Symptom Chart

WARNING: This page is about a different car, the 2009 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 smart junction box (SJB)	Fuse(s) Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK .
All door locks are inoperative	Wiring, terminals or connectors SJB	Go to Pinpoint Test A .
A single door lock is inoperative	Wiring, terminals or connectors Door lock actuator SJB	Go to Pinpoint Test B .
The door locks operate only one way	Wiring, terminals or connectors Door lock control switch SJB	Go to Pinpoint Test C .
All door locks are inoperative from one switch	Wiring, terminals or connectors Door lock control switch	Go to Pinpoint Test D .
The luggage compartment lid release is inoperative/does not operate correctly	Fuse Wiring, terminals or connectors Remote keyless entry (RKE) transmitter Luggage compartment lid release relay Luggage compartment lid release solenoid Vehicle speed signal Bussed electrical center (BEC) SJB	Go to Pinpoint Test G .
The remote keyless entry (RKE) transmitter is inoperative	RKE transmitter battery RKE transmitter RKE transmitter button pressed a substantial amount of times while outside the range of the vehicle RKE transmitter programming SJB	Go to Pinpoint Test H .
An individual button/feature is inoperative from the remote keyless entry (RKE) transmitter	All door locks Horn system Luggage compartment lid latch Turn signals RKE transmitter	Go to Pinpoint Test I .
The remote keyless entry (RKE) transmitter has poor range performance	Aftermarket systems High power devices RKE transmitter RKE transmitter battery Tire pressure monitoring system (TPMS)/RKE antenna TV/radio transmission towers SJB	Go to Pinpoint Test J .
The autolock does not operate correctly	SJB	Go to Pinpoint Test K .
The smart unlock does not operate correctly	SJB	Go to Pinpoint Test L .
The power door unlock inhibit feature is inoperative	Unlock inhibit deactivated SJB	ACTIVATE unlock inhibit. CARRY OUT the Autolock and Horn Chirp Programming . If the concern is still present, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.