Good afternoon everyone, New to the forums but not new to cars, electronics or programming. I am a very curious guy. Since i was young i always liked to take thing apart to see how they operate. Now a days it is mostly OCD'ish. Anyway I have been working on a couple of parts from a 19 Portofino but this thread is for the Accelerator pedal position. I had the fortune of being actively denied by Ferrari NA access to techinfo.ferrari.com to look for some wiring diagrams so, as with most "Engineering" minded people that excel at gathering information. That did not stop me and decided to go a step further than Ferrari and look at the physical design of the APP. Upon removing the module from the APP. I discovered that the newer APP use a non-contact position sensor that is programmed for a specific output based on a magnet position. The design is by Bitron.... they supply of designa and parts to FCA for lots of their cars. on to the details... The silicone is an AMS AS5262 a 12 bit hall based position sensor It has 16 pins AS5262 | ams Using this plus the block diagrams and CPU pins, I was able to id the power pins and the ground pins on the silicone and then reverse trace that from the block schematic to the actual board. Image Unavailable, Please Login Image Unavailable, Please Login With this information, the following is what i discovered. TP1 is closest to the pedal and TP6 is closest to the floor. Pins Use 1 (TP1) 5v B In 2 (TP2) 5v A In 3 (TP3) Signal Position Out 1 (Analog out) 4 (TP4) Ground A 5 (TP5) Ground B 6 (TP6) Signal Position Out 2 (Analog Out) I tested this and the output work correctly. Also of interest. The connector type used is as follows; Manufacture: TE MFG Part #: 1473284-1 Key: Neutral Receptacle: 962876-2 The most interesting of note, The circuit board cannot be changed between say a Fiat 500x APP and a Portofino APP as the sensor MUST be programmed to read the magnetic fields. Yes i tried and it was off by 7 degrees which failed to give a proper output.
hopefully in a good way. Lol. I was noticing with the very limited prancing pony diagrams i do have, they do not go to circuit level schematics or even, at the bare minimum... block level diagramming. Funny enough I just did the same bit of trickery with an NVO module The one I cannot do as that requires braking it apart completely is the NAS (Steering angle sensor).
