Symptom Chart: Anti-Theft - Perimeter

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

Symptom Chart

Condition	Possible Sources	Actions
The alarm system does not activate from an unauthorized entry at the hood	Refer to the Pinpoint Test	GO to Pinpoint Test A
The alarm system does not activate from an unauthorized entry at a door	Door ajar input	DIAGNOSE the courtesy lamps not illuminating when a door is open. REFER to: Interior Lighting - Overview .
The alarm system does not activate from an unauthorized entry at the luggage compartment lid	Luggage compartment lid input	DIAGNOSE the incorrect luggage compartment lid ajar indication. REFER to: Instrumentation, Message Center and Warning Chimes .
The alarm system does not arm or no turn signals flash confirmation	Refer to the Pinpoint Test	GO to Pinpoint Test B
No horn output during alarm activation	Horn output concern	REFER to: Horn .
False alarm activation	Door ajar input Hood switch input Luggage compartment lid ajar input Panic button pressed on a RKE transmitter A valid PATS key read was NOT received when the ignition transitioned to RUN	An intermittent fault exists. MONITOR the BCM alarm event Parameter Identifications (PIDs) to identify and isolate the cause of the last alarm activation. Most Recent Alarm Trigger Event (ALARM_1) 2nd Most Recent Alarm Trigger Event (ALARM_2) 3rd Most Recent Alarm Trigger Event (ALARM_3) 4th Most Recent Alarm Trigger Event (ALARM_4)