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1999 Ford F150 cranks & no start, theft code 16.

Checked fuses and relays. No spark & fuel pump not running.

Posted by Bruce Smith on

  • Jeff Armer
    Jeff Armer Nov 17, 2022

    Does the theft light flash or come on steady when trying to start the vehicle?

    The control functions are contained in the instrument cluster. This module carries out all of the PATS functions such as receiving the identification code from the encoded ignition key and controlling engine enable. The instrument cluster initiates the key interrogation sequence when the vehicle ignition switch is turned to RUN or START.

    The PATS uses the PCM to enable or disable the engine. The instrument cluster communicates with the PCM over the SCP network in order to enable engine operation. The instrument cluster and the PCM use sophisticated messages in order to prevent a theft. The instrument cluster and the PCM share security data (when first installed together) that makes them a matched pair. After this security data sharing, these modules will not function in other vehicles. The shared PCM ID is remembered even if the battery is disconnected. The instrument cluster also stores the vehicle's key identification code even if the battery is disconnected. There are special diagnostic procedures outlined in this workshop manual that may be carried out if either a new instrument cluster or PCM needs to be installed.

    All elements of PATS must be functional before the engine is allowed to start. If any of the components are not working correctly, the vehicle will not start.

    PATS uses a visual theft indicator. This indicator will prove out for three seconds when the ignition switch is turned to RUN or START under normal operation. If there is a PATS problem, this indicator will either flash rapidly or glow steadily (for more than three seconds) when the ignition switch is turned to RUN or START. PATS also "blips" the theft indicator every two seconds at ignition OFF to act as a visual theft deterrent.

    Sounds to me like you have some other type of problem , never seen a PATS system disable ignition spark ,fuel yes ,spark no. Also disable starter ,but not on that year .

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When an anti-theft module 16 is tripped and the vehicle won't start, the only way to fix it is to reset the system using factory software or a high-end scan tool. You may be able to find a mobile mechanic/locksmith with the software who can come to you, but most likely you will have to get the vehicle to your local dealer.

Posted on Nov 17, 2022

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Anti-theft system has been triggered. It says Ford PATS System is finicky!

https://www.google.com/search?q=1999+Ford+F150+theft+code+16

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Posted on Nov 17, 2022

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sscullys_122.jpg
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