OK that's a bit different scenario to the normal P0B3B faults.
So the cell 19 they identified as low, was it really low?
What was it's voltage measured with a multi meter compared to the others in the block?
The new cell they have put in and balanced to match the others, is it still holding up or has it'/s voltage dropped?
Do the multi meter voltage readings of these cells correlate with the HDS voltage readings.
If the cell in block C has been identified properly and confirmed as always being low, then yes you may need a new C BMS board.
The balancing mosfet on that cell 19 channel may be short circuit causing it to drain the cell all the time or it's just reading incorrectly.
If the BMS is draining the cell you can could get an equivalent SMD mosfet as is on the boards and have steady hands and a fine tip soldering iron it might be worth changing the one for that channel. You have nothing to lose by trying it.
Remember you could configure an A board to be a C board by moving CAN id resistors. So you can use an A or C board.
Remember you can always buy a battery from a Nimh CR-Z or a later Honda Insight G2 and fit it..
Can the early OEM Nimh CR-Z pack fit in and work in a later Lithium Car? We know this works 99% the other way round. OEM Lithium in a Nimh car.. (y) What has prompted me to looks at this it the fact the later Lithium packs are suffering from some BMS board failures. Once they become...
www.crzforum.com
