Fairly sure pin 41 to PCM is a red herring as it's a common return for the downstream O
2 sensor's which you have already isolated, and no connection with fuse 13 feed. Ditto fault codes which would be expected once fuse 13 blows.
I would now be looking at the purge valve and cam solenoids themselves (not their sensors), which ironically was my first suggestion in thread
here. These are fed directly by engine fuse 13, and any one could develop an internal short I guess. The former, although not sure of its location, can easily be isolated by breaking engine loom connector C144 (light green and white/brown wires) so maybe a good starting point.
![[Linked Image]](https://i.imgur.com/3KbWPRP.jpg)
You haven't explained yet the conditions under which fuse 13 is blowing. Is it just after turning on ignition, with engine running or when revved? If the former then it should be easy to check for fuse blowing without essential stuff connected. Multiway connector C58 on engine loom supplies power to everything mentioned above so would be another isolation point.