Vida CEM swapping

[RickHaleParker]

Shoot I just realize with nothing on the back side, I should be able to use a 90° J1962M connector and still get it to fit in a standard OBDII plug. Looks like JLCPB might not be able to supply the J1962. You would need to source the 90° J1962M and solder it on yourself.

I think I will create a second version with a 90° J1962M .

[ZRimaZ]

I would like to take a look a Girl V1.0.1 ( Guss is Swedish slang for girl. Borrowed from Turkish kız. ).
Can you pack it in a zip file and attach it or host it someplace and provide a link.

Here you go: https://drive.google.com/file/d/1LkhP6V ... sp=sharing

[RickHaleParker]

Here you go: https://drive.google.com/file/d/1LkhP6V ... sp=sharing

It is reading the PIN at Offset 4E000 - 4E005 and applying the transposition cipher ( Shuffle ) decode or encode depending on which you consider to be clear text .

[ZRimaZ]

It is reading the PIN at Offset 4E000 - 4E005 and applying the transposition cipher ( Shuffle ) decode or encode depending on which you consider to be clear text .

Hmm. I know it and you know it already - PIN position we cleared already some time ago... Or am I wrong again?

[RickHaleParker]

PIN position we cleared already some time ago... Or am I wrong again?

Guss is for the CEM-L & CEM-H. VTL posted the addresses and how to do the shuffle way back on page 7.

Man that sounds like dancing lessons.

[RickHaleParker]

I think this one is a better. It is designed for a 90° J1962. Ordered one so I can make sure it works and no mistakes. Will know in 2 - 3 weeks.

Gave up on trying to get it to fix the smaller cases. The smaller cases don't have the right dimensions for a 90° J1962.
My new target case is the rectangular case that most USB ELM327 devices use.

[askrobek]

Hello everyone,

I tried to build the cracker, but I'm not a professional electronic. Last time I dealt with uC in my high school > 20 years ago. But I have some basic knowledge.

The device was connected to a car and to a laptop, all from batteries. In the serial window it says:

Reading part number from ECU 0x40 on CAN_LS
CAN_LS ---> ID=000ffffe data=cb 40 b9 f0 00 00 00 00
CAN_LS <--- ID=0131726c data=00 0c 35 52 00 00 00 3f
CAN_LS <--- ID=01e0162a data=40 10 00 60 07 00 99 00
....
CAN_HS <--- ID=11220028 data=03 40 f3 3e 86 00 33 1f
CAN_HS <--- ID=01000020 data=00 00 00 01 b0 04 c0 00
CAN_HS ---> ID=000ffffe data=cb 50 b9 f0 00 00 00 00
Unknown CEM part number 0. Don't know what to do.

and stops. I have the most recent version of the software. I checked all connections and I think they are ok.
I tried key in position 0 and 1.
When the cracker was connected to OBD2 and key in position 1, there was weird knocking in gear shifter (it is automatic 6 speed).

I used Teensy 4.0, and 2 x "Waveshare SN65HVD230". I use 3.3 volt power only, from laptop usb. Is there something obviously wrong I'm doing? Thank you for any help.

Adrian

[RickHaleParker]

wrong I'm doing? Thank you for any help.

Year and model of car.

Post some close up high resolution pictures of you Cracker. Perhaps we can spot some issues with the build.

How is the battery in the car? Measure the voltage drop.

[vtl]

When the cracker was connected to OBD2 and key in position 1, there was weird knocking in gear shifter (it is automatic 6 speed).

I used Teensy 4.0, and 2 x "Waveshare SN65HVD230". I use 3.3 volt power only, from laptop usb. Is there something obviously wrong I'm doing? Thank you for any help.

Clicking solenoids is a sign of some problem in CAN communication. Do you have common ground between Teensy and OBD connector?

Also you can try to disable CEM_PN_AUTODETECT (remove line 14: https://github.com/vtl/volvo-cem-cracke ... er.ino#L14), in a hope your car has 500 and 125 Kbps buses.

[askrobek]

Thanks for all the responses.

It is 2007 S60R. I attached 2 pictures of the cracker.
I will check the battery and try other things after work in the evening.
I do not have the common ground between OBD2 and Teensy. I will try that too. And I will try to comment out the code and let you know in any of these helped.

Thanks!
Adrian