How to Rework CarProg S/N CAR001/003/005

This Carprog rework instruction here is for educational purpose. Hope it’s helpful!

Location: /CARPROG

CarProg repair kit:

4x 74HC125M,

4x 22uF capasitors,

1x MCP2515,

4x MC74HCT125M TSSOP-14

Carprog update kit contain:

4x 74HC125 – exchange these IC if carprog hardware test fail (IF CARPROG DOES NOT WORK):

  • on oldest CarProg board (S/N xxxxxxCAR001xxxx):

  • on older CarProg board (S/N xxxxxxCAR003xxxx):

  • on newest CarProg board (S/N xxxxxxCAR005xxxx):

4x 74HC125 TSSOP 14 – exchange these IC if carprog hardware test fail (IF CARPROG DOES NOT WORK):

4x 22uf tantalum capasitors – solder these capasitors to your A1 and A1+ adapters like in photos – very important modification!!!;

1x MCP2515 – if A1 adapter not work by CAN – this IC can be defective;

1x 12.000 MHz resonator – some times broke;

4x 2.2 Om SMD resistors – some times must be exchanged on main CarProg board (in urgent case you can short these resistors)

If your CarProg not work – make test with adapter

A9 first!!! If CarProg hardware test fail – in most cases you just need exchange 4x 74HC125 integrated circuit. Exchange all 4 74HC125 together!!!

Please update your A1 adapter: open A1 solder additional tantalum or electrolytic capasitors – this MOD will solve “comunication lost” problems.

  • A1 before modification:

  • A1 after modification:

or with electrolytic capasitors

Please update your A1+ adapter: open A1+ solder additional tantalum or electrolytic capasitors – more stable OBDII comunication. Also wery important for older CarProg users – change one 1k Ohm resistor and solder 120R Ohm

  • A1+Befere modification:

  • A1+ after modification:

or with electrolytic capasitors

Disclaimer: this is not originated from uobdii.com. it’s a copy from cartechnology.co,uk (THANKS for the contribution.) to share info here is for educational purpose. if you are newbies (not equipped with rich experience of rework), and don’t want to spend a lot with the programmer, my advice is to have a decent carprog clone:

carprog:

http://www.eobdtool.co.uk/wholesale/perfect-carprog-full.html

a1 adapter:

http://www.eobdtool.co.uk/wholesale/a1-cable-for-carprog-full.html