Model S BMS information

[piwhy]

Hello,
I recently bought a "legacy" 2015 TMS 70D to repair. I'm looking for some informations from the BMS and especially the isolation value of the battery pack provided by the bms. But i can't find this information on the different CANbus database available online. I know this value is available on the powertrain canbus but I can't identify on which ID.
Then to facilitate the diagnotic and repair I would to connect directly on the low voltage mx150 connector on the battery pack to get all the bms values. Is there a pinout diagram available for this connector and a canbus database ?
Thanks