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 .

Condition	Possible Sources	Actions
The alarm system does not activate from an unauthorized entry at the hood	Refer to 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 .
The alarm system does not activate from an unauthorized entry at the liftgate	Liftgate ajar input	DIAGNOSE the incorrect liftgate ajar indication. REFER to: Instrumentation, Message Center and Warning Chimes .
The audible vehicle lock confirmation/panic alarm feature is inoperative	Key-in-ignition warning system concern Door lock system concern Refer to Pinpoint Test	DIAGNOSE an individual button/feature is inoperative from the RKE transmitter. REFER to: Locks, Latches and Entry Systems - Vehicles With: One-Touch Open Driver Window . REFER to: Locks, Latches and Entry Systems - Vehicles With: One-Touch Open and Close Front Windows .
The alarm system does not arm or no turn signal flash confirmation	Refer to Pinpoint Test	GO to Pinpoint Test B
No horn output during alarm activation	Horn output concern	DIAGNOSE the inoperative horn. REFER to: Horn .
False alarm activation	Door ajar input Hood switch input Liftgate ajar input A valid PATS key read was NOT received when the ignition was 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) Second most Recent Alarm Trigger Event (ALARM_2) Third most Recent Alarm Trigger Event (ALARM_3) Fourth most Recent Alarm Trigger Event (ALARM_4) Fifth most Recent Alarm Trigger Event (ALARM_5)