Anyone familiar with DTC 18014 Rough Road Spec Engine Torque ABS-ECU Electrical Malfunction
03-12-2004, 04:59 AM
#6
First, I'd check Bentley - seems that 2000ImolaS4 did and it might be...
a wiring problem. I've recently had a problem with my ABS. I thought I had a bad ABS controller - it turns out that I had a bad wire going to the ABS controller.
There are procedures listed in Bentley describing how to check for bad wires be checking resistance between different wires in the ABS constoller harness.
I'm pretty certain that lots of people on here who have been told they have a bad ABS controller might actually not have a bad controller, but bad wiring going to it.
I have NO idea how a wire like mine was broken, they are pretty wel protected, but somehow it broke, Bentley told me how to look for the wire in question, then all I needed to do was run $0.39 worth of wire and it was fixed.
I spoke with a tech at my local dealership who told me that they would have most certainly tried replacing the ABS controller itself (a $1000 part) - then, I'm sure on my dime as I'm out of warranty, I would have continued having a problem and I'm certain no one would have ever told me it was a simple wire that was broken.
I strongly recommend getting your hands on a Bentley manual (especially if you're out of warranty) - enter your code and you will find a list of diagnostic procedures to search for the cause.
The easiest way to determine if you have a bad controller itself is to have a friend with an S4 come over, swap controllers and see if you get the same codes. just a caution though - when you pull the ABS controllers, you need to re-enter soft coding and possible reset the steering angle sensor - an easy procedure - just write down the soft coding before you pull anything - then you need to log in and recode the ABS controller.
Resetting the steering angle sensor also has a procedure, which I have if you need it (just not with me at my office at the moment).
Good luck - again, if you're out of warranty I would NOT just replace a $1000 part without first trying to figure out if you have a bad $0.39 wire.
There are procedures listed in Bentley describing how to check for bad wires be checking resistance between different wires in the ABS constoller harness.
I'm pretty certain that lots of people on here who have been told they have a bad ABS controller might actually not have a bad controller, but bad wiring going to it.
I have NO idea how a wire like mine was broken, they are pretty wel protected, but somehow it broke, Bentley told me how to look for the wire in question, then all I needed to do was run $0.39 worth of wire and it was fixed.
I spoke with a tech at my local dealership who told me that they would have most certainly tried replacing the ABS controller itself (a $1000 part) - then, I'm sure on my dime as I'm out of warranty, I would have continued having a problem and I'm certain no one would have ever told me it was a simple wire that was broken.
I strongly recommend getting your hands on a Bentley manual (especially if you're out of warranty) - enter your code and you will find a list of diagnostic procedures to search for the cause.
The easiest way to determine if you have a bad controller itself is to have a friend with an S4 come over, swap controllers and see if you get the same codes. just a caution though - when you pull the ABS controllers, you need to re-enter soft coding and possible reset the steering angle sensor - an easy procedure - just write down the soft coding before you pull anything - then you need to log in and recode the ABS controller.
Resetting the steering angle sensor also has a procedure, which I have if you need it (just not with me at my office at the moment).
Good luck - again, if you're out of warranty I would NOT just replace a $1000 part without first trying to figure out if you have a bad $0.39 wire.
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03-12-2004, 06:45 AM
#8
I've got a similar situation right now on a friend's car....
Identical DTC in the ECU, and when I can talk to the ABS, it has a similar "rough road" dtc too.
Problem is, I can't communicate with the ABS module. I've had situations like this with other control modules (airbag) and had to repair the "K" wire between the module & the diagnostic connector. In this situation, might be that, or as someone else here said, it could be a wire between the ECU & the ABS module. I haven't figured it out yet, but this sounds like a possible cause.
Problem is, I can't communicate with the ABS module. I've had situations like this with other control modules (airbag) and had to repair the "K" wire between the module & the diagnostic connector. In this situation, might be that, or as someone else here said, it could be a wire between the ECU & the ABS module. I haven't figured it out yet, but this sounds like a possible cause.