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

{ 03:16, 13 November 2018 } { 0 comments } { Link }
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-1

kess-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/2018/11/12/how-to-obd-unlock-simos-pcr-2-1-with-kess-v2/

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