Sound Quality

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

Condition	Possible Sources	Action
Poor reception - AM/FM	Wiring, terminals, or connectors AM/FM antenna AM/FM antenna cable Charging system Ignition system Audio Front Control Module (ACM)	GO to PINPOINT TEST A .
Continuous seek/scan in AM/FM	No channel found in the selected category AM/FM antenna AM/FM antenna cable ACM	GO to PINPOINT TEST A .
No sound from one or more speakers (not all speakers) - Edge	Wiring, terminals, or connectors Speaker ACM Audio DSP module (Sony® audio)	GO to PINPOINT TEST B .
No sound from one or more speakers (not all speakers) - MKX	Wiring, terminals, or connectors Speaker Audio amplifier (Premium audio) ACM Audio DSP module (THX® audio)	GO to PINPOINT TEST C .
No sound from all speakers	Fuse Wiring, terminals, or connectors Audio amplifier (MKX premium audio) Audio DSP module (Sony® or THX® audio) ACM	GO to PINPOINT TEST D .
The subwoofer is inoperative	Fuse Wiring, terminals, or connectors Subwoofer Audio DSP module (Sony® or THX® audio) ACM (MKX Premium audio)	GO to PINPOINT TEST E .
Poor reception - satellite radio	Obstructions to the antenna line of sight Satellite radio antenna Satellite radio antenna cable ACM	GO to PINPOINT TEST J .
Continuous seek/scan - satellite radio	No channel found in the selected category Obstructions to the antenna line of sight Satellite radio antenna Satellite radio antenna cable ACM	GO to PINPOINT TEST J .
Poor sound quality/no sound while in satellite radio mode - all other functions operate correctly	Satellite radio antenna Satellite radio antenna cable ACM Accessory Protocol Interface Module (APIM)	GO to PINPOINT TEST J .
Poor sound quality or distorted sound from one or more speakers (not all speakers)	Wiring, terminals, or connectors Speaker(s) Loose trim panel fasteners Loose trim panels Loose speaker grille Loose harnesses Loose items in storage areas Loose harness fasteners Loose door and handle lock components Loose component fasteners Watershield bonding and placement Subwoofer enclosure	GO to PINPOINT TEST AK .