How to read write eeprom 93c86 by VVDI Prog Xprog UPA Carprog?

This article is available with how to read & write eeprom 93c86 by VVDI Prog, Xprog, UPA, Carprog etc.

 

1.How to read and write eeprom 93c86 using Xhorse VVDI Prog?

read-eeprom-data-with-xhorse-vvdi-prog-01

Remove KESSY module under the steering wheel from vehicle

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Open Kessy module and locate 93C86 EEPROM. Connect vvdi programmer with chip IC 93C86.

read-eeprom-data-with-xhorse-vvdi-prog-03 read-eeprom-data-with-xhorse-vvdi-prog-04 read-eeprom-data-with-xhorse-vvdi-prog-05

 

Open VVDI Prog software

Select 4th Immobilizer->KESSY(2008-)

(*VW Touareg, Phaeton, Porsche Cayenne and Audi A8 from 2004 use Access/Start Authorization (KESSY) system for transponder keys authorization. )

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Read and save KESSY eeprom data

Install KESSY module back to vehicle.

 

2.How to use Carprog to read and write eeprom 93c86?

Try using 12v and also interchange pin 1 and 8.

u need pins 1234 58 no 6

carprog colors to chip pin numbers on 93c76/86 on solder points
pin1 white pin2 yellow pin3 brown pin4 blue pin5 green pin8 gray

pins 5 and 1 are hard points make sure u scuff points good to get good contact it works easy

just cause it reads , doesn’t mean u read the right thing or it was a good read
here are how I did , don’t follow colors follow pins

carprog read 93c86 eeprom-07 carprog read 93c86 eeprom-09 carprog-read-93c86-eeprom-08 carprog-read-93c86-eeprom-10 carprog-read-93c86-eeprom-11 carprog-read-93c86-eeprom-12 carprog-read-93c86-eeprom-13

Tip: carprog always make a backup

 

3.I try to read eeprom 93C86 for alfa spider brera dashboard with upa usb programmer but I have a problem.
Reading is done successfully but the file is blank.

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Solution: take out eeprom from pcb, by unsoldering and resoldering.