456GT ABS Control unitATE%23100941130043X1 400

456GT - ABS Control unit(ATE#10.0941-1300.4)(3X1 400)
Is there a way to perform an Error code read out of the ABS ECU w/o having an original diagnostic system (like described for the 348). If yes, are the Error codes identical to the 348 codes ?
My ABS warning light turns sometimes on and I have no idea what causes this. It´s randomly and seems to have no relation to brake temperature or rain.
Thanks for you help on this.

As there was no info on the read-out of the ABS system, I had to go to a Ferrari shop. Seems that the 456 is not so common and not a lot info to find about technical issues. But even they were not able to do this. One dealer told me that there is no OBD read out, there is a "warning light blinking code" for diagnostic. The next dealer told me that there is a OBD read out, connected his tester and said that the ABS ECU is faulted. I was lucky to find one at Dennis McCann´s shop. Installed - same failure. I learned that this spending was
Then I found via internet a "Recall Campaign REF. 156 for the ABS Hydraulic Pump Motor" from 1997.
And here we are. The motor is sitting in the front of the car, exposed to all that comes from the road. The motor was corroded and hardly turning. Next step is to install a new bearing and new brushes. One dealer told me that´s not repairable and I have to get a new one for $5928 incl. TAX.
Hope that the small job (bearing & brushes) of about $20 will solve the problem.
Any similar experience on this ?
Any help is welcome.

Not with the 456 but I'd agree any motor can be repaired or rebuilt unless sealed...which this one obviously was not...

True not a lot of 456s out there but as they age we'll learn more...hang in there!

At least the fault code system was correct trying to tell you something...I think there are multiple generations of this...aka OBD1....OBD2...


It was a Federal regulation...

Car is running again. It was the bearing and the brushes of the hydraulic pump motor (material less than 10US$). My confidence in ferrari dealers is drastically "corroded". Anyone needs a new ABS ECU - I got one over here ...
As my car has decided to challenge me - a new failure came up. The passenger seat automatic movement (if you swing the back rest to the front, then the seat should move in upmost front position). Dealers diagnostic: faultet Seat ECU - 1100$US + VAT. This time I was a little more scared about these diagnostics. Changing the ECU from passenger to driver seat - no failure. Therefore it´s not the ECU. As there are a lot of micro switches and even more cables running across the internal seat, no wiring diagram (by the way, does anybody has access to 456 wiring diagrams - would make my life easier) - looks again like try and error for hours. Life is not easy - just driving a Ferrari would be too easy.
In the meantime I love my 308 GTS even more. You can get a lot of help and there are no electronic "gismos" around - much more straight foreward (ok - there is a 20 year time difference ....). For DIY people, and obviously as well for the Ferrari dealership, the pre-gismo century is much more recommended.
Hope that this is somehow entertaining - at least my car does it´s best to keep my busy.

I had wiring problems on an english build race car. We got the builder to email a wiring schematic, and then we enlarged it to 4 feet x 5 feet and mounted it on a piece of plywood. Set it up right next to the car,it saved time reading it and trouble shooting in the car.
Love "the pre-gismo century" comment. I had the same thought the first time I tracked a F430 and the computer tried to drive the car.

Bob, I´ll take care of the plywood - any size - just need something to stick to it.

Car is running again. It was the bearing and the brushes of the hydraulic pump motor (material less than 10US$).

Nice job on getting her running again. What were the part numbers (and supplier!) for the bearing and brushes?

George, I did a "post-gismo century" google search and it sent me to WWW.Ferraripubs.com
Site claims they will supply tech and wiring for all the models listed. $129US I have never used them but it may be a place to start.

Bob, thanks for the hint. I ordered the CD. Let´s see what´s on. This site was as well the source for the recall campaign info about the hydraulic pump motor that I found in the "post-workshop technical updates". (attached). I missed that they as well have wiring diagrams. Keep you posted if I need to buy plywood....<center><table border=1><tr><td>Recall Campaign 156
456A Recall Campaign 156 - ABS Hydraulic Pump.pdf (1665.7 k)</td></tr></table></center>

George, let us know if you get a useful wiring diagram from Ferraripubs. Wonder why a Ferrari shop doesn't read these things when its so easy to download the info.
I read the recall notice. Sounds like the information is all there.
Its amazing what we can do with a web connection and plywood.