I would advise U to send your RCM to tighed1 ,,look under TSBs and How-To Articles read it u will see that even members with electronics background
don't have a jij set up to check the relays so as i said before buy a new one send your old one to tighed1 for repair install your new bosch sensors,
then get a spare set for next time those 3 things keep this car moving. jim