2007 Accord Keyless Entry Failed
 

New to this forum. I have a 2007 Accord EX Coupe. My keyless remote suddenly stopped working. Worked fine until the other morning and when I went to unlock it, nothing. Changed the battery in the remote (which was fine the day before) and no change . Tried my other remote, nothing. Key works fine in the door and door locks work correctly from inside the car. Seems maybe the remote receiver has failed, possibly? Has anyone had this same issue? I may have to get a factory repair manual to continue troubleshooting. Does anybody on here have a pdf copy I could use?
Thanks for any help in advance, Marty