong here I did check all the fuses/relays all are good!!

 

maybe those codes are from a past episode, and they were never cleared?

 

Could be but How would one clear them when they spit show up on the laptop?

 

Most often with no Chuff test the ABS module is not awake. If you can’t talk to the module this may be the issue. Start with fuses. Then check powers and grounds to the ABS module.

 

Insite

 

but when none of the abs does the chuff test it wouldn’t be the module would it? Cuz there is 3 on this truck one for each set of wheels.

 

ABS ECU…..

Not modulators.

yes there are 6 modulator valves.

 

Oh duh. Where

Ohhhhh yessss duh huh. Something being weird there.

 

ABS ECU should be bottom center lower of dash.

 

I'd be following Goodysnap's advice. If you can't "see" a module, usually its not powering up or its somehow been disconnected from the datalink.