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13/11/2018

Kess V2 unlocking Simos PCR 2.1 - connection, wiring, tips&guides

Possible to OBD unlock Simos PCR 2.1 with Kess V2 clone?

Look here: all information can be found here to help you unlock PCR 2.1 using Kess v2 china clone.

 

Connection:

 

ECU connection for the bootmode unlocking procedure only!

 

  1. Connect the ECU to the bootloader adapter
  2. Power up the bootloader adapter with a stabilized 12v power supply
  3. Connect the cable 14P600KT02 to the 14P600BTLR adapter
  4. Follow the instructions provided below

 

Wiring diagram:

  1. Solder a wire to the CNF1 pin
  2. Solder the 470 Ohm resistor on the two pads
  3. Solder the 1K resister on the pad

 kess-v2-unlock-PCR2.1-wiring-1kess-v2-unlock-PCR2.1-wiring-2

Test:

Basic info:

Tested and confirmed working by me on 4 ecus /cars

only on Chinese clone not reworked unit: ktag 6.070kess v2 v4.036, ksuite up to 2.15

kess-v2-unlock-PCR2.1-wiring-1

kess-v2-unlock-PCR2.1-wiring-2

Tips and guides of tools for use:

pcr 2.1 need to be as you know unlocked before writing .

On this ecu pcr 2.1, ksuite (kess v2 or ktag) seem to be more stable than fgtech on pcr but work too sometimes: i get error with fgtech on one pcr2.1 but no problem with ksuite . 

 

So if you have both tools , prefer ksuite seem to be more stable & flawlessly and car run ok .

After you get you ecu unlocked in boot mode , with fgtech just remove boot and left pin connection , and read or write on bench .

On ksuite tools , you can’t read or write with ktag , only unlock . (alientech need to work on it…)
with kess it’s ok , BUT , you can’t use the tricore module !

The problem is that the harness is plugged in the tricore module . so you have to build your own bench cable : just get a obd female plug on a scrapyard , and wire +12 gnd and can h/l (kline is not used but you can wire it it will make a universal bench cable) .

The trick to get communication error free on both fgtech and kess cable is to use a strong external psu .

when the tool id or read or write the ecu , the ecu will perform a kind of reset , and the big cap inside the ecu will go charging , causing a drop in voltage if your psu isn’t strong enough to handle it . THAT WILL CAUSE THE COMM ERROR . That’s the only thing you have to take care . 

when i made test with many little psu (like one you get with your tools) i have seen 7 volts drop some time , so the ecu is shutting down and no comm . 

you can use computer atx psu modded to work on bench (green wire plugged on ground to power on ) i think anything that can provide +12v 2A will be ok . i didn’t need more than 12v just a stable 12V . 14v unstable will not be ok 

that’s why on the car you have no problem , car battery can handle the cap charging current .

There is no immo caused comm error on this ecu , psu is the problem !!

So in conclusion : good psu and obd home made bench cable , remove tricore module on kess = 100% tested bench flashing solution for pcr2.1 .

 

http://blog.obdexpress.co.uk

26/12/2017

Should I have a Kess V2 China clone or EU clone?

Q: How to know my Kess V2 is a China clone or an EU clone? What’s the difference?

 Kess V2 China clone

 

A: It’s simple; just look purple PCB, then you can be 100% sure its build EU clone. China have green or red PCB.

But remember, full reworked green Kess V2from China also works well. And it is low budget clone for start business.

 

Kess v2 EU purple PCB and China green/red PCB can be found here:

It’s a good write-up of Kess V2 PCB.

 

But you have to know- no matter what the colour of the pcb is ist sa pcb

the main thing is good quality parts thats is all thats needed

a china kess/ktag fgtech or any other board if reworked will work exactly as it should

eu made/pcb is a gimmick in most sellers (would like to see proof otherwise)

all the eu boards i have seen have been china made pcb’s some reworked some not even changed but sold as eu made.

the purple eu made kess and ktags can someone proove where in the eu they are made?

poland maybe or germany etc but as i said before makes no diference whatsoever if the parts are good quality then the pcb’s are all the same

they all use the same project to make the pcb’s

 

 

http://www.obdexpress.co.uk/service/galletto-kess-ktag-re...