I removed the battery cable and then I put it back on , now it wants a pin code to re-activate the security system. How do you get that it won't let me go to the main screen until its activated

 

if you purchase the vehicle new it may be located in your owners manual or any of the manuals you have in the glove box. if you don't have that take your registration and drivers licenses to your local honda dealership and they will give you the code and or install it for you as you watch.