I am unable to get any life out of mine either.powercontrol wrote: ↑Fri Jul 21, 2023 6:29 am Hello Royboy, any luck by checking my EB11 wiring sheet?
At least looking at the Ioniq 5 "BMU extension connector" external wires, my pin 13 is brown, and my 11 is brown and 10 is yellow (10 and 11 twisted together). According to the Hyundai docs, the BMU has 4 connectors, two with 24 pins, two with 20.
Looking from the outside, at the back of the BMS extension connector, the pins are 180 degrees opposite your diagram for the Ioniq 5. At least I think so anyway. I connected the pins in the list above, as well as all black wires to ground (also tied the battery chassis to battery ground), and tried different bus speeds, with and without termination, but don't get CAN traffic. I also tried all the other twisted pairs of wires coming out the connector just in case too.projectgus wrote: ↑Tue Sep 13, 2022 5:04 am the pinout (Kona connector number EB11) is:
EDIT: ASCII art seems to only work in some browsers, so here's a screenshot of the ASCII art!Code: Select all
|---------------| /---------------------------------------\ | 11 10 | 9 8 * * 5 4 3 | 2 1 | | | -------- -------- | | | * 21 | * * * * * * 14 | 13 12 | | | -------- -------- | | | 33 * | 31 30 29 28 27 26 * | * * | \---------------------------------------/
ascii_art_plug.png
(This might be mirrored left-to-right for you, I wrote it down based on the harness connector. My car is still mostly intact so I haven't verified it.)
Here are my (unverified) notes on the external connector pinout:
Inside the battery pack, most of these connections run directly from this external connector to the main BMU module connector.
- 1 & 2 - Memory Power 12V (powered all times, 15A BMS fuse)
- 12 - "IG3" relay power 12V (on when vehicle is "on", 10A fuse)
- 10 & 11 - P-CAN High & Low (powertrain CAN, main control channel for BMS)
BTW, if you're in EU or some other places then you can pay 15 Euro to Hyundai Global Service Way then you can access the exact schematic diagrams, connector pinouts, etc for the Ioniq including schematics for inside the battery pack. The above is from notes I took while looking there.
I am in the US and signed up for https://www.hyundaitechinfo.com/default.aspx ($40 for a week) and cannot find a schematic or pinout for this connector ( they refer to it as the "BMU extension connector" ), only the connectors on the internal BMS. My next step is to open the battery and trace those out the the external connector.