Hi There, I appear to have the notorious faulty ECU which powers the cooling fan 24/7 on my 2002 955i Daytona. I believe that my bike does not have a seperate cooling fan relay as the cooling fan ground return is switched by the ECU itself. I am about to remove the ECU and would, ideally, replace the drive transistors/FET'S, myself, if it is possible to open the ECU and if there is sufficient access to the circuit board. Otherwise I am looking to find a replacement ECU and just wanted to know what numbers are important when I look at possible replacements? My ECU has the following numbers: - S1000T3 21655851-7 IND MOD. :B 1090054521 I believe that I may need to use TuneECU to take a copy of my current ECU map and transfer it to the new ECU? Any further comments and assistance will be greatly appreciated. Martin. BMW GSA1250. MV F3 800 CS. Benelli Tornado Tres. Honda CRF450R. Triumph Daytona 955i.
this one is for later daytonas, i believe any 955 ecu of the same type will fit you just need to download the map for your bike TRIUMPH DAYTONA 955i ECU | eBay or this Triumph Sprint 955i 2002-04 CDI Unit ECU | eBay could it be the temp senor on the rad that is buggered so it is giving a signal to be on constantly
