PATS(passive anti-theft system) does disable starter AND fuel injectors, also fuel pump
The fuel injectors are the BIG DEAL, there is no work around or by-pass for that, you are dead in the water
Flashing Theft light on the dash means PATS is preventing the start up, for sure
Turn on the key and wait, in 45-60seconds the theft light will start to flash a 2 digit code, 11 to 16
11 Transceiver [transponder coil] not connected, or there is no power to it.
12 Transceiver internal fault.
13 No Key/no PATS key has been used to turn the ignition switch.
14 Incomplete key code received.
15 Invalid key code received.
16 CAN communications error.
Transceiver fault is most common
Transceiver is the ANTENNA round the ignition key slot, it read the PATS key number, fairly easy to replace
Get the CODE first and then go from there
If you don't have a spare PATS key to try(you should ALWAYS have a spare PATS key) then a Mobile Locksmith with Ford software can come to you and cut new key(s) and add them to your PATS with their laptop computer
IF.............you have a code reader that can read "B" Codes, body codes, then these codes are a bit more specific that the 11 to 16
B1213 Less than 2 (or 3 if equipped w/Valet key) keys programmed to the system.
B1232/B2103 Transceiver internal antenna damaged. Replace transceiver.
B1342 ECU is defective (EEPROM in PCM is not working — replace PCM). PATS related when stored in PCM only.
B1600 Non-PATS Key or damaged key.
B1601 Unprogrammed encoded ignition key detected (leave ignition on for 20 seconds before trying a programmed key, in Anti-Scan Mode).
B1602 Partial detection of encoded ignition key.
B1681 Transceiver signal not detected.
B2141 Non-Volatile Memory (NVM) configuration failure — No PCM ID stored in PATS.
B2139/U2510 PCM ID does not match between the PCM and PATS control(PATS/ICM/VIC/HEC/SCIL).
B2431 Key program failure (defective key or transceiver).