Hi... I downloaded that manual, and I've 'tried' to read and understand that section 8Q on security, but I might as well be reading in Chinese. I'm okay on normal 12VDC wiring and such, but THIS is way out of my scope of skills. I don't even understand what they're telling me to do as a test, let alone "understand" this system. So, if you guys can't help me figure out why upon replacing the large module in the trunk well did NOT restore my vacuum locking system, or interior lighting (but DID restore my headlamp delay function) then I will have to take this vehicle to a dealer (God help me!). I'm not stupid, but also NOT an EE. I've tested the vacuum pumps on BOTH of the modules I have by removing them from their boards and apply in 12VDC and both pumps run fine. This tells me that some "brain" somewhere in this ridiculous system is NOT sending current to the vacuum pump when it should... that's about as far as I have been able to get so far and reading this manual did not help at all. Still needing help in Massachusetts... BoB