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Antitheft and Alarm Systems: Description and Operation




Anti-Theft

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The Passive Anti-Theft System (PATS) consists of the following components:

- Anti-theft indicator (located in the Instrument Cluster (IC))

- Encoded ignition Integrated Keyhead Transmitter (IKT) PATS (Passive Anti-Theft System) key(s) (the key contains a transponder and a Remote Keyless Entry (RKE) transmitter)

- Encoded (the key contains a transponder) ignition PATS (Passive Anti-Theft System) keys (not factory-equipped, but can be used in place of IKT (Integrated Keyhead Transmitter) keys)

- PATS (Passive Anti-Theft System) transceiver

- IC (Instrument Cluster)

- Transmission Control Module (TCM)

PATS (Passive Anti-Theft System) uses radio frequency identification technology to deter a drive-away theft. Passive means that it does not require any activity by the user.

The vehicle is equipped with 2 IKT (Integrated Keyhead Transmitter) PATS (Passive Anti-Theft System) keys. The IKTs (Integrated Keyhead Transmitters) operate as a standard PATS (Passive Anti-Theft System) key with an RKE (Remote Keyless Entry) transmitter incorporated into the keyhead. The IKTs (Integrated Keyhead Transmitters) require batteries for the RKE (Remote Keyless Entry) transmitter to operate. A maximum of 4 IKT (Integrated Keyhead Transmitter) keys can be programmed to operate the vehicle. If more than 4 IKT (Integrated Keyhead Transmitter) keys are programmed, the RKE (Remote Keyless Entry) portion of the additional keys do not operate and the SJB (Smart Junction Box) (and the IC (Instrument Cluster)) sets a memory full DTC B1138. These additional keys start the vehicle, but do not operate the RKE (Remote Keyless Entry) system. If additional PATS (Passive Anti-Theft System) keys are desired, a standard PATS (Passive Anti-Theft System) key (a non-IKT (Integrated Keyhead Transmitter) key) can be used. For the purposes, the PATS (Passive Anti-Theft System) portion of the IKT (Integrated Keyhead Transmitter) key is referred to as a PATS (Passive Anti-Theft System) key.

Passive Anti-Theft System (PATS) Function

NOTE: If the IC (Instrument Cluster) or the TCM (Transmission Control Module) (or both) is replaced, the parameters must be reset in both modules or the vehicle experiences a PATS (Passive Anti-Theft System) no-start. Refer to Passive Anti-Theft System (PATS) Parameter Reset .

NOTE: When using the Integrated Diagnostic System (IDS), the IC (Instrument Cluster) and the TCM (Transmission Control Module) parameters are reset at the same time.

The PATS (Passive Anti-Theft System) function is controlled by the IC (Instrument Cluster). The IC (Instrument Cluster) is used to carry out all of the PATS (Passive Anti-Theft System) functions such as receiving the identification code from the PATS (Passive Anti-Theft System) key, controlling the Electronically Controlled Continuously Variable Transmission (eCVT) and initiating the key interrogation sequence when the ignition key is turned to the ON or START position. If any of the components are not working correctly, the vehicle does not start. If the IC (Instrument Cluster) must be replaced for any reason (PATS (Passive Anti-Theft System) concerns or IC (Instrument Cluster) concerns), the PATS (Passive Anti-Theft System) keys must be programmed into the new IC (Instrument Cluster). Refer to Integrated Keyhead Transmitter (IKT) Key Programming Using Diagnostic Equipment .

PATS (Passive Anti-Theft System) is active only for a few seconds when the vehicle is starting. It is not a PATS (Passive Anti-Theft System) concern if the vehicle stalls after it has been running for a minimum of 3 seconds. PATS (Passive Anti-Theft System) does not disable a running vehicle or cause a running vehicle to stall.

PATS (Passive Anti-Theft System) can cause a vehicle no start due to the TCM (Transmission Control Module) not cranking the engine or allowing electric drive. Always check for PATS (Passive Anti-Theft System) DTCs from the IC (Instrument Cluster) and the TCM (Transmission Control Module) when a no-crank or no-start condition exists. If the anti-theft indicator does not prove out (it may be either flashing or glowing steadily), it can be due to a PATS (Passive Anti-Theft System) concern. If the anti-theft indicator proves out, it cannot be a PATS (Passive Anti-Theft System) concern. If the anti-theft indicator does not illuminate at all, it can be an IC (Instrument Cluster) concern. Refer to Symptom Chart Anti-Theft - Passive Anti-Theft System (PATS).

The PATS (Passive Anti-Theft System) function uses the IC (Instrument Cluster) and the TCM (Transmission Control Module) to enable or disable the vehicle. All elements of PATS (Passive Anti-Theft System) must be functional before the vehicle is allowed to operate. If any of the components are not working correctly, the vehicle does not operate. If there is a PATS (Passive Anti-Theft System) concern present, the IC (Instrument Cluster) sends a message to the TCM (Transmission Control Module) to not operate the vehicle. If the vehicle starts and stalls, or the engine does not start at all, check the anti-theft indicator operation and if flashing or glowing, retrieve DTCs from the IC (Instrument Cluster) and the PCM and follow the PATS (Passive Anti-Theft System) diagnostics.

PATS (Passive Anti-Theft System) is not compatible with non-Ford aftermarket remote start systems, which allow the vehicle to be started from the exterior of the vehicle. These systems can reduce the security of the vehicle, and can also cause no-start concerns. Remote start systems must be removed from the vehicle before any PATS (Passive Anti-Theft System) -related no-start concerns are investigated.

PATS (Passive Anti-Theft System) disables the vehicle from starting if there is:

- a damaged PATS (Passive Anti-Theft System) key.

- an unprogrammed PATS (Passive Anti-Theft System) key.

- a non-encoded key (a conventional key or one that does not have any electronics).

- damaged wiring.

- a damaged transceiver.

- a damaged IC (Instrument Cluster).

- a damaged TCM (Transmission Control Module).

- IC (Instrument Cluster) and TCM (Transmission Control Module) parameters mismatched.

Factory Invoiced Accessory (FIA) Remote Starter

Vehicles may be equipped with a dealer-installed factory-invoiced remote start system that is a Factory Invoiced Accessory (FIA). The remote start fob for this system uses a small device that is about half the size of a conventional RKE (Remote Keyless Entry) fob, but only has one button on it. If the remote start system is installed on the vehicle and the unlimited mode is not enabled, the PATS (Passive Anti-Theft System) allows up to 7 PATS (Passive Anti-Theft System) keys to be programmed into the IC (Instrument Cluster). The remote start system uses up 1 of the 8 total PATS (Passive Anti-Theft System) keys that can be programmed into the IC (Instrument Cluster). The number of keys that are programmed into the PATS (Passive Anti-Theft System) can be determined by viewing the IC (Instrument Cluster) PID N_KEYCODE.

MyKey(TM) Feature

The MyKey(TM) feature allows a restricted driving mode to be programmed into one (or more) key(s) supplied with the vehicle or into any (PATS (Passive Anti-Theft System)) programmed spare key(s) to promote good driving habits. The MyKey(TM) is a restricted key for all consecutive key cycles until the MyKey(TM) restricted key is disabled. The remaining key(s) is referred to as an "administrator key" or admin key. There must always be at least one admin key. The IC (Instrument Cluster) does not allow the last admin key to be programmed into a MyKey(TM) restricted key. Both the admin key and the MyKey(TM) can be used to see how many MyKeys(TM) and admin keys are programmed to the vehicle, and how many total miles have been driven with the MyKey(TM) restricted key active. When the MyKey(TM) feature is programmed, several features are modified.

Standard Restricted Features

- NOTE: The standard restricted features below cannot be configured in any way.
Belt-Minder(R) chimes periodically with the audio system muted until the driver safety belt is buckled. If Belt-Minder(R) has been disabled when the admin key is in the ignition lock cylinder, Belt-Minder(R) still functions for the MyKey(TM) driver. Belt-Minder(R) cannot be disabled by the MyKey(TM) driver.


- Audible and visual low fuel warnings are issued when the programmed Distance To Empty (DTE) value is reached (typically 75 miles).

Optional Restricted Features

- NOTE: The optional restricted features below can be configured to the customer preferences.
The volume of the audio system can be programmed to limit the volume to 45% of maximum volume.


- Vehicle speed can be programmed to be limited to 130 km/h (80 mph). Audible and visual warnings are issued when the vehicle speed of 130 km/h (80 mph) is attained.

- Audible and visual warnings are issued when the preselected vehicle speed of 75, 90 or 105 km/h (45, 55 or 65 mph) is attained.

- The AdvanceTrac(R) always on feature can be configured on or off. If configured to always on, at this time the traction control cannot be disabled by the MyKey(TM) driver.

If the vehicle is equipped with a Ford approved remote start system and the remote start system was used to start the vehicle, the remote start system causes the vehicle to stall if a door is opened or the vehicle is shifted into gear. At this time, an ignition key must be inserted into the ignition lock cylinder and cycled to the ON position in order for the vehicle to be driven. The vehicle cannot be driven after a remote start has occurred unless a key is inserted into the ignition lock cylinder and turned to the ON position.

A remote start system (if equipped) must be a Ford approved remote start system or issues with the MyKey(TM) feature may occur.

The remote start system decreases the number of keys that can be programmed to the vehicle by one keycode.

The MyKey(TM) feature does not function if the unlimited key mode is turned on.

Refer to Information and Message Center in the Description and Operation portion of Instrument Panel, Gauges and Warning Indicators for MyKey(TM) system checks and system warning displays.

Refer to MyKey(R) Programming or to the Owner's Literature for MyKey(TM) programming information.

Unlimited Key Mode

This system contains a feature called unlimited key mode. This feature allows a customer to program more than 8 vehicle keys, if requested. Each vehicle in unlimited key mode is set up with a special unlimited transponder security key code. This allows all the customer vehicles to share the same mechanically cut keys. For an individual customer, any randomly selected security key that has been previously mechanically cut and electronically programmed to the vehicle is acceptable. Refer to Spare Key Programming - Unlimited Key Mode .
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