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Randall C
Randall C, ASE MasterTechnician
Category: Ford
Satisfied Customers: 12803
Experience:  35 years ASE Master Tech, Diagnostic , Electrical Specialist
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I'm have an ABS light on on a 93 Bronco. I pulled the codes

Customer Question

I'm have an ABS light on on a 93 Bronco. I pulled the codes using the light flash method. It showed a left front output valve. I replaced the ecm thinking that might be it but light is still on. What else could cause it?
Submitted: 1 year ago.
Category: Ford
Expert:  Randall C replied 1 year ago.

Hello, in order to try and help, Engine size? code#? FS Bronco or small Bronco?

Customer: replied 1 year ago.

Full size eith a 5.0 engine. I don't have the code number but I I remember it was the left front output valve.

Expert:  Randall C replied 1 year ago.

well, hard to say, Diagnaostic has to be done, I have include a a couple links, The wiring diagram as well as the pinpoint chart, You have to use both links to see pin numbers and run tests,Yes,, could have been the ECU but the codes will not auto clear until 50 ignition cycles with no ABS cods setting so,, this can take some time for the code to clear. you can do the pin tests at the ECU plug, withouta breakout box

Customer: replied 1 year ago.

When you say ignition cycle, does that mean strating the vehicle 50 times?

Expert:  Randall C replied 1 year ago.

well, sort of, it is more about drive cylces meaning starting engine from cold state, say in am, then come home from work, driving it, then repeat., You can not just cycle the key 50 times.,It has to go through*****cycles

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