Your best source would be to use a 3rd party subscription to a service manual. Subaru's service manual info (the STIS, Subaru Technical Information System) is extremely expensive to access. I used AllDataDIY but like many people who have used it, it can sometimes mockingly be referred to as "SomeData".
"Why would I want to profess my feelings for some 3D girl?" - Tomoya Aki from the anime Saekano