Ford Workshop Service and Repair Manuals > Fiesta 1996 (08.1995-02.2002) > Mechanical Repairs | 4 Electrical | 419 Electronic Feature Group | 419-01A Anti-Theft - Active | Description and Operation | Diagnosis and Testing | Anti-Theft - Active

Anti-Theft - Active - Vehicles Built From: 01-1999 > < Anti-Theft - Active

Anti-Theft - Active - Anti-Theft - Active—Vehicles Built Up To: 01/1999

Fiesta 1996 (08/1995-02/2002)

Diagnosis and Testing

Refer to Wiring Diagrams Section 419-01A, for schematic and connector information.

Anti-Theft Alarm/Double Locking Self-Diagnostic Mode

The anti-theft alarm/double locking Self-Diagnostic Mode is designed to enable service personnel to trace faults easily.

Inspection and Verification

Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical	Electrical
Door lock cylinder(s)	Fuse(s)
Liftgate lock cylinder	Electrical connector(s)
-	Wiring harness
-	Switch(es)
-	Remote keyless entry (RKE) receiver
-	Anti-theft alarm horn
-	Remote control transmitter
-	Anti-theft alarm and double locking module

Verify the following systems are working correctly:

Central locking.
Turn signals.

If a particular system(s) is not working correctly, refer to the appropriate section of the workshop manual.

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

If the concern is not visually evident, verify the symptom and enter Self-Diagnostic Mode.

Self-Diagnostic Mode

NOTE:The self-diagnostic mode can not be entered if the central locking system is activated.

To enter self-diagnostic mode, make sure the ignition is in the OFF position.

Operate any door ajar switch or the hood switch 6 times within 8 seconds.

Upon entering the self-diagnostic mode the Passive Anti-Theft System (PATS) Light Emitting Diode (LED) will illuminate continuously, the anti-theft alarm horn beeps once and the directional indicators flash once.

Each activation of a door ajar switch or hood switch is indicated by one short horn beep.

The activation of the ignition switch (from position 0 to II) is indicated by one short horn beep

Each activation of a set/reset switch (located on the lock barrel of each front door) is indicated by one short horn beep, if the key is held in the lock/unlock position for a further three seconds the central locking signal (status of the lock/unlock lines) is also indicated by second short horn beep.

If there is no activation of any alarm switch for a period of 20 seconds, the system will exit the self-diagnostic mode (indicated by one short horn beep and a single flash from the directional indicators) and the PATS LED will extinguish.

Service Test Mode Sequences

Self-Diagnostic Mode

Test	Step	Result	Action
-	Entering self-diagnostic mode	Anti-theft alarm horn beeps once and the turn indicators flash once.	If the turn signal lamps do not flash, GO to Pinpoint Test A. .
1	Turn the ignition switch from position 0 to position II	Anti-theft alarm horn beeps once.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test B. .
2	Open each door in turn	Anti-theft alarm horn beeps once per door.	If the anti-theft alarm horn does not beep for a door, GO to Pinpoint Test C. .
3	Depress the hood switch	Anti-theft alarm horn beeps once.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test D. .
4	Insert the key in the driver side door lock and hold it in the lock (set) position	Anti-theft alarm horn beeps twice.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test E. . If the anti-theft alarm horn only beeps once, GO to Pinpoint Test F. .
5	Insert the key in the driver side door lock and hold it in the unlock (reset) position	Anti-theft alarm horn beeps twice.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test G. . If the anti-theft alarm horn only beeps once, GO to Pinpoint Test F. .
6	Insert the key in the passenger side door lock and hold it in the lock (set) position	Anti-theft alarm horn beeps twice.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test H. . If the anti-theft alarm horn only beeps once, GO to Pinpoint Test I. .
7	Insert the key in the passenger side door lock and hold it in the unlock (reset) position	Anti-theft alarm horn beeps twice.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test J. . If the anti-theft alarm horn only beeps once, GO to Pinpoint Test I. .
8	Insert the key in the liftgate lock and operate the anti-theft alarm inhibit switch	Anti-theft alarm horn beeps once.	If the anti-theft alarm horn does not beep, GO to Pinpoint Test K. .

If the concern is still evident after the self-diagnostic mode refer to the Symptom Chart.

Symptom Chart

Symptom	Possible Sources	Action
The alarm system does not arm using the remote transmitter	* Remote trasmitter. * RKE receiver.	* REFER to WDS.
The alarm system does not arm using the remote transmitter	* Anti-theft alarm and double locking module.	* If the central locking is working with the remote transmitter, INSTALL a new anti-theft alarm and double locking module. TEST the system for normal operation.