Thanks !

Where did these files come from ? It'd be great to see if there is one for the BECM ?

Yeah, this is with the BECM connected on the desk (with just canbus & 12V), so lots unplugged. I am trying to reconnect bits one at a time !

So seems like sending specific UDS data to 0x012 `cansend can0 012#0210010000000000` then I get all of the above errors logged....

@cjdell yeah, that is me in the video (chris)

We're working on Part2 as we speak, perhaps this is a working real-time "dev log"

OK, I made some progress on the BECM hacking front.
Running

caringcaribou uds discovery --autoblacklist 10
Scanning for arbitration IDs to blacklist


results in the following error codes logged:

P0A0A-13 High voltage interlock loop circuit open circuit
P0A9B-12 Positive&negative contactor ...

I've uploaded CAN logs from working iPace (and also the standalone battery) to https://drive.google.com/drive/folders/ ... bO1e_TCcdt

OK rescanning the uds services with caringcaribou now shows additional two services. I read it wrong before.


caringcaribou uds services 0x7e4 0x7ec
Probing service 0xff (255/255): found 10

Supported service 0x10: DIAGNOSTIC_SESSION_CONTROL
Supported service 0x11: ECU_RESET
Supported service 0x14 ...

So I've written some rust to clear/read the error codes from the BECM using PC as a controller.

Manage to read some error messages now. But I still expect more. I think the BECM isn't going into the "operational" mode for some reason.

- Error codes are saved between BECM boots.
- Removing either ...

I am collating the PIDs/error codes from various sources.

Still no wiser about how to enable the contactors

After reading the error codes, the car seems to then read out a big dump from an error code using Report DTC Snapshot Record By DTC Number

TX (0x7e4 0x19 [0x04, datA, datB, datC, 0xff]) with the three bytes datA datB datC being the error code read from the previous message(e.g 0xa 0xe1 0x14 OR 0 0 ...

So I have managed to clear/read the BECM error code using standard UDS;


count DTCs: cansend can0 7e4#0414ffffff000000
can0 7EC [8] 01 54 00 00 00 00 00 00
no errors: can0 7EC [8] 06 59 01 8F 00 00 00 00
1 error: can0 7EC [8] 06 59 01 8F 00 00 01 00


read DTC: cansend can0 7e4 ...

I have a spreadsheet with the BECM connector pinouts mapped (from service manual and existing work online): https://docs.google.com/spreadsheets/d/17EmBsm7eqVYdQGEEauHqlMVK45hghRZNUVGEhLQdNIg/edit?usp=sharing

Still have some work to do with the pinout, but for now it is functional.

So currently I ...

Hi all

I have been trying to re-purpose an iPace 90kWh battery & connect it standalone without the car.

The components which are connected are the BECM, balancer circuit boards & BEM (containing contactors).

I have the BECM connected on the desk (with just canbus & power), with a canbus adaptor ...

Also interested ...