18155 - transmission solenoid power relay

[pwack]

Had another look over the weekend , split the joint that feeds pins 54+55 , identified the F125 feed and rejointed the cables with a new direct fused feed , went for a drive and unfirtunately got the same error , couldnt find the T17m connector yet.

One thing I noted is that the feed from 54+55 must provide power to the TCU as when the feeds to 54+55 are removed the module looses comms to VCDS so I dont thik that is whats being monitored by block 3 , I forgot to split 54 and 55 and put them back on individualy to see if just one was the main feed and one could be the transmision solenoid power relay supply?

Will carry on investigating this week.