Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSFORD2009FUSION SEL, 3.0 1, FWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1323 (INTERIOR LIGHTING SYSTEM)DIAGNOSTIC TESTSINTERIOR LIGHTINGSYMPTOM CHART

2009 Ford Fusion SEL, 3.0 1, FWD

Symptom Chart

2009 Ford Fusion SEL, 3.0 1, FWDSECTION 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)	Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK .
The courtesy lamps are inoperative	Fuse Wiring, terminals or connectors Interior lamp SJB	Go to Pinpoint Test A .
The courtesy lamps do not turn on with one door open	Wiring, terminals or connectors Door ajar switch Power window motor SJB	Go to Pinpoint Test B .
The courtesy lamps are inoperative - using the dimmer switch	Wiring, terminals or connectors Dimmer switch SJB	Go to Pinpoint Test C .
The courtesy lamps stay on continuously	Wiring, terminals or connectors Door ajar switch Dimmer switch SJB	Go to Pinpoint Test D .
The demand lamps are inoperative	Wiring, terminals or connectors Interior lamp	Go to Pinpoint Test E .
The luggage compartment lamp is inoperative	Wiring, terminals or connectors Luggage compartment lamp Luggage compartment lid ajar switch SJB	Go to Pinpoint Test F .
The luggage compartment lamp stays on continuously	Wiring, terminals or connectors Luggage compartment lid ajar switch SJB	Go to Pinpoint Test G .
The battery saver does not deactivate after timeout	Wiring, terminals or connectors SJB	Go to Pinpoint Test H .
The illuminated entry is inoperative when using the remote keyless entry (RKE) transmitter	RKE system SJB	Using the RKE transmitter, lock and unlock the doors. If the doors lock and unlock correctly, INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. If the doors do not lock and unlock correctly, REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS to continue diagnosis of the RKE system.
The ambient lighting is inoperative	Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	Go to Pinpoint Test I .
An individual ambient light emitting diode (LED) is inoperative/does not operate correctly	LED	INSTALL a new LED assembly following the instructions within the repair kit. TEST the system for normal operation.
The ambient lighting does not operate correctly - does not cycle through all color combinations	Wiring, terminals or connectors Ambient lighting harness Ambient lighting switch Ambient lighting module	Go to Pinpoint Test J .

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.