Symptom Chart

WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
All dimmable illumination does not dim	Wiring, terminals or connectors Instrument panel dimmer switch Steering Column Control Module (SCCM)	GO to Pinpoint Test A .
All dimmable non-networked illumination is inoperative	Fuse Wiring, terminals or connectors Body Control Module (BCM)	GO to Pinpoint Test B .
All dimmable non-networked illumination is always on	Wiring, terminals or connectors BCM	GO to Pinpoint Test C .
The steering wheel switch(es) illumination is inoperative	Wiring, terminals or connectors Steering wheel switch(es) Steering wheel harness Clockspring	GO to Pinpoint Test D .
The Audio Control Module (ACM) illumination is inoperative - base AM/FM radio	Wiring, terminals or connectors ACM	GO to Pinpoint Test E .
One or more illumination source is inoperative	Wiring, terminals or connectors Door lock control switch Illuminated switch	GO to Pinpoint Test E .
The window control switch illumination is inoperative	Window control switch	CHECK the operation of the power windows. If the power windows operate correctly, INSTALL a new window control switch. REFER to GLASS, FRAMES AND MECHANISMS . TEST the system for normal operation. If the power windows do not operate correctly, REFER to GLASS, FRAMES AND MECHANISMS .
All network controlled illumination does not dim	Controller Area Network (CAN) concern BCM	CARRY OUT the network test. If the scan tool responds with no communication to any module on the CAN, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the modules on the CAN, INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
The Instrument Panel Cluster (IPC) illumination is inoperative	High Speed Controller Area Network (HS-CAN) IPC	CARRY OUT the network test. If the scan tool responds with no communication with the IPC, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the IPC, INSTALL a new IPC. REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . TEST the system for normal operation.
The HVAC module illumination is inoperative (vehicle with manual climate control)	Medium Speed Controller Area Network (MS-CAN) HVAC module	CARRY OUT the network test. If the scan tool responds with no communication with the HVAC module, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the HVAC module, INSTALL a new HVAC module. REFER to CLIMATE CONTROL . TEST the system for normal operation.
The Front Controls Interface Module (FCIM) illumination is inoperative	MS-CAN FCIM	CARRY OUT the network test. If the scan tool responds with no communication with the FCIM, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the FCIM, INSTALL a new FCIM. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . TEST the system for normal operation.
The Front Display Interface Module (FDIM) illumination is inoperative (vehicles without navigation)	MS-CAN FDIM	CARRY OUT the network test. If the scan tool responds with no communication with the FDIM, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the FDIM, INSTALL a new FDIM. REFER to INFORMATION AND ENTERTAINMENT SYSTEMS . TEST the system for normal operation.
The Trailer Brake Control (TBC) module illumination is inoperative	HS-CAN TBC module	CARRY OUT the network test. If the scan tool responds with no communication with the TBC module, REFER to MODULE COMMUNICATIONS NETWORK . If the scan tool communicates with the TBC module, INSTALL a new TBC module, REFER to TRAILER BRAKE CONTROL (TBC) MODULE . TEST the system for normal operation.