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.
No communication with the instrument cluster (IC)	Fuse Wiring, terminals or connectors IC	REFER to MODULE COMMUNICATIONS NETWORK article.
All door locks are inoperative	Fuse Wiring, terminals or connectors Luggage compartment lid release solenoid (part of the luggage compartment latch) SJB	Go to Pinpoint Test A .
A single/more than one door lock is inoperative - without memory	Wiring, terminals or connectors Door lock actuator (part of the door latch) SJB	Go to Pinpoint Test B .
A single/more than one door lock is inoperative - with memory	Fuse Wiring, terminals or connectors Door lock actuator (part of the door latch) Luggage compartment lid release solenoid (part of the luggage compartment latch) DDM SJB	Go to Pinpoint Test C .
All door locks are inoperative from one switch - without memory	Wiring, terminals or connectors Door lock control switch	Go to Pinpoint Test D .
All door locks are inoperative from one switch - with memory	Wiring, terminals or connectors Door lock control switch DDM SJB	Go to Pinpoint Test E .
The door lock switches operate only one way - without memory	Wiring, terminals or connectors Door lock control switch SJB	Go to Pinpoint Test F .
The door lock switches operate only one way - with memory	Wiring, terminals or connectors Door lock control switch DDM SJB	Go to Pinpoint Test G .
The luggage compartment lid is inoperative/does not operate correctly	Wiring, terminals or connectors Luggage compartment lid release switch Luggage compartment lid latch SJB	Go to Pinpoint Test I .
The doors do not lock/unlock using the keyless entry keypad	Wiring, terminals or connectors Keyless entry keypad SJB	Go to Pinpoint Test J .
The keyless entry keypad illumination is inoperative/does not operate correctly	Wiring, terminals or connectors Keyless entry keypad SJB	Go to Pinpoint Test K .
The remote keyless entry (RKE) transmitter is inoperative	Integrated key head transmitter (IKT) IKT battery IKT button pressed a substantial amount of times while outside the range of the vehicle IKT programming SJB	Go to Pinpoint Test L .
An individual button/feature is inoperative from the remote keyless entry (RKE) transmitter	Door locks Horn system Luggage compartment lid release Turn signal system IKT	Go to Pinpoint Test M .
The remote keyless entry (RKE) transmitter has poor range performance	IKT IKT battery Aftermarket systems High power devices TV/radio transmission towers SJB	Go to Pinpoint Test N .
The autolock does not operate correctly	Ignition switch Door ajar switches Vehicle speed signal Transmission range (TR) sensor SJB	Go to Pinpoint Test O .
The auto-unlock does not operate correctly	Door ajar switches Ignition switch Vehicle speed signal SJB	Go to Pinpoint Test P .
The smart unlock does not operate correctly	RH front door ajar switch LH front door ajar switch Key-in-ignition switch SJB	Go to Pinpoint Test Q .
The memory seat does not operate correctly using the remote keyless entry (RKE) transmitter	DDM SJB	ACTIVATE the remote memory. REFER to Remote Memory Activation . TEST the system for normal operation. If the remote memory is still inoperative, REFER to SEATING article to diagnose the memory seat.
The remote keyless entry (RKE) two step door unlocking does not operate correctly	Two step door unlocking is disabled	PROGRAM the two step door unlocking. REFER to Stepped Unlock Programming . TEST the system for normal operation.