Symptom Chart

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart - Audio System

Condition	Possible Sources	Action
No communication with the audio control module (ACM)	Fuse Wiring, terminals or connectors ACM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the satellite digital audio receiver system (SDARS) module	Fuse Wiring, terminals or connectors SDARS module	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the front display interface module (FDIM)	Fuse Wiring, terminals or connectors FDIM	REFER to MODULE COMMUNICATIONS NETWORK article.
No communication with the front controls interface module (FCIM)	Fuse Wiring, terminals or connectors FCIM	REFER to MODULE COMMUNICATIONS NETWORK article.
The entire audio system is inoperative - all systems except navigation	Communication network concern FCIM ACM	Go to Pinpoint Test R .
Poor reception - AM/FM	Wiring, terminals or connectors Antenna Antenna cable Charging system Ignition system Noise suppression equipment ACM	Go to Pinpoint Test A .
Continuous seek/scan in AM/FM	RDS function setting	VERIFY the RDS/PTY function is set to ALL. REFER to the Owner's Literature. SCAN for a good channel. If a good channel is found, the cause of the concern was that no channel in the selected category was found. The system is OK. If no good channel is found, go to Pinpoint Test A .
	Antenna Antenna cable Noise suppression equipment ACM	Go to Pinpoint Test A .
Poor quality/distorted/no sound from one or more speakers (not all speakers)	Wiring, terminals or connectors Speaker ACM	Go to Pinpoint Test B .
Poor quality/distorted/no sound from all speakers	Wiring, terminals or connectors ACM	Go to Pinpoint Test C .
The subwoofer is inoperative/does not operate correctly - Audiophile	Fuse Wiring, terminals or connectors Subwoofer ACM	Go to Pinpoint Test D .
Loud popping sound when cycling the ignition	Fuse Wiring, terminals or connectors Subwoofer (Audiophile) ACM	Go to Pinpoint Test E .
The steering wheel controls are inoperative/do not operate correctly	Wiring, terminals or connectors Clockspring Steering wheel controls ACM	Go to Pinpoint Test F .
The speed sensitive volume does not operate correctly	Speed sensitive volume setting Vehicle speed sensor (VSS) signal concern ACM	Go to Pinpoint Test G .
The audio input jack is inoperative/does not operate correctly	Wiring, terminals or connectors Audio input jack ACM	Go to Pinpoint Test H .
An individual FCIM button is inoperative/does not operate correctly	FCIM	INSTALL a new FCIM. REFER to Front Controls Interface Module (FCIM) . TEST the system for normal operation.
The FCIM illumination does not operate correctly	Interior lamps system concern FCIM	Go to Pinpoint Test I .
An individual FDIM display is inoperative/does not operate correctly	Interior lamps system concern Climate control system concern Audio system concern Satellite radio system concern FDIM	Go to Pinpoint Test K .
There are 2 vertical lines displayed on the FDIM	Module not configured	NOTE: DTC B2477 should be set. CONFIGURE the FDIM. REFER to Programmable Module Installation (PMI) in MODULE CONFIGURATION article. TEST the system for normal operation.
The FDIM screen is completely inoperative	Fuse Wiring, terminals or connectors FDIM	CARRY OUT the FDIM self-test. If the scan tool cannot communicate with the FDIM, REFER to MODULE COMMUNICATIONS NETWORK article. If the scan tool does communicate with the FDIM, INSTALL a new FDIM. REFER to Front Display Interface Module (FDIM) . TEST the system for normal operation.
The FDIM illumination does not operate correctly	Interior lamps system concern FDIM	Go to Pinpoint Test J .
The satellite audio is inoperative/does not operate correctly	Subscription status Wiring, terminals or connectors SDARS module ACM	Go to Pinpoint Test L .
Poor reception - satellite audio	Obstructions to the line of sight Satellite radio antenna Satellite radio antenna cable SDARS module	Go to Pinpoint Test M .
No sound while in satellite radio mode - display is OK	Satellite radio antenna Satellite radio antenna cable SDARS module ACM	Go to Pinpoint Test M .

Symptom Chart - Navigation

Condition	Possible Sources	Action
No global positioning system (GPS) antenna signal	GPS antenna ACM	Go to Pinpoint Test N .
Navigation screen only displays Dearborn, Michigan	GPS antenna	Go to Pinpoint Test N .
The position cursor is inaccurate	Vehicle speed sensor (VSS) signal concern ACM	Go to Pinpoint Test Q .
The audible switch feedback is inoperative	Audible switch feedback setting ACM	Go to Pinpoint Test O .
Unable to read map disc	Map DVD ACM	REMOVE the map DVD and CLEAN it. INSPECT for scratches, fingerprints, or damage, and REPAIR as necessary. VERIFY a valid map DVD is being used. If no concern is found, INSERT a known good map DVD. TEST the system. If the system operates correctly, the concern was caused by a damaged or inoperable map DVD. If the system does not operate correctly, INSTALL a new ACM. REFER to Audio Control Module (ACM) . TEST the system for normal operation.
The screen does not open/close	Trim panel interference ACM	INSPECT the trim panel for interference with the navigation screen, and REPAIR as necessary. If no interference is found, INSTALL a new ACM. REFER to Audio Control Module (ACM) . TEST the system for normal operation.
The voice guidance is inoperative/does not operate correctly	Voice guidance setting ACM	Go to Pinpoint Test P .
The display screen is inoperative	Wiring, terminals or connectors ACM	VERIFY the operation of the AM/FM audio system. If the AM/FM audio system does not operate correctly, go to Symptom Chart - Audio System . If the AM/FM audio system operates correctly, INSTALL a new ACM. REFER to Audio Control Module (ACM) . TEST the system for normal operation.