mid year change in bms harness. Must be connector cost reduction.
my new harness won’t interface to the old relay box harness. see connector difference:
Separated the harness, and split out the stuff for everything other than cell voltage and cell temp monitoring. Taped it all back up. Then swapped over what was left of the older harness with the new.
Half of the green connector takes in some cell and temp signals, where the other half takes in the water temp and current sensor, which are part of the relay harness.
These 6pins where the only pins I needed to swap on the connector. Everything else stays.
On the other side of the bms box the black connector directly across from the green one handles all 3 can lines, power, ignition. This is easily separated from the loom.
Once separated, there will be 2 lines for heater temp that rout to the green connector, and 2 lines that rout to the service disconnect. Service disconnect lines you can ignore as these do not interface to the bms.
now with that all swapped over, the relay box/heater/current sensor loom plugs in with the old connector and I have the lines needed to start testing.
relays and water heater are not controlled via the bms, like arber stated earlier.
The faceplate connector ends where cut off as I’m not using the face plate. so that leaves just 3 Canbus’s, 12v power, ignition signal, 5v fault?
@arber333 do you have anymore photos of pin out from the manual?