That is the daisy-chain between CMUs used for CMU numbering. The wiring colors were listed in one of the previous thread links of my previous post to you along with the board schematics.

i went ahead and drained the pack using the heater while in READY, it went from 5 bars down to 1blinking in about 1h20m. The HV error light came on and i stopped the test. Let it sit for an hour and i was able to drive over to my LVL2 spot. i plugged in and got all the usual sounds of the fan and co...

Take a look at this thread: http://myimiev.com/forum/viewtopic.php?f=23&t=4302&hilit=CMU+board#p39002 Also schematics and the daisy chain wiring colors here: https://www.diyelectriccar.com/forums/showthread.php?p=1039087#post1039087 then there is a fellow in the UK that has decoded all the B...

Does it charge up full to 16 bars, or does charging stop before? i was surprised that a bad cell would charge back up with all the rest of them, but then fall so fast to get the pack out of line. i've got it sitting with about 5 bars showing 20RR, and i take it out for a couple of miles every few da...

Howdy Don, i'm in the exact same boat. i found a silver 2012 premium SE and checked the pack with canion--it was flat top all cells within 5 mV. Only said 40 miles RR, but i thought previous driver had lead foot, etc. Turns out as it is driven there is a bad cell that is laying down, which pulls dow...

Yes that is the MCU fuse that is blown when the blue snubber caps are found cracked or exploded. It should read a direct short when measuring across a good fuse, and it will be infinite resistance when blown. They can be purchased thru a dealer parts department, or an equivalent can be ordered from ...

Those are some great pictures, i was able to zoom in to inspect the usual culprits. All i could find was the 2 cracked snubber capacitors (little blue buttons). This is the common part to fail and can be repaired. There are details from other folks that have done this in the troubleshooting thread, ...

It looks like you are off to a great start with the wiring diagrams and connectors. i can help with tracing of the internal boards if needed. But i would recommend that you get in contact with Dala the Great over in Finland. Daniel has excellent knowledge and skills with the Laef CAN buss. He has a ...

You are right, i was thinking about the frequency of the rectified mains which looks like DC with a 120 Hz ripple. How many miles on your car? if the roads are pot holed or rough then i would say get another fuse and replace it before it breaks. Same if more than 30k miles. If you don't know the pre...

Andrew, i'll let Joe answer about his special charging setup. But that was my early theory before tracing out the OBC. Something sudden has to happen to interrupt the current while in the middle of a charging session to cause the snubber capacitors to blow. Other theories were a failure of the 12V a...