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S90 T8 HVCH(high voltage coolant heater) to CPM (combustion preheater) swap problem
#5
Hi again!
I finally figured it out! Cool All wiring was good. It turned out since my s90 is made for us market it had different spec cem also what was missing some components. I ordered different cem from eu car, made clone of my original cem, put everything back together and woila! Climate relay works! 
Its sooo stupid that engineers are willing to make so many different parts for just saving couple of cents..  Confused
       
   
Left = donor Right = stock

I really hope that someone will get this job done easier when there now is atleast some information here!

Next challenge will be changing high voltage battery from p30 to p34 with new cathode Big Grin
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RE: S90 T8 HVCH(high voltage coolant heater) to CPM (combustion preheater) swap problem - by naxitrall - 01-29-2025, 01:04 AM

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