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GENERAL OPERATION
INTRODUCTION
The FORD PATS systems were introduced on Ford vehicles on 94.5
M.Y. vehicles , and was available from March 1994.
There have been many variations on the original system fitted. This
system has a separate PATS Amplifier, however on subsequent
systems the PATS module was incorporated into the Engine
Management ECU.
SYSTEM OPERATION
The PATS system is a PASSIVE Anti-theft system which requires no
special procedures for the driver to arm or disarm the system. The
system is operated by a transponder fitted within the
ignition key’s body, which communicates with the PATS module igni-
tion transceiver mounted around the lock barrel.
The easy method of identifying a PATS vehicle is if the key has a
small imprint showing where the transponder is fitted. The code for
the transponder is stored in memory within the PATS
amplifier or the Engine Management ECU.
The PATS system reads the code when the ignition key is turned
from position 0 to position 1. If the correct code is received then the
engine will start.
When vehicles are fitted with Diesel Smart Modules or EPIC, the
PATS code is stored in these systems as well, and requires clearing
when new keys are programmed.
KEY OPERATION - UP TO 98 ¼ MY
Three keys are allocated to each vehicle, the first key which is
inserted is known as the master and is usually identified by it’s RED
colour. The other keys that are used are known as slave keys and
are usually BLACK with a RED insert. Up to 16 keys can be
programmed into the PATS system.
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