Symptom Chart

WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM

Condition	Possible Sources	Action
No communication with the smart junction box (SJB)	Fuse(s) SJB Circuitry	REFER to MULTIFUNCTION ELECTRONIC MODULES .
All door locks are inoperative from one switch	Door lock control switches Circuitry	GO to PINPOINT TEST A .
The luggage compartment lid is inoperative-from the luggage compartment lid release switch and remote keyless entry (RKE) transmitter	Luggage compartment lid release switch Circuitry Luggage compartment lid latch/liftgate latch Smart junction box (SJB)	GO to PINPOINT TEST B .
All door locks are inoperative	Battery junction box (BJB) fuse 1 (80A) Smart junction box (SJB) fuse 3 (25A) SJB Circuitry	GO to PINPOINT TEST C .
A single door lock is inoperative	Door lock actuator Smart junction box (SJB) Circuitry	GO to PINPOINT TEST D .
The doors do not lock/unlock using the remote keyless entry (RKE) keypad	RKE keypad Circuitry Smart junction box (SJB)	GO to PINPOINT TEST E .
The doors do not lock/unlock using the remote keyless entry (RKE) transmitter	RKE transmitter RKE transmitter battery RKE transmitter programming Aftermarket system High power devices TV/radio transmission towers Smart junction box (SJB)	GO to PINPOINT TEST F .
The auto-lock does not operate correctly	Door ajar switches Smart junction box (SJB) Circuitry	GO to PINPOINT TEST G .
The smart lock does not operate correctly	Door ajar switch(es) Key-in-ignition switch Smart junction box (SJB)	GO to PINPOINT TEST H .
The luggage compartment lid is inoperative using the remote keyless entry (RKE) transmitter	RKE transmitter Smart junction box (SJB) Circuitry	GO to PINPOINT TEST I .
The remote keyless entry (RKE) transmitter is out of synchronization	RKE transmitter button pressed substantial amount of times while outside the range of the vehicle RKE transmitter Smart junction box (SJB)	GO to PINPOINT TEST J .
Panic feature is inoperative/does not operate correctly	RKE transmitter Smart junction box (SJB)	GO to PINPOINT TEST K .
The remote keyless entry (RKE) keypad illumination is inoperative	RKE keypad Smart junction box (SJB) Circuitry	GO to PINPOINT TEST L .
The remote keyless entry (RKE) transmitter has poor range performance	Aftermarket system High power devices TV/radio transmission towers RKE transmitter Smart junction box (SJB)	GO to PINPOINT TEST M .