Symptom Chart: Anti-Theft - Perimeter

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to DIAGNOSTIC METHODS for information regarding Ford-specific diagnostic practices.

SYMPTOM CHART - ANTI-THEFT

Condition	Possible Sources	Actions
The alarm system does not activate from an unauthorized entry at the hood	Wiring, terminals or connectors Hood switch Body Control Module (BCM)	REFER to Diagnostic Routine A .
The alarm system does not activate from an unauthorized entry at a door or liftgate	Door ajar input	REFER to Diagnostic Routine A .
	Liftgate ajar input	REFER to Diagnostic Routine B .
The alarm system does not arm/no turn signal flash confirmation	Door ajar input Hood ajar input Liftgate ajar input Turn signals Keyless entry keypad concern Remote Keyless Entry (RKE) transmitter concern Body Control Module (BCM)	REFER to Diagnostic Routine C .
No horn output during alarm activation	Horn	REFER to Diagnostic Routine A .
No turn signal flash during alarm activation	Turn signals	REFER to DIAGNOSTIC ROUTINE R .
No courtesy lamp flash during alarm activation	Courtesy lamps	REFER to DIAGNOSTIC ROUTINE F .
False alarm activation	Door ajar input Hood switch input Liftgate ajar input Panic button pressed on an Remote Keyless Entry (RKE) transmitter A valid Passive Anti-Theft System (PATS) key read is NOT received when the ignition is transitioned to RUN	An intermittent fault exists. MONITOR the Body Control Module (BCM) alarm event Parameter Identifications (PIDs) to identify and isolate the cause of the last alarm activation. Most Recent Alarm Trigger Event (ALARM_EVT_1) 2nd Most Recent Alarm Trigger Event (ALARM_EVT_2) 3rd Most Recent Alarm Trigger Event (ALARM_EVT_3) 4th Most Recent Alarm Trigger Event (ALARM_EVT_4)