2012 Excessive Voltage Battery Alternative

Good night all! I’ve garnered a substantial amount of information from the pages and pages of discussion board posts – hoping I can get some assistance on this subject that I’ve run into.

My brothers 2012 Volt HV battery was beginning to suck (~25 miles of vary max) so we purchased a smashed up 2015 volt to reap the battery from (hoping to get the 2015 vary increase, however blissful if it could simply get again to shut to manufacturing facility vary).

I’ve a elevate in my storage so we had no hassle extracting the donor battery and swapping it into his non-smooshed 2012. All of the connectors went in, all appeared good.

I knew from studying the service guide that I would wish to do the next:

  • Run the coolant bleed process with the GDS2 software program and a VXDiag – that went off with out a hitch took about half-hour.
  • Clear all ‘Secured’ DTCs within the Hybrid Powertrain Management 2 Module – this is the place issues did not go as anticipated (extra on that under)
  • Reset the Hybrid Powertrain module – additionally did not work as anticipated.
  • Carry out a battery capability re-learn – additionally no-go because of the DTC’s that I am unable to get to clear

Listed here are the DTCs which might be left within the module that will not clear (or slightly they arrive again instantly after clearing):

U185B, U185A, U2602 (see connected screenshot from GDS).

This is what I’ve tried:

  • Adopted the service guide to the letter (requires a number of DTC clears with 2 minute automotive restarts in between)
  • Up to date the firmware on the Hybrid Powertrain Management Module 2 utilizing SPS/TIS2Web and cleared DTCs after

To this point nothing has helped. The little or no data on the market on these DTCs means that the HV battery management modules might merely not be working. Regardless that I can see that there’s voltage in GDS I feel they’re merely not speaking.

SO – specialists on the market what else can I strive earlier than I quit and put the outdated battery again in?

Thanks very a lot to your assist!


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