2009 f150 5.4, factory one way remote start stopped working. it will power up the electrical, and honk once like it always has. then instead of cranking the engine, the anti theft light blinks fast. both fobs do the same thing. can start with both keys with no problem. hood switch is good, i’m wondering if it is the interface for the pats? any idea how to test it? and where it may be located? thx. my fobs only have the single button to start the truck, no lock/unlock buttons