Shuttle Valve replaced and...then...
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Mudding
Joined: Jan 2019
Posts: 217
Likes: 3
From: Mission, BC, Canada
My Mistake. No ABS codes/ability to read ABS on my Autel. I will check with a compatible model and report back.
BTW - I have a feeling that my ABS doesn't work. With stopping suddenly there should be a rapid "tat-tat-tat" like the other ABS systems. I don't think I get this at all.
BTW - I have a feeling that my ABS doesn't work. With stopping suddenly there should be a rapid "tat-tat-tat" like the other ABS systems. I don't think I get this at all.
Three Wheeling
Joined: Jun 2015
Posts: 81
Likes: 5
Hi. am very interested in the comment that a failure in the printed circuit board triggers the 3 amigos. Is there any post reporting such that I can look at ?
Diagnosis of my ABS unit tells me it is doing what it should, connected oscilloscope to each wheel speed sensor (while driving) and the correct and healthy signals are being fed to the compfuser input connector.
Is the ABS control board mated to the serial number of the ECU, in such way that replacing it will not be recognized and cause more trouble if not 'christened' ?
Diagnosis of my ABS unit tells me it is doing what it should, connected oscilloscope to each wheel speed sensor (while driving) and the correct and healthy signals are being fed to the compfuser input connector.
Is the ABS control board mated to the serial number of the ECU, in such way that replacing it will not be recognized and cause more trouble if not 'christened' ?
Well since you replaced the Shuttle Valve Switches you should be good to go unless the internal connection inside the WABCO Unit is failing. Then simply perform Option B and you'll be good to go after that.
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