ABS symtoms on M923A2

[Doug Roberts]

So my ABS light is staying on now. It was never having this issue until a few months back. When I power up , the solenoids (front and rear) would cycle and the ABS light would shut off perfectly. Then a few months ago , same thing , except the light would come back on. It would continue to stay on throughout the day , and the next day , it would again cycle off on startup and then come back on.

Now the ABS does not cycle off on startup at all. I have ABS spare parts ect , and I've read through some trouble shooting. I thought I'd post these symptoms and see if you guys know what might be the culprit.

 

[wsucougarx]

So you're not getting the audible clicking sounds from the solenoids on initial startup?

 

[Doug Roberts]

I was getting them to cycle on startup , but the light would come back on . Now it's not cycling at all.

 

[Suprman]

Check the 2 fuses under the dash by the steering column. The light will stay on with a stored fault, which can eventually clear itself or a hardware failure like bad ecu. If one of the fuses is blown, if you replace it and it immediately blows again when you turn the trucks power switch on, then it's a bad ecu. I have all the parts for the abs system if you need anything.