CarTechnoloGY
CarProg A1 Cable modification - Printable Version

+- CarTechnoloGY (https://cartechnology.co.uk)
+-- Forum: All About IMMO/ECU , ChiPTuninG , Dashboard , Locksmith , AirbaG , Carradio (https://cartechnology.co.uk/forumdisplay.php?fid=3)
+--- Forum: CHIPTUNING (https://cartechnology.co.uk/forumdisplay.php?fid=12)
+--- Thread: CarProg A1 Cable modification (/showthread.php?tid=46468)

Pages: 1 2

CarProg A1 Cable modification - carsey - 11-02-2019

Hi 
I need some technical advice on a thread about the insides of a A1 cable.

I bought 10.93 and it arrived today, however I get a communication with CAN problem.

I looked inside the cable after looking at a few issues online and a few people seem to recommend checking the resistors and capacitors inside. I had a look at I THINK that there are 2 round the wrong way. 

[Image: Ts460nW.jpg]

I think R1 and C2 are the wrong way round? 

many thanks for any help

Chris

RE: CarProg A1 Cable modification - dil6222 - 11-02-2019

Correct smile switch them and everything should be ok you can tell they are wrong because of the components placement markings smile

RE: CarProg A1 Cable modification - carsey - 12-02-2019

Swapped them over and still get the "Could not receive CAN KWP Frame".

I made a A9 cable up and everything tested ok

My only other option is to put a wire from pin 16 to thenleg of the mosfet/voltage regulator.

Also, does the device have to be externally powered to do any eeprom work? I was trying with the box only powered by USB

Thanks

RE: CarProg A1 Cable modification - Codieren - 12-02-2019

Check her

http://blog.obdii365.com/2017/04/10/repair-carprog-a1-adapter-for-can-bus-communication/

RE: CarProg A1 Cable modification - carsey - 12-02-2019

That’s what I’ve done, swap r1 and c2 over but still get the same issue

RE: CarProg A1 Cable modification - carsey - 12-02-2019

Extra wire to PIn 16 seemed to solve it, as well as external voltage supply.

However, The cable sometimes fails to connect to the ECU for my Astra H Z19DTH. Sometimes it throws the CAN error, sometimes it doesnt find the ECU and sometimes it starts to read until 18% and crashes out.

RE: CarProg A1 Cable modification - vectrac20tsri - 12-02-2019

I used the diagram that lists every component inc the 2 chips and replaced them all minus the mosfet, mine is a v8.21 and already had the wire from pin 16.

I also replaced the 4 chips and a few other component on the main unit using the diagrams floating around, I tried on a astra h z14xep and was able to retrieve the pin code and correct ecu mileage fine.

cost me around £20+ pound from farnell with many left overs but worth it imo.
That was without external power as well.

RE: CarProg A1 Cable modification - carsey - 14-02-2019

They just a pain to solder though. so small components and doing a chip would be hard.

It still tests ok with the A9 adapter

RE: CarProg A1 Cable modification - carsey - 16-02-2019

It just repeats the EEPRPOM lines

[Image: LDEc8Be.jpg]

RE: CarProg A1 Cable modification - vectrac20tsri - 16-02-2019

I used hot air but yeah with just a iron it would be awkward for the chips you would need quickchip or similar.