Reset is akin to self test module, but the Idea is to check the communication bus BETWEEN modules. Depends on your scanner as to terminology. An error in programming one module may not show exactly in that module initially, but will show due to error checking between modules. Does this make sense to you? To go with above post by me- if non factory programming done sometimes somewhere there is a minor error and if we aren't code writers we are at the mercy of the programmers software. But you now have the tools to find it. Once you find it a repair is possible. Factory manual diagnostics is a must or you may miss a key clue. ( a recent one for me was a 2 blink on anti theft light while testing. not really covered anywhere, but gave me the module needing help, all modules passed self tests,programming looked correct without going line by line thru code. Reprogrammed that module to factory). That one took 2 extra hours because I disregarded the 2 blink as a fault. Error codes did show but all tests came back good. Computers suck when everything is done to lowest bidder specs. Go ahead and scan to your hearts content, to gain a little feel for navigating. Back up everything every time. Then you can review them for differences if needed.
