Symptom Chart

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. 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 smart junction box (SJB)	Fuse(s) Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the driver door module (DDM)	Fuse(s) Wiring, terminals or connectors DDM	REFER to MODULE COMMUNICATIONS NETWORK article.
The alarm system does not disarm - from the driver door	Wiring, terminals or connectors Driver door disarm switch (part of the driver door latch) DDM (vehicles with memory feature) SJB	Go to PINPOINT TEST A .
The alarm system does not arm/disarm - using the integrated key head transmitter (IKT) key	IKT key IKT key battery SJB	Go to PINPOINT TEST B .
The alarm system does not arm/disarm - using the keyless entry keypad	Keyless entry keypad SJB	REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS article.
The alarm system does not operate correctly - alarm does not activate with hood ajar/open	Wiring, terminals or connectors Hood switch SJB	Go to PINPOINT TEST C .
The alarm system does not operate correctly - flashers or horn do not cycle during anti-theft activation	Turn signal lamps Horn SJB	Go to PINPOINT TEST D .
The alarm system does not operate correctly - the alarm does not inhibit from the luggage compartment disarm switch	Wiring, terminals or connectors Luggage compartment disarm switch SJB	Go to PINPOINT TEST E .