Please help. It's my first time have a ford vehicle. After I change the tensioner pulley. Anti theft blinking and now no crank. Anti theft code 1:6, pats no link to computer. Please help.

 

Welcome to the forum

Unhook one battery cable for 15min
Then hook it back up and see if system resets

If you have a volt meter test battery voltage
12.8v = new battery
12.5v = 3 year old battery
12.3v = 5/6 year old battery and time to change it

12.2v or less is a bad battery
Low battery voltage will cause PATS issues