Symptom Chart

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the Body Control Module B (BCM-B)	Fuse(s) Wiring, terminals or connectors BCM-B	REFER to MODULE COMMUNICATIONS NETWORK .
No communication with the Smart Junction Box (SJB)	Fuse(s) Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK .
The alarm system does not arm/disarm from the driver door lock cylinder	Wiring, terminals or connectors Door disarm switch (part of the door latch) SJB	GO to PINPOINT TEST A .
The alarm system does not activate from an unauthorized entry at the hood	Wiring, terminals or connectors Hood switch SJB	GO to PINPOINT TEST B .
The alarm system does not arm/no turn signal flash confirmation	Door ajar input Hood ajar input Luggage compartment lid ajar input Turn signals Intrusion and inclination sensor RKE transmitter concern SJB	GO to PINPOINT TEST D .
The alarm system does not operate correctly - intrusion and inclination sensing	Fuse Wiring, terminals or connectors Intrusion and inclination sensor BCM-B	GO to PINPOINT TEST E .
No horn output during alarm activation	Horn	REFER to HORN to diagnose the horn.
No turn signal flash during alarm activation	Turn signals	REFER to EXTERIOR LIGHTING to diagnose the turn signals.
False alarm activation	Door ajar input Hood ajar input Luggage compartment lid ajar input Intrusion and inclination sensor input Panic button pressed on an IKT A valid Passive Anti-Theft System (PATS) key read is NOT received when the ignition is turned to RUN	An intermittent fault exists. MONITOR the SJB alarm event PIDs AL_EVT1 through 4 to identify and isolate the cause of the last alarm activations.